Patent Publication Number: US-2023136210-A1

Title: Electronic device including antenna

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This application is a bypass continuation application of International Application No. PCT/KR2022/015834, filed on Oct. 18, 2022, which is based on and claims priority to Korean Patent Application No. 10-2021-0148240, filed on Nov. 1, 2021, in the Korean Intellectual Property Office, the disclosures of which are incorporated by reference herein in their entireties. 
    
    
     BACKGROUND 
     1. Field 
     The disclosure relates to an electronic device including an antenna. 
     2. Description of Relate Art 
     Next-generation wireless communication technology may transmit and receive wireless signals using a mmWave band (e.g., a frequency band in the range of about 3 GHz to 100 GHz), and an efficient mounting structure and a new antenna structure (e.g., an antenna module) corresponding thereto are being developed in order to increase the gain of the antenna, and address high free-space loss that may be caused due to the frequency characteristics. The antenna structure may include an array antenna in which various numbers of antenna elements (e.g., conductive patches and/or conductive patterns) are disposed at regular intervals. These antenna elements may be disposed inside the electronic device, and may form a beam pattern in any one direction. For example, the antenna structure may be disposed in the inner space of the electronic device and a beam pattern may be formed toward at least a portion of a front surface, a rear surface, and/or a side surface. 
     Profiles of electronic devices are being gradually reduced, and antenna structures in mmWave bands forming beam patterns in different directions may be disposed adjacent to each other in the inner space of the electronic devices. Because the antenna structures in the mmWave bands are disposed adjacent to each other, near-field interference may occur between the antenna structures, which becomes more significant with the reduced profile. 
     SUMMARY 
     Various embodiments of the disclosure provide an electronic device and a method which reduces interference between antenna structures disposed adjacent to each other in the inner space of the electronic device. 
     In accordance with an aspect of the disclosure, an electronic device includes: a first housing including a first support member facing in a first direction, a first rear cover facing in a second direction opposite the first direction, and a first side member surrounding a first space between the first support member and the first rear cover; a second housing including a second support member facing in the first direction, a second rear cover facing in the second direction, and a second side member surrounding a second space between the second support member and the second rear cover; a hinge structure connected to the first housing and the second housing and configured to be folded about a folding axis; a first antenna structure disposed in the first space, and configured to form a first electric field in the second direction so as to pass through the first rear cover; a second antenna structure disposed near the first antenna structure in the first space, and configured to form a second electric field in a third direction perpendicular to the second direction; and a conductive member disposed between the first antenna structure and the second antenna structure. 
     According to one or more embodiments, an electronic device may include a conductive member on the inner surface of a rear cover corresponding to the space between the antenna structures, thereby reducing near-field interference between the antenna structures disposed adjacent to each other. As the near-field interference between the antenna structures is reduced by the conductive member, the transmission power of the antenna structures may be reduced, thereby improving the radiation performance of the antenna structures. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other aspects, features and advantages of certain embodiments of the present disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, in which: 
         FIG.  1    is a block diagram illustrating an electronic device in a network environment according to various embodiments; 
         FIG.  2    is a block diagram of an electronic device supporting legacy network communication and 5G network communication according to various embodiments; 
         FIG.  3 A  is a front perspective view of an electronic device in a flat or unfolded state according to various embodiments; 
         FIG.  3 B  is a plan view illustrating the front of the electronic device in an unfolded state according to various embodiments; 
         FIG.  3 C  is a plan view illustrating the back of the electronic device in an unfolded state according to various embodiments; 
         FIG.  4 A  is a perspective view of the electronic device in a folded state according to various embodiments; 
         FIG.  4 B  is a perspective view of the electronic device in an intermediate state according to various embodiments; 
         FIG.  4 C  is an exploded perspective view of the electronic device according to various embodiments; 
         FIG.  5    is a diagram illustrating an arrangement of a plurality of antenna structures according to various embodiments; 
         FIG.  6 A  is a diagram illustrating a structure of, for example, a third antenna module described with reference to  FIG.  2   , according to various embodiments; 
         FIG.  6 B  is a cross-sectional view illustrating the third antenna module taken along line Y-Y′ of  FIG.  6 A  according to various embodiments; 
         FIG.  7 A  is a diagram illustrating an arrangement of a plurality of antenna structures according to various embodiments; 
         FIG.  7 B  is a partial cross-sectional view of an electronic device taken along line C-C′ in  FIG.  7 A  according to various embodiments; 
         FIG.  7 C  is a diagram illustrating an antenna structure according to various embodiments; 
         FIG.  8    is a diagram illustrating a structure in which a first antenna structure, a second antenna structure, and a conductive member are disposed according to various embodiments; 
         FIG.  9    is a view illustrating a conductive member (e.g., a periodic structure) provided adjacent to a first antenna structure when a first rear cover is viewed from above according to various embodiments; 
         FIG.  10    is a diagram illustrating a conductive member (e.g., a periodic structure) according to various embodiments; 
         FIG.  11    is a partial cross-sectional view of an electronic device taken along line B-B′ in  FIG.  8    according to various embodiments; and 
         FIG.  12    is a diagram comparing radiation patterns according to whether or not a conductive member is formed on an inner surface of a first rear cover corresponding to a space between antenna structures according to various embodiments. 
     
    
    
     DETAILED DESCRIPTION 
       FIG.  1    is a block diagram illustrating an electronic device in a network environment according to various embodiments. 
     Referring to  FIG.  1   , an electronic device  101  in a network environment  100  may communicate with an electronic device  102  via a first network  198  (e.g., a short-range wireless communication network), or at least one of an electronic device  104  or a server  108  via a second network  199  (e.g., a long-range wireless communication network). According to an embodiment, the electronic device  101  may communicate with the electronic device  104  via the server  108 . According to an embodiment, the electronic device  101  may include a processor  120 , memory  130 , an input module  150 , a sound output module  155 , a display module  160 , an audio module  170 , a sensor module  176 , an interface  177 , a connection terminal  178 , a haptic module  179 , a camera module  180 , a power management module  188 , a battery  189 , a communication module  190 , a subscriber identification module (SIM)  196 , or an antenna module  197 . In some embodiments, at least one of the components (e.g., the connection terminal  178 ) may be omitted from the electronic device  101 , or one or more other components may be added in the electronic device  101 . In some embodiments, some of the components (e.g., the sensor module  176 , the camera module  180 , or the antenna module  197 ) may be implemented as a single component (e.g., the display module  160 ). 
     The processor  120  may execute, for example, software (e.g., a program  140 ) to control at least one other component (e.g., a hardware or software component) of the electronic device  101  coupled with the processor  120 , and may perform various data processing or computation. According to one embodiment, as at least part of the data processing or computation, the processor  120  may store a command or data received from another component (e.g., the sensor module  176  or the communication module  190 ) in volatile memory  132 , process the command or the data stored in the volatile memory  132 , and store resulting data in non-volatile memory  134 . According to an embodiment, the processor  120  may include a main processor  121  (e.g., a central processing unit (CPU) or an application processor (AP)), or an auxiliary processor  123  (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operable independently from, or in conjunction with, the main processor  121 . For example, when the electronic device  101  includes the main processor  121  and the auxiliary processor  123 , the auxiliary processor  123  may be adapted to consume less power than the main processor  121 , or to be specific to a specified function. The auxiliary processor  123  may be implemented as separate from, or as part of the main processor  121 . 
     The auxiliary processor  123  may control at least some of functions or states related to at least one component (e.g., the display module  160 , the sensor module  176 , or the communication module  190 ) among the components of the electronic device  101 , instead of the main processor  121  while the main processor  121  is in an inactive (e.g., sleep) state, or together with the main processor  121  while the main processor  121  is in an active state (e.g., executing an application). According to an embodiment, the auxiliary processor  123  (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., the camera module  180  or the communication module  190 ) functionally related to the auxiliary processor  123 . According to an embodiment, the auxiliary processor  123  (e.g., the neural processing unit) may include a hardware structure specified for artificial intelligence model processing. An artificial intelligence model may be generated by machine learning. Such learning may be performed, e.g., by the electronic device  101  where the artificial intelligence is performed or via a separate server (e.g., the server  108 ). Learning algorithms may include, but are not limited to, e.g., supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include a plurality of artificial neural network layers. The artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), deep Q-network or a combination of two or more thereof but is not limited thereto. The artificial intelligence model may, additionally or alternatively, include a software structure other than the hardware structure. 
     The memory  130  may store various data used by at least one component (e.g., the processor  120  or the sensor module  176 ) of the electronic device  101 . The various data may include, for example, software (e.g., the program  140 ) and input data or output data for a command related thereto. The memory  130  may include the volatile memory  132  or the non-volatile memory  134 . The non-volatile memory  134  may include an internal memory  136  and/or an external memory  138 . 
     The program  140  may be stored in the memory  130  as software, and may include, for example, an operating system (OS)  142 , middleware  144 , or an application  146 . 
     The input module  150  may receive a command or data to be used by another component (e.g., the processor  120 ) of the electronic device  101 , from the outside (e.g., a user) of the electronic device  101 . The input module  150  may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen). 
     The sound output module  155  may output sound signals to the outside of the electronic device  101 . The sound output module  155  may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as playing multimedia or playing record. The receiver may be used for receiving incoming calls. According to an embodiment, the receiver may be implemented as separate from, or as part of the speaker. 
     The display module  160  may visually provide information to the outside (e.g., a user) of the electronic device  101 . The display module  160  may include, for example, a display, a hologram device, or a projector and control circuitry to control a corresponding one of the display, hologram device, and projector. According to an embodiment, the display module  160  may include a touch sensor adapted to detect a touch, or a pressure sensor adapted to measure the intensity of force incurred by the touch. 
     The audio module  170  may convert a sound into an electrical signal and vice versa. According to an embodiment, the audio module  170  may obtain the sound via the input module  150 , or output the sound via the sound output module  155  or a headphone of an external electronic device (e.g., an electronic device  102 ) (e.g., speaker or headphone) directly (e.g., wiredly) or wirelessly coupled with the electronic device  101 . 
     The sensor module  176  may detect an operational state (e.g., power or temperature) of the electronic device  101  or an environmental state (e.g., a state of a user) external to the electronic device  101 , and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module  176  may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor. 
     The interface  177  may support one or more specified protocols to be used for the electronic device  101  to be coupled with the external electronic device (e.g., the electronic device  102 ) directly (e.g., through wires) or wirelessly. According to an embodiment, the interface  177  may include, for example, a high-definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface. 
     The connection terminal  178  may include a connector via which the electronic device  101  may be physically connected with the external electronic device (e.g., the electronic device  102 ). According to an embodiment, the connection terminal  178  may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector). 
     The haptic module  179  may convert an electrical signal into a mechanical stimulus (e.g., a vibration or a movement) or electrical stimulus which may be recognized by a user via his tactile sensation or kinesthetic sensation. According to an embodiment, the haptic module  179  may include, for example, a motor, a piezoelectric element, or an electric stimulator. 
     The camera module  180  may capture a still image or moving images. According to an embodiment, the camera module  180  may include one or more lenses, image sensors, image signal processors, or flashes. 
     The power management module  188  may manage power supplied to the electronic device  101 . According to one embodiment, the power management module  188  may be implemented as at least part of, for example, a power management integrated circuit (PMIC). 
     The battery  189  may supply power to at least one component of the electronic device  101 . According to an embodiment, the battery  189  may include, for example, a primary cell which is not rechargeable, a secondary cell which is rechargeable, or a fuel cell. 
     The communication module  190  may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device  101  and the external electronic device (e.g., the electronic device  102 , the electronic device  104 , or the server  108 ) and performing communication via the established communication channel. The communication module  190  may include one or more communication processors that are operable independently from the processor  120  (e.g., an application processor (AP)) and supports a direct (e.g., wired) communication or a wireless communication. According to an embodiment, the communication module  190  may include a wireless communication module  192  (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module  194  (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). A corresponding one of these communication modules may communicate with the external electronic device via the first network  198  (e.g., a short-range communication network, such as Bluetooth™, Wi-Fi direct, or infrared data association (IrDA)) or the second network  199  (e.g., a long-range communication network, such as a legacy cellular network, a fifth generation (5G) network, a next-generation communication network, the Internet, or a computer network (e.g., LAN or wide area network (WAN))). These various types of communication modules may be implemented as a single component (e.g., a single chip), or may be implemented as multi components (e.g., multi chips) separate from each other. The wireless communication module  192  may identify and authenticate the electronic device  101  in a communication network, such as the first network  198  or the second network  199 , using subscriber information (e.g., international mobile subscriber identity (IMSI)) stored in the subscriber identification module  196 . 
     The wireless communication module  192  may support a 5G network, after a 4G network, and next-generation communication technology, e.g., new radio (NR) access technology. The NR access technology may support enhanced mobile broadband (eMBB), massive machine type communications (mMTC), or ultra-reliable and low-latency communications (URLLC). The wireless communication module  192  may support a high-frequency band (e.g., the mmWave band) to achieve, e.g., a high data transmission rate. The wireless communication module  192  may support various technologies for securing performance on a high-frequency band, such as, e.g., beamforming, massive multiple-input and multiple-output (massive MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large-scale antenna. The wireless communication module  192  may support various requirements specified in the electronic device  101 , an external electronic device (e.g., the electronic device  104 ), or a network system (e.g., the second network  199 ). According to an embodiment, the wireless communication module  192  may support a peak data rate (e.g., 20 Gbps or more) for implementing eMBB, loss coverage (e.g., 164 dB or less) for implementing mMTC, or U-plane latency (e.g., 0.5 ms or less for each of downlink (DL) and uplink (UL), or a round trip of 1 ms or less) for implementing URLLC. 
     The antenna module  197  may transmit or receive a signal or power to or from the outside (e.g., the external electronic device) of the electronic device  101 . According to an embodiment, the antenna module  197  may include an antenna including a radiating element composed of a conductive material or a conductive pattern formed in or on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment, the antenna module  197  may include a plurality of antennas (e.g., array antennas). In such a case, at least one antenna appropriate for a communication scheme used in the communication network, such as the first network  198  or the second network  199 , may be selected, for example, by the communication module  190  (e.g., the wireless communication module  192 ) from the plurality of antennas. The signal or the power may then be transmitted or received between the communication module  190  and the external electronic device via the selected at least one antenna. According to an embodiment, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element may be additionally formed as part of the antenna module  197 . 
     According to various embodiments, the antenna module  197  may form mmWave antenna module. According to an embodiment, the mmWave antenna module may include a printed circuit board, a RFIC disposed on a first surface (e.g., the bottom surface) of the printed circuit board, or adjacent to the first surface and capable of supporting a designated high-frequency band (e.g., an mmwave band), and a plurality of antennas (e.g., array antennas) disposed on a second surface (e.g., the top or a side surface) of the printed circuit board, or adjacent to the second surface and capable of transmitting or receiving signals of the designated high-frequency band. 
     At least some of the above-described components may be coupled mutually and communicate signals (e.g., commands or data) therebetween via an inter-peripheral communication scheme (e.g., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)). 
     According to an embodiment, commands or data may be transmitted or received between the electronic device  101  and the external electronic device  104  via the server  108  coupled with the second network  199 . Each of the electronic devices  102  or  104  may be a device of a same type as, or a different type, from the electronic device  101 . According to an embodiment, all or some of operations to be executed at the electronic device  101  may be executed at one or more of the external electronic devices  102 ,  104 , or  108 . For example, if the electronic device  101  should perform a function or a service automatically, or in response to a request from a user or another device, the electronic device  101 , instead of, or in addition to, executing the function or the service, may request the one or more external electronic devices to perform at least part of the function or the service. The one or more external electronic devices receiving the request may perform the at least part of the function or the service requested, or an additional function or an additional service related to the request, and transfer an outcome of the performing to the electronic device  101 . The electronic device  101  may provide the outcome, with or without further processing of the outcome, as at least part of a reply to the request. To that end, a cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device  101  may provide ultra low-latency services using, e.g., distributed computing or mobile edge computing. In another embodiment, the external electronic device  104  may include an internet-of-things (IoT) device. The server  108  may be an intelligent server using machine learning and/or a neural network. According to an embodiment, the external electronic device  104  or the server  108  may be included in the second network  199 . The electronic device  101  may be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology or IoT-related technology. 
     The electronic device according to various embodiments may be one of various types of electronic devices. The electronic devices may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. According to an embodiment of the disclosure, the electronic devices are not limited to those described above. 
     It should be appreciated that various embodiments of the disclosure and the terms used therein are not intended to limit the technological features set forth herein to particular embodiments and include various changes, equivalents, or replacements for a corresponding embodiment. With regard to the description of the drawings, similar reference numerals may be used to refer to similar or related elements. It is to be understood that a singular form of a noun corresponding to an item may include one or more of the things, unless the relevant context clearly indicates otherwise. As used herein, each of such phrases as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B, or C,” “at least one of A, B, and C,” and “at least one of A, B, or C,” may include any one of, or all possible combinations of the items enumerated together in a corresponding one of the phrases. As used herein, such terms as “1st” and “2nd,” or “first” and “second” may be used to simply distinguish a corresponding component from another, and does not limit the components in other aspect (e.g., importance or order). It is to be understood that if an element (e.g., a first element) is referred to, with or without the term “operatively” or “communicatively,” as “coupled with,” “coupled to,” “connected with,” or “connected to” another element (e.g., a second element), it means that the element may be coupled with the other element directly (e.g., through wires), wirelessly, or via a third element. 
     As used in connection with various embodiments of the disclosure, the term “module” may include a unit implemented in hardware, software, or firmware, and may interchangeably be used with other terms, for example, “logic,” “logic block,” “part,” or “circuitry.” A module may be a single integral component, or a minimum unit or part thereof, adapted to perform one or more functions. For example, according to an embodiment, the module may be implemented in a form of an application-specific integrated circuit (ASIC). 
     Various embodiments as set forth herein may be implemented as software (e.g., the program  140 ) including one or more instructions that are stored in a storage medium (e.g., internal memory  136  or external memory  138 ) that is readable by a machine (e.g., the electronic device  101 ). For example, a processor (e.g., the processor  120 ) of the machine (e.g., the electronic device  101 ) may invoke at least one of the one or more instructions stored in the storage medium, and execute it, with or without using one or more other components under the control of the processor. This allows the machine to be operated to perform at least one function according to the at least one instruction invoked. The one or more instructions may include a code generated by a complier or a code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Wherein, the term “non-transitory” simply means that the storage medium is a tangible device, and does not include a signal (e.g., an electromagnetic wave), but this term does not differentiate between where data is semi-permanently stored in the storage medium and where the data is temporarily stored in the storage medium. 
     According to an embodiment, a method according to various embodiments of the disclosure may be included and provided in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read only memory (CD-ROM)), or be distributed (e.g., downloaded or uploaded) online via an application store (e.g., PlayStore™), or between two user devices (e.g., smart phones) directly. If distributed online, at least part of the computer program product may be temporarily generated or at least temporarily stored in the machine-readable storage medium, such as memory of the manufacturer&#39;s server, a server of the application store, or a relay server. 
     According to various embodiments, each component (e.g., a module or a program) of the above-described components may include a single entity or multiple entities, and some of the multiple entities may be separately disposed in different components. According to various embodiments, one or more of the above-described components may be omitted, or one or more other components may be added. Alternatively or additionally, a plurality of components (e.g., modules or programs) may be integrated into a single component. In such a case, according to various embodiments, the integrated component may still perform one or more functions of each of the plurality of components in the same or similar manner as they are performed by a corresponding one of the plurality of components before the integration. According to various embodiments, operations performed by the module, the program, or another component may be carried out sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order or omitted, or one or more other operations may be added. 
       FIG.  2    is a block diagram  200  of an electronic device supporting legacy network communication and 5G network communication according to various embodiments. 
     Referring to  FIG.  2   , the electronic device  101  may include a first communication processor  212 , a second communication processor  214 , a first RFIC  222 , a second RFIC  224 , a third RFIC  226 , a fourth RFIC  228 , a first radio frequency front end (RFFE)  232 , a second RFFE  234 , a first antenna module  242 , a second antenna module  244 , and an antenna  248 . The electronic device  101  may further include a processor  120  and a memory  130 . A second network  199  may include a first cellular network  292  and a second cellular network  294 . According to another embodiment, the electronic device  101  may further include at least one of the components described with reference to  FIG.  1   , and the second network  199  may further include at least one other network. According to one embodiment, the first communication processor  212 , the second communication processor  214 , the first RFIC  222 , the second RFIC  224 , the fourth RFIC  228 , the first RFFE  232 , and the second RFFE  234  may form at least part of the wireless communication module  192 . According to another embodiment, the fourth RFIC  228  may be omitted or included as part of the third RFIC  226 . 
     The first communication processor  212  may establish a communication channel of a band to be used for wireless communication with the first cellular network  292  and support legacy network communication through the established communication channel. According to various embodiments, the first cellular network may be a legacy network including a second generation (2G), 3G, 4G, or long term evolution (LTE) network. The second communication processor  214  may establish a communication channel corresponding to a designated band (e.g., about 6 GHz to about 60 GHz) of bands to be used for wireless communication with the second cellular network  294 , and support 5G network communication through the established communication channel. According to various embodiments, the second cellular network  294  may be a 5G network defined in 3GPP. Additionally, according to an embodiment, the first communication processor  212  or the second communication processor  214  may establish a communication channel corresponding to another designated band (e.g., about 6 GHz or less) of bands to be used for wireless communication with the second cellular network  294  and support 5G network communication through the established communication channel. According to one embodiment, the first communication processor  212  and the second communication processor  214  may be implemented in a single chip or a single package. According to various embodiments, the first communication processor  212  or the second communication processor  214  may be formed in a single chip or a single package with the processor  120 , the auxiliary processor  123 , or the communication module  190 . 
     Upon transmission, the first RFIC  222  may convert a baseband signal generated by the first communication processor  212  to a radio frequency (RF) signal of about 700 MHz to about 3 GHz used in the first cellular network  292  (e.g., legacy network). Upon reception, an RF signal may be obtained from the first cellular network  292  (e.g., legacy network) through an antenna (e.g., the first antenna module  242 ) and be preprocessed through an RFFE (e.g., the first RFFE  232 ). The first RFIC  222  may convert the preprocessed RF signal to a baseband signal so as to be processed by the first communication processor  212 . 
     Upon transmission, the second RFIC  224  may convert a baseband signal generated by the first communication processor  212  or the second communication processor  214  to an RF signal (hereinafter, 5G Sub6 RF signal) of a Sub6 band (e.g., 6 GHz or less) to be used in the second cellular network  294  (e.g., 5G network). Upon reception, a 5G Sub6 RF signal may be obtained from the second cellular network  294  (e.g., 5G network) through an antenna (e.g., the second antenna module  244 ) and be pretreated through an RFFE (e.g., the second RFFE  234 ). The second RFIC  224  may convert the preprocessed 5G Sub6 RF signal to a baseband signal so as to be processed by a corresponding communication processor of the first communication processor  212  or the second communication processor  214 . 
     The third RFIC  226  may convert a baseband signal generated by the second communication processor  214  to an RF signal (hereinafter, 5G Above 6 RF signal) of a 5G Above 6 band (e.g., about 6 GHz to about 60 GHz) to be used in the second cellular network  294  (e.g., 5G network). Upon reception, a 5G Above 6 RF signal may be obtained from the second cellular network  294  (e.g., 5G network) through an antenna (e.g., the antenna  248 ) and be preprocessed through the third RFFE  236 . The third RFIC  226  may convert the preprocessed 5G Above 6 RF signal to a baseband signal so as to be processed by the second communication processor  214 . According to one embodiment, the third RFFE  236  may be formed as part of the third RFIC  226 . 
     According to an embodiment, the electronic device  101  may include a fourth RFIC  228  separately from the third RFIC  226  or as at least part of the third RFIC  226 . In this case, the fourth RFIC  228  may convert a baseband signal generated by the second communication processor  214  to an RF signal (hereinafter, an intermediate frequency (IF) signal) of an intermediate frequency band (e.g., about 9 GHz to about 11 GHz) and transfer the IF signal to the third RFIC  226 . The third RFIC  226  may convert the IF signal to a 5G Above 6RF signal. Upon reception, the 5G Above 6RF signal may be received from the second cellular network  294  (e.g., a 5G network) through an antenna (e.g., the antenna  248 ) and be converted to an IF signal by the third RFIC  226 . The fourth RFIC  228  may convert an IF signal to a baseband signal so as to be processed by the second communication processor  214 . 
     According to one embodiment, the first RFIC  222  and the second RFIC  224  may be implemented into at least part of a single package or a single chip. According to one embodiment, the first RFFE  232  and the second RFFE  234  may be implemented into at least part of a single package or a single chip. According to one embodiment, at least one of the first antenna module  242  or the second antenna module  244  may be omitted or may be combined with another antenna module to process RF signals of a corresponding plurality of bands. 
     According to one embodiment, the third RFIC  226  and the antenna  248  may be disposed at the same substrate to form a third antenna module  246 . For example, the wireless communication module  192  or the processor  120  may be disposed at a first substrate (e.g., main PCB). In this case, the third RFIC  226  is disposed in a partial area (e.g., lower surface) of the first substrate and a separate second substrate (e.g., sub PCB), and the antenna  248  is disposed in another partial area (e.g., upper surface) thereof; thus, the third antenna module  246  may be formed. By disposing the third RFIC  226  and the antenna  248  in the same substrate, a length of a transmission line therebetween can be reduced. This may reduce, for example, a loss (e.g., attenuation) of a signal of a high frequency band (e.g., about 6 GHz to about 60 GHz) to be used in 5G network communication by a transmission line. Therefore, the electronic device  101  may improve a quality or speed of communication with the second cellular network  294  (e.g., 5G network). 
     According to one embodiment, the antenna  248  may be formed in an antenna array including a plurality of antenna elements that may be used for beamforming. In this case, the third RFIC  226  may include a plurality of phase shifters  238  corresponding to a plurality of antenna elements, for example, as part of the third RFFE  236 . Upon transmission, each of the plurality of phase shifters  238  may convert a phase of a 5G Above 6 RF signal to be transmitted to the outside (e.g., a base station of a 5G network) of the electronic device  101  through a corresponding antenna element. Upon reception, each of the plurality of phase shifters  238  may convert a phase of the 5G Above 6 RF signal received from the outside to the same phase or substantially the same phase through a corresponding antenna element. This enables transmission or reception through beamforming between the electronic device  101  and the outside. 
     The second cellular network  294  (e.g., 5G network) may operate (e.g., stand-alone (SA)) independently of the first cellular network  292  (e.g., legacy network) or may be operated (e.g., non-stand alone (NSA)) in connection with the first cellular network  292 . For example, the 5G network may have only an access network (e.g., 5G radio access network (RAN) or a next generation (NG) RAN and have no core network (e.g., next generation core (NGC)). In this case, after accessing to the access network of the 5G network, the electronic device  101  may access to an external network (e.g., Internet) under the control of a core network (e.g., an evolved packed core (EPC)) of the legacy network. Protocol information (e.g., LTE protocol information) for communication with a legacy network or protocol information (e.g., new radio (NR) protocol information) for communication with a 5G network may be stored in the memory  130  to be accessed by other components (e.g., the processor  120 , the first communication processor  212 , or the second communication processor  214 ). 
       FIG.  3 A  is a front perspective view of an electronic device in a flat or unfolded state according to various embodiments.  FIG.  3 B  is a plan view illustrating the front of the electronic device in an unfolded state according to various embodiments.  FIG.  3 C  is a plan view illustrating the back of the electronic device in an unfolded state according to various embodiments. 
       FIG.  4 A  is a perspective view of the electronic device in a folded state according to various embodiments.  FIG.  4 B  is a perspective view of the electronic device in an intermediate state according to various embodiments. 
     With reference to  FIGS.  3 A to  4 B , the electronic device  300  may include a pair of housings  310  and  320  (e.g., foldable housings) that are rotatably coupled as to allow folding relative to a hinge mechanism (e.g., hinge mechanism  340  in  FIG.  3 B ). In certain embodiments, the hinge mechanism (e.g., hinge mechanism  340  in  FIG.  3 B ) may be disposed along the X-axis direction or the Y-axis direction so that a folding axis corresponds to the X-axis or the Y-axis. In certain embodiments, the electronic device  300  may include two or more hinge mechanisms, which may be arranged to be folded in a same direction or in different directions. According to an embodiment, the electronic device  300  may include a flexible display  330  (e.g., foldable display) disposed in an area formed by the pair of housings  310  and  320 . According to an embodiment, the first housing  310  and the second housing  320  may be disposed on both sides of the folding axis (axis A), and may have a substantially symmetrical shape with respect to the folding axis (axis A). According to an embodiment, the angle or distance between the first housing  310  and the second housing  320  may vary, depending on whether the state of the electronic device  300  is a flat or unfolded state, a folded state, or an intermediate state. 
     According to certain embodiments, the pair of housings  310  and  320  may include a first housing  310  (e.g., first housing structure) coupled to the hinge mechanism (e.g., hinge mechanism  340  in  FIG.  3 B ), and a second housing  320  (e.g., second housing structure) coupled to the hinge mechanism (e.g., hinge mechanism  340  in  FIG.  3 B ). According to an embodiment, in the unfolded state, the first housing  310  may include a first surface  311  facing a first direction (e.g., front direction) (z-axis direction), and a second surface  312  facing a second direction (e.g., rear direction) (negative z-axis direction) opposite to the first surface  311 . According to an embodiment, in the unfolded state, the second housing  320  may include a third surface  321  facing the first direction (z-axis direction), and a fourth surface  322  facing the second direction (negative z-axis direction). According to an embodiment, the electronic device  300  may be operated in such a manner that the first surface  311  of the first housing  310  and the third surface  321  of the second housing  320  face substantially the same first direction (z-axis direction) in the unfolded state, and the first surface  311  and the third surface  321  face one another in the folded state. According to an embodiment, the electronic device  300  may be operated in such a manner that the second surface  312  of the first housing  310  and the fourth surface  322  of the second housing  320  face substantially the same second direction (negative z-axis direction) in the unfolded state, and the second surface  312  and the fourth surface  322  face one another in opposite directions in the folded state. For example, in the folded state, the second surface  312  may face the first direction (z-axis direction), and the fourth surface  322  may face the second direction (negative z-axis direction). 
     According to certain embodiments, the first housing  310  may include a first side member  313  that at least partially forms an external appearance of the electronic device  300 , and a first rear cover  314  coupled to the first side member  313  that forms at least a portion of the second surface  312  of the electronic device  300 . According to an embodiment, the first side member  313  may include a first side surface  313   a , a second side surface  313   b  extending from one end of the first side surface  313   a , and a third side surface  313   c  extending from the other end of the first side surface  313   a . According to an embodiment, the first side member  313  may be formed in a rectangular shape (e.g., square or rectangle) through the first side surface  313   a , second side surface  313   b , and third side surface  313   c.    
     According to certain embodiments, the second housing  320  may include a second side member  323  that at least partially forms the external appearance of the electronic device  300 , and a second rear cover  324  coupled to the second side member  323 , forming at least a portion of the fourth surface  322  of the electronic device  300 . According to an embodiment, the second side member  323  may include a fourth side surface  323   a , a fifth side surface  323   b  extending from one end of the fourth side surface  323   a , and a sixth side surface  323   c  extending from the other end of the fourth side surface  323   a . According to an embodiment, the second side member  323  may be formed in a rectangular shape through the fourth side surface  323   a , fifth side surface  323   b , and sixth side surface  323   c.    
     According to certain embodiments, the pair of housings  310  and  320  are not limited to the shape and combinations illustrated herein, and may be implemented with a combination of other shapes or parts. For example, in certain embodiments, the first side member  313  may be integrally formed with the first rear cover  314 , and the second side member  323  may be integrally formed with the second rear cover  324 . 
     According to certain embodiments, in the unfolded state of the electronic device  300 , the second side surface  313   b  of the first side member  313  and the fifth side surface  323   b  of the second side member  323  may be connected without a gap formed therebetween. According to an embodiment, in the unfolded state of the electronic device  300 , the third side surface  313   c  of the first side member  313  and the sixth side surface  323   c  of the second side member  323  may be connected without a gap formed therebetween. According to an embodiment, in the unfolded state, the electronic device  300  may be configured such that the combined length of the second side surface  313   b  and the fifth side surface  323   b  is longer than the combined length of the first side surface  313   a  and/or the fourth side surface  323   a . In addition, the combined length of the third side surface  313   c  and the sixth side surface  323   c  may be configured to be longer than the length of the first side surface  313   a  and/or the fourth side surface  323   a.    
     According to certain embodiments, the first side member  313  and/or the second side member  323  may be formed of a metal, and may further include a polymer injected into the metal. According to an embodiment, the first side member  313  and/or the second side member  323  may include at least one conductive portion  316  and/or  326  electrically segmented through one or more segmenting portions  3161  and  3162  and/or segmenting  3261  and  3262 , which may be formed using a polymer. In this case, the at least one conductive portion may be electrically connected to a wireless communication circuit included in the electronic device  300 , and may be used as an antenna operating in at least one designated band (e.g., about 400 MHz to about 6 GHz). 
     According to certain embodiments, the first rear cover  314  and/or the second rear cover  324  may be formed of, for example, coated or tinted glass, ceramic, polymer, metal (e.g., aluminum, stainless steel or “STS”, or magnesium), or a combination thereof. 
     According to certain embodiments, the flexible display  330  may be disposed to extend from the first surface  311  of the first housing  310  across the hinge mechanism (e.g., hinge mechanism  340  in  FIG.  3 B ) to at least a portion of the third surface  321  of the second housing  320 . For example, the flexible display  330  may include a first region  330   a  substantially corresponding to the first surface  311 , a second region  330   b  corresponding to the second surface  321 , and a third region  330   c  (e.g., the bendable region) connecting the first region  330   a  and the second region  330   b , and corresponding to the hinge mechanism (e.g., hinge mechanism  340  in  FIG.  3 B ). According to an embodiment, the electronic device  300  may include a first protection cover  315  (e.g., first protection frame or first decoration member) coupled along the periphery of the first housing  310 . According to an embodiment, the electronic device  300  may include a second protection cover  325  (e.g., second protection frame or second decoration member) coupled along the periphery of the second housing  320 . According to an embodiment, the first protection cover  315  and/or the second protection cover  325  may be formed of a metal or polymer material. According to an embodiment, the first protection cover  315  and/or the second protection cover  325  may be used as a decorative member. According to an embodiment, the flexible display  330  may be positioned such that the periphery of the first region  330   a  is interposed between the first housing  310  and the first protection cover  315 . According to an embodiment, the flexible display  330  may be positioned such that the periphery of the second region  330   b  is interposed between the second housing  320  and the second protection cover  325 . According to an embodiment, the flexible display  330  may be positioned such that the periphery of the flexible display  330  corresponding to a protection cap  335  is protected through the protection cap disposed in a region corresponding to the hinge mechanism (e.g., hinge mechanism  340  in  FIG.  3 B ). Consequently, the periphery of the flexible display  330  may be substantially protected from the outside. According to an embodiment, the electronic device  300  may include a hinge housing  341  (e.g., hinge cover) that is disposed so as to support the hinge mechanism (e.g., hinge mechanism  340  in  FIG.  3 B ). The hinge housing  341  may further be exposed to the outside when the electronic device  100  is in the folded state, and be invisible as viewed from the outside when retracted into a first space (e.g., internal space of the first housing  310 ) and a second space (e.g., internal space of the second housing  320 ) when the electronic device  300  is in the unfolded state. In certain embodiments, the flexible display  330  may be disposed to extend from at least a portion of the second surface  312  to at least a portion of the fourth surface  322 . In this case, the electronic device  300  may be folded so that the flexible display  330  is exposed to the outside (i.e., an out-folding scheme). 
     According to certain embodiments, the electronic device  300  may include a sub-display  331  disposed separately from the flexible display  330 . According to an embodiment, the sub-display  331  may be disposed to be at least partially exposed on the second surface  312  of the first housing  310 , and may display status information of the electronic device  300  in place of the display function of the flexible display  330  when in the folded state. According to an embodiment, the sub-display  331  may be disposed to be visible from the outside through at least some region of the first rear cover  314 . In certain embodiments, the sub-display  331  may be disposed on the fourth surface  322  of the second housing  320 . In this case, the sub-display  331  may be disposed to be visible from the outside through at least some region of the second rear cover  324 . 
     According to certain embodiments, the electronic device  300  may include at least one of an input device  303  (e.g., microphone), sound output devices  301  and  302 , a sensor module  304 , camera devices  305  and  308 , a key input device  306 , or a connector port  307 . As illustrated, the input device  303  (e.g., microphone), sound output devices  301  and  302 , sensor module  304 , camera devices  305  and  308 , key input device  306 , and connector port  307  are indicated by a hole or shape formed in the first housing  310  or the second housing  320 , but may include additional electronic components (e.g., input device, sound output device, sensor module, or camera device) that are disposed inside the electronic device  300  and operated through a hole or a shape formed in the first housing  310  or the second housing  320 . 
     According to certain embodiments, the input device may include at least one microphone  303  disposed on the second housing  320 . In certain embodiments, the input device may include a plurality of microphones  303  disposed to detect the direction of a sound. In certain embodiments, a plurality of microphones  303  may be disposed at appropriate positions in the first housing  310  and/or the second housing  320 . According to an embodiment, the sound output devices may include speakers  301  and  302 . According to an embodiment, the sound output devices may include a receiver  301  for calls disposed in the first housing  310 , and a speaker  302  disposed in the second housing  320 . In certain embodiments, the input device, the sound output devices, and the connector port  307  may be disposed in a space arranged in the first housing  310  and/or the second housing  320  of the electronic device  30 , and may be exposed to the external environment through at least one hole formed in the first housing  310  and/or the second housing  320 . According to an embodiment, at least one connector port  307  may be used to transmit and receive power and/or data to and from an external electronic device. In certain embodiments, at least one connector port (e.g., ear jack hole) may accommodate a connector (e.g., ear jack) for transmitting and receiving an audio signal to and from an external electronic device. In certain embodiments, the hole formed in the first housing  310  and/or the second housing  320  may be commonly used for the input device and the sound output devices. In certain embodiments, the sound output devices may include a speaker (e.g., piezo speaker) that operates without using a hole formed in the first housing  310  and/or the second housing  320 . 
     According to certain embodiments, the sensor module  304  may generate an electrical signal or data value corresponding to an internal operating state of the electronic device  300  or an external environmental state. The sensor module  304  may detect an external environment, for example, through the first surface  311  of the first housing  310 . In certain embodiments, the electronic device  300  may further include at least one sensor module disposed to detect an external environment through the second surface  312  of the first housing  310 . According to an embodiment, the sensor module  304  (e.g., illuminance sensor) may be disposed under the flexible display  330  to detect an external environment through the flexible display  330 . According to an embodiment, the sensor module  304  may include at least one of a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, an illuminance sensor, a proximity sensor, a biometric sensor, an ultrasonic sensor, or an illuminance sensor. 
     According to certain embodiments, the camera devices  305  and  308  may include a first camera device  305  (e.g., front camera device) disposed on the first surface  311  of the first housing  310 , and a second camera device  308  disposed on the second surface  312  of the first housing  310 . The electronic device  300  may further include a flash  309  disposed close to the second camera device  308 . According to an embodiment, the camera device  305  or  308  may include one or more lenses, an image sensor, and/or an image signal processor. The flash  309  may include, for example, a light emitting diode or a xenon lamp. According to an embodiment, the camera devices  305  and  308  may be arranged so that two or more lenses (e.g., wide-angle lens, super-wide-angle lens, or telephoto lens) and image sensors are positioned on one surface (e.g., first surface  311 , second surface  312 , third surface  321 , or fourth surface  322 ) of the electronic device  300 . In certain embodiments, the camera devices  305  and  308  may include time-of-flight (TOF) lenses and/or an image sensor. 
     According to certain embodiments, the key input device  306  (e.g., key button) may be disposed on the third side surface  313   c  of the first side member  313  of the first housing  310 . In certain embodiments, the key input device  306  may be disposed on at least one of the other side surfaces  313   a  and  313   b  of the first housing  310  and/or the side surfaces  323   a ,  323   b , and  323   c  of the second housing  320 . In certain embodiments, some or all of the key input devices  306  may be omitted from the electronic device  300 , and omitted key input devices  306  may be implemented in other forms, such as soft keys, on the flexible display  330 . In certain embodiments, the key input device  306  may be implemented by using a pressure sensor included in the flexible display  330 . 
     According to certain embodiments, some of the camera devices  305  and  308  (e.g., first camera device  305 ) or the sensor module  304  may be disposed to be exposed through the flexible display  330 . For example, the first camera device  305  or the sensor module  304  may be arranged in the internal space of the electronic device  300  so as to be in exposed to the external environment through an opening (e.g., through hole) formed at least partially in the flexible display  330 . In another embodiment, some sensor modules  304  may be arranged in the internal space of the electronic device  300  so as to perform their functions without being visually exposed through the flexible display  330 . For example, in this case, the opening of a region of the flexible display  330  facing the sensor module may be not needed, and the flexibly display  330  may extend over one or more sensor modules  304 . 
     With reference to  FIG.  4 B , the electronic device  300  may be operated to remain in an intermediate state through the hinge mechanism (e.g., hinge device  340  in  FIG.  3 B ). In this case, the electronic device  300  may control the flexible display  330  to display different pieces of content on the display area corresponding to the first surface  311  and the display area corresponding to the third surface  321 . According to an embodiment, the electronic device  300  may be operated substantially in an unfolded state (e.g., unfolded state of  FIG.  3 A ) and/or substantially in a folded state (e.g., folded state of  FIG.  4 A ) with respect to a specific inflection angle (e.g., angle between the first housing  310  and the second housing  320  in the intermediate state) through the hinge mechanism (e.g., hinge mechanism  340  in  FIG.  3 B ). For example, when a pressing force is applied in the unfolding direction (B direction) in a state where the electronic device  300  is unfolded at a specific inflection angle, through the hinge mechanism (e.g., hinge mechanism  340  in  FIG.  1 B ), the electronic device  300  may be transitioned to an unfolded state (e.g., unfolded state of  FIG.  3 A ). For example, when a pressing force is applied in the folding direction (C direction) in a state where the electronic device  300  is unfolded at a specific inflection angle, through the hinge mechanism (e.g., hinge mechanism  340  in  FIG.  3 B ), the electronic device  300  may be transitioned to a closed state (e.g., folded state of  FIG.  4 A ). In an embodiment, the electronic device  300  may be operated to remain in an unfolded state at various angles through the hinge mechanism (e.g., hinge mechanism  340  in  FIG.  3 B ). 
       FIG.  4 C  is an exploded perspective view of the electronic device according to various embodiments. 
     With reference to  FIG.  4 C , the electronic device  300  may include a first side member  313  (e.g., first side frame), a second side member  323  (e.g., second side frame), and a hinge mechanism  340  (e.g., hinge module) rotatably connecting the first side member  313  and the second side member  323 . According to an embodiment, the electronic device  300  may include a first support member  3131  (e.g., first support member) at least partially extending from the first side member  313 , and a second support member  3231  at least partially extending from the second side member  323 . According to an embodiment, the first support member  3131  may be integrally formed with the first side member  313  or may be structurally coupled to the first side member  313 . Similarly, the second support member  3231  may be integrally formed with the second side member  323  or may be structurally coupled to the second side member  323 . According to an embodiment, the electronic device  300  may include a flexible display  330  disposed to be supported by the first support member  3131  and the second support member  3231 . According to an embodiment, the electronic device  300  may include a first rear cover  314  that is coupled to the first side member  313  and provides a first space between itself and the first support member  3131 , and a second rear cover  324  that is coupled to the second side member  323  and provides a second space between itself and the second support member  3231 . In certain embodiments, the first side member  313  and the first rear cover  314  may be integrally formed. In certain embodiments, the second side member  323  and the second rear cover  324  may be integrally formed. According to an embodiment, the electronic device  300  may include a first housing  310  (e.g., first housing  310  in  FIG.  3 A ) (e.g., first housing structure) provided through the first side member  313 , the first support member  3131 , and the first rear cover  314 . According to an embodiment, the electronic device  300  may include a second housing (e.g., second housing  320  in  FIG.  3 A ) (e.g., second housing structure) provided through the second side member  323 , the second support member  3231 , and the second rear cover  324 . According to an embodiment, the electronic device  300  may include a sub-display  331  that is disposed to be visible from the outside through at least some region of the first rear cover  314 . 
     According to certain embodiments, the electronic device  300  may include a first substrate assembly  361  (e.g., main printed circuit board), a camera assembly  363 , a first battery  371 , or a first bracket  351 , arranged in the first space between the first side member  313  and the first rear cover  314 . According to an embodiment, the camera assembly  363  may include a plurality of camera devices (e.g., camera devices  305  and  308  in  FIGS.  3 A and  4 A ), and may be electrically connected to the first substrate assembly  361 . According to an embodiment, the first bracket  351  may provide a support structure for supporting the first substrate assembly  361  and/or the camera assembly  363 , and improved rigidity. According to an embodiment, the electronic device  300  may include a second board assembly  362  (e.g., sub printed circuit board), an antenna  390  (e.g., coil member), a second battery  372 , or a second bracket  352 , arranged in the second space between the second side member  323  and the second rear cover  324 . According to an embodiment, the electronic device  300  may include a wiring member  380  (e.g., FPCB) extending from the first substrate assembly  361  across the hinge mechanism  340  to a plurality of electronic components arranged between the second side member  323  and the second rear cover  324 , to provide electrical connections therebetween. According to an embodiment, the antenna  390  may include a near field communication (NFC) antenna, a wireless charging antenna, and/or a magnetic secure transmission (MST) antenna. The antenna  390  may, for example, perform short-range communication with an external device or wirelessly transmit and receive power utilized for charging. 
     According to certain embodiments, the electronic device  300  may include a hinge housing  341  (e.g., hinge cover) that supports the hinge mechanism  340  and is disposed so as to be exposed to the outside when the electronic device  300  is in the folded state (e.g., folded state of  FIG.  4 A ) and be invisible from the outside by being retracted into the first space and/or the second space when the electronic device  300  is in the unfolded state (e.g., unfolded state of  FIG.  3 A ). 
     According to certain embodiments, the electronic device  300  may include a first protection cover  315  coupled along the periphery of the first side member  313 . According to an embodiment, the electronic device  300  may include a second protection cover  325  coupled along the periphery of the second side member  323 . According to an embodiment, in the flexible display  330 , the periphery of a first flat portion (e.g., first flat portion  330   a  in  FIG.  3 B ) may be protected by the first protection cover  315 . According to an embodiment, in the flexible display  330 , the periphery of a second flat portion (e.g., second flat portion  330   b  in  FIG.  3 B ) may be protected by the second protection cover  325 . According to an embodiment, the electronic device  300  may include a protection cap  335  that protects the periphery of the third region (e.g., third region  330   c  in  FIG.  3 B ) of the flexible display  330  corresponding to the hinge mechanism  340 . 
     According to certain embodiments, the first support member  3131  may include a first support surface facing a first direction (z-axis direction), and a second support surface facing a second direction (negative z-axis direction) opposite to the first direction. According to an embodiment, the second support member  3231  may include a third support surface facing the first direction, and a fourth support surface facing the second direction in the unfolded state. According to an embodiment, the flexible display  330  may be supported by the first support surface of the first support member  3131  and the third support surface of the second support member  3231 . 
     In various embodiments, an electronic device  300  may include a plurality of antenna structures, for example, a first antenna structure  510  and a second antenna structure  520 . The plurality of antenna structures  510  and  520  may be configured to operate in a frequency band (e.g., the mmWave band) of about 25 GHz to 45 GHz. 
     In various embodiments, the first antenna structure  510  and the second antenna structure  520  may be disposed in the inner space of a first housing  310 . For example, the first antenna structure  510  may be disposed in the inner space of the first housing  310  (e.g., the space between a first support member  3131  and a first rear cover  314 ) to form a first electric field (e.g., a first directional beam) in a second direction (e.g., the −z-axis direction) so as to pass through the first rear cover  314 . In an embodiment, the first antenna structure  510  may be mounted on a first mounting part (e.g., the first mounting part  505  in  FIG.  5   ) provided in the inner space of the first housing  310 . In an embodiment, the first antenna structure  510  may be disposed in an area that does not overlap a hinge structure  340 . The second antenna structure  520  may be disposed in the inner space of the first housing  310  (e.g., the space between the first support member  3131  and the first rear cover  314 ) to form a second electric field (e.g., a second directional beam) in a third direction (e.g., the −x-axis direction) perpendicular to the second direction (e.g., the −z-axis direction). For example, the second antenna structure  520  may be mounted on a second mounting part (e.g., the second mounting part  515  in  FIG.  5   ) provided in the first side member  313 , and the second electric field may pass through the first side member  313 . 
     In various embodiments, the electronic device  300  may include a conductive member  810  (e.g., a periodic structure) for reducing near-field interference between the first antenna structure  510  and the second antenna structure  520 . In an embodiment, the conductive member  810  may be provided between the first antenna structure  510  and the second antenna structure  520  when the first rear cover  314  is viewed from above. In an embodiment, the conductive member  810  may be formed of any one of a metal tape, a graphite sheet, a metal sheet, a conductive ink, or a metal material. For example, the conductive member  810  may be formed by attaching a metal tape to the inner surface of the first rear cover  314 . As another example, in the case where the inner surface of the first rear cover  314  is formed of a graphite sheet and a metal sheet, the conductive member  810  may be formed by etching the metal sheet into a pattern. As another example, the conductive member  810  may be formed by printing conductive ink on the inner surface of the first rear cover  314 . As another example, the conductive member  810  may be formed by scattering a metal material on the inner surface of the first rear cover  314 . 
     The first antenna structure  510 , the second antenna structure  520 , and the conductive member  810  described above according to various embodiments will be described in detail with reference to  FIGS.  5  to  12   . 
       FIG.  5    is a diagram illustrating an arrangement of a plurality of antenna structures  510  and  520  according to various embodiments. 
     Referring to  FIG.  5   , an electronic device (e.g., the electronic device  300  in  FIG.  3 A ) may include a first housing (e.g., the first housing  310  in  FIG.  3 A ) including a first support member (e.g., the first support member  3131  in  FIG.  4 C ) facing in a first direction (e.g., the z-axis direction), a first rear cover (e.g., the first rear cover  314  in  FIG.  3 C ) facing in a second direction (e.g., the −z-axis direction) opposite the direction of the first support member  3131 , and a first side member (e.g., the first side member  313  in  FIG.  3 A ) surrounding the space between the first support member  3131  and the first rear cover  314 . The electronic device  300  may include a second housing (e.g., the second housing  320  in  FIG.  3 A ) that is connected to the first housing  310  so as to be folded about a folding axis (the axis A) through a hinge structure (e.g., the hinge structure  340  in  FIG.  3 B ), a second support member (e.g., the support member  3231  in  FIG.  4 C ) facing in the first direction (e.g., the z-axis direction), a second rear cover (e.g., the second rear cover  324  in  FIG.  3 C ) facing in a second direction (e.g., the −z-axis direction) opposite the direction of the second support member  3231 , and a second side member (e.g., the second side member  323  in  FIG.  3 A ) surrounding the space between the second support member  3231  and the second rear cover  324 . 
     In various embodiments, the first support member  3131  may be integrally formed with the first side member  313  or may be structurally coupled to the first side member  313 . Similarly, the second support member  3231  may be integrally formed with the second side member  323  or may be structurally coupled to the second side member  323 . 
     In various embodiments, the first rear cover  314  and/or the second rear cover  324  may be formed of at least one piece of coated or tinted glass, ceramic, polymer, or metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of them. 
     In various embodiments, the electronic device  300  may include a plurality of antenna structures, for example, a first antenna structure  510  and a second antenna structure  520 . The plurality of antenna structures  510  and  520  may be configured to operate in a frequency band (e.g., the mmWave band) of about 25 GHz to 45 GHz. For example, the first antenna structure  510  may be configured to operate in a frequency band of about 28 GHz. The second antenna structure  520  may be configured to operate in a frequency band of about 39 GHz. However, not limited thereto. 
     In various embodiments, the first antenna structure  510  and the second antenna structure  520  may be disposed in the inner space of the first housing  310 . For example, the first antenna structure  510  may be disposed in the inner space of the first housing  310  (e.g., the space between the first support member  3131  and the first rear cover  314 ) to form a first electric field (e.g., a first directional beam) in a second direction (e.g., the −z-axis direction) so as to pass through the first rear cover  314 . For example, the first antenna structure  510  may include an array antenna AR including a plurality of conductive patches (e.g.,  731 ,  733 ,  735 , and  737  in  FIG.  7 C ) as antenna elements. The plurality of conductive patches  731 ,  733 ,  735 , and  737  may be disposed on a first substrate surface (e.g., the first substrate surface  7401  in  FIG.  7 C ) of a substrate (e.g., the substrate  740  in  FIG.  7 C ). For example, the plurality of conductive patches  731 ,  733 ,  735 , and  737  may be disposed to be at least partially exposed through the first substrate surface  7401  of the substrate  740  or inserted into the substrate  740 , and may thereby form a first electric field (e.g., a first directional beam) in the second direction (e.g., the −z-axis direction). In an embodiment, the first antenna structure  510  may be mounted on a first mounting part  505  provided in the inner space of the first housing  310  such that the first substrate surface  7401  of the substrate  740  faces the first rear cover  314 . In an embodiment, the first antenna structure  510  may be disposed in an area that does not overlap the hinge structure  340 . 
     In various embodiments, the second antenna structure  520  may be disposed in the inner space of the first housing  310  (e.g., the space between the first support member  3131  and the first rear cover  314 ) to form a second electric field (e.g., a second directional beam) in a third direction (e.g., the −x-axis direction) perpendicular to the second direction (e.g., the −z-axis direction), such that the second electric field may pass through the first side member  313 . For example, like the first antenna structure  510 , the second antenna structure  520  may include a plurality of conductive patches ( 731 ,  733 ,  735 , and  737  in  FIG.  7 C ) disposed on the first substrate surface  7401  of the substrate  740 . For example, the plurality of conductive patches  731 ,  733 ,  735 , and  737  may be disposed to be at least partially exposed through the first substrate surface  7401  of the substrate  740  or inserted into the substrate  740 , and may thereby form a second electric field (e.g., a second directional beam) in the third direction (e.g., the −x-axis direction). In an embodiment, the second antenna structure  520  may be mounted on a second mounting part  515  provided in the first side member  313  such that the first substrate surface  7401  of the substrate  740  faces the first side member  313 . 
       FIG.  6 A  is a diagram illustrating a structure of, for example, a third antenna module described with reference to  FIG.  2    according to various embodiments. 
       FIG.  6 A , view (a) is a perspective view illustrating the third antenna module  246  viewed from one side, and  FIG.  6 A , view (b) is a perspective view illustrating the third antenna module  246  viewed from the other side.  FIG.  6 A , view (c) is a cross-sectional view illustrating the third antenna module  246  taken along line X-X′ of  FIG.  6 A . 
     With reference to  FIG.  6 A , in one embodiment, the third antenna module  246  may include a printed circuit board  610 , an antenna array  630 , a RFIC  652 , and a PMIC  654 . Alternatively, the third antenna module  246  may further include a shield member  690 . In other embodiments, at least one of the above-described components may be omitted or at least two of the components may be integrally formed. 
     The printed circuit board  610  may include a plurality of conductive layers and a plurality of non-conductive layers stacked alternately with the conductive layers. The printed circuit board  610  may provide electrical connections between the printed circuit board  610  and/or various electronic components disposed outside using wirings and conductive vias formed in the conductive layer. 
     The antenna array  630  (e.g.,  248  of  FIG.  2   ) may include a plurality of antenna elements  632 ,  634 ,  636 , or  638  disposed to form a directional beam. As illustrated, the antenna elements  632 ,  634 ,  636 , or  638  may be formed at a first surface of the printed circuit board  610 . According to another embodiment, the antenna array  630  may be formed inside the printed circuit board  610 . According to the embodiment, the antenna array  630  may include the same or a different shape or kind of a plurality of antenna arrays (e.g., dipole antenna array and/or patch antenna array). 
     The RFIC  652  (e.g., the third RFIC  226  of  FIG.  2   ) may be disposed at another area (e.g., a second surface opposite to the first surface) of the printed circuit board  610  spaced apart from the antenna array. The RFIC  652  is configured to process signals of a selected frequency band transmitted/received through the antenna array  630 . According to one embodiment, upon transmission, the RFIC  652  may convert a baseband signal obtained from a communication processor (not shown) to an RF signal of a designated band. Upon reception, the RFIC  652  may convert an RF signal received through the antenna array  630  to a baseband signal and transfer the baseband signal to the communication processor. 
     According to another embodiment, upon transmission, the RFIC  652  may up-convert an IF signal (e.g., about 9 GHz to about 11 GHz) obtained from an intermediate frequency integrate circuit (IFIC) (e.g.,  228  of  FIG.  2   ) to an RF signal of a selected band. Upon reception, the RFIC  652  may down-convert the RF signal obtained through the antenna array  630 , convert the RF signal to an IF signal, and transfer the IF signal to the IFIC. 
     The PMIC  654  may be disposed in another partial area (e.g., the second surface) of the printed circuit board  610  spaced apart from the antenna array  630 . The PMIC  654  may receive a voltage from a main PCB (e.g. a main printed circuit board  1125  of  FIG.  11   ) to provide power necessary for various components (e.g., the RFIC  652 ) on the antenna module. 
     The shielding member  690  may be disposed at a portion (e.g., the second surface) of the printed circuit board  610  so as to electromagnetically shield at least one of the RFIC  652  or the PMIC  654 . According to one embodiment, the shield member  690  may include a shield can. 
     Although not shown, in various embodiments, the third antenna module  646  may be electrically connected to another printed circuit board (e.g., main circuit board) through a module interface. The module interface may include a connecting member, for example, a coaxial cable connector, board to board connector, interposer, or flexible printed circuit board (FPCB). The RFIC  652  and/or the PMIC  654  of the antenna module may be electrically connected to the printed circuit board through the connection member. 
     In various embodiments, the third antenna module  246  may be an antenna structure (e.g., the first antenna structure  510  or the second antenna structure  520 ) illustrated in  FIG.  5   . 
       FIG.  6 B  is a cross-sectional view illustrating the third antenna module  246  taken along line Y-Y′ of  FIG.  6 A  according to various embodiments. 
     The printed circuit board  610  of the illustrated embodiment may include an antenna layer  611  and a network layer  613 . 
     Referring to  FIG.  6 B , the antenna layer  611  may include at least one dielectric layer  637 - 1 , an antenna element  636  and/or a power feeding portion  625  formed on or inside an outer surface of a dielectric layer. The power feeding portion  625  may include a power feeding point  627  and/or a power feeding line  629 . 
     The network layer  613  may include at least one dielectric layer  637 - 2 , at least one ground layer  633 , at least one conductive via  635 , a transmission line  623 , and/or a power feeding line  629  formed on or inside an outer surface of the dielectric layer. 
     Further, as illustrated, the RFIC  652  (e.g., the third RFIC  226  of  FIG.  2   ) of view (c) of  FIG.  6 A  may be electrically connected to the network layer  613  through, for example, first and second solder bumps  640 - 1  and  640 - 2 . In other embodiments, various connection structures (e.g., solder or ball grid array (BGA)) instead of the solder bumps may be used. The RFIC  652  may be electrically connected to the antenna element  636  through the first solder bump  640 - 1 , the transmission line  623 , and the power feeding portion  625 . The RFIC  652  may also be electrically connected to the ground layer  633  through the second solder bump  640 - 2  and the conductive via  635 . Also, the RFIC  652  may be electrically connected to the above-described module interface through the power feeding line  629 . 
       FIG.  7 A  is a diagram illustrating an arrangement of a plurality of antenna structures  510  and  520  according to various embodiments. 
     Referring to  FIG.  7 A , as shown in  FIG.  5    above, an electronic device (e.g., the electronic device  300  in  FIG.  3 A ) may include a first housing (e.g., the first housing  310  in  FIG.  3 A ) including a first support member (e.g., the first support member  3131  in  FIG.  4 C ) facing in a first direction (e.g., the z-axis direction), a first rear cover (e.g., the first rear cover  314  in  FIG.  3 C ) facing in a second direction (e.g., the −z-axis direction) opposite the direction of the first support member  3131 , and a first side member (e.g., the first side member  313  in  FIG.  3 A ) surrounding the space between the first support member  3131  and the first rear cover  314 . 
     In various embodiments, the electronic device  300  may include a plurality of antenna structures, for example, a first antenna structure  510  and a second antenna structure  520 , configured to operate in a frequency band (e.g., the mmWave band) of about 25 GHz to 45 GHz. 
     In an embodiment, the first antenna structure  510  may be disposed in the inner space of the first housing  310  to form a first electric field (e.g., a first directional beam) in a second direction (e.g., the −z-axis direction) so as to pass through the first rear cover  314 . The second antenna structure  520  may be disposed in the inner space of the first housing  310  to form a second electric field (e.g., a second directional beam) in a third direction (e.g., the −x-axis direction) perpendicular to the second direction (e.g., the −z-axis direction), such that the second electric field may pass through the first side member  313 . For example, each of the first antenna structure  510  and the second antenna structure  520  may include a plurality of conductive patches (e.g.,  731 ,  733 ,  735 , and  737  in  FIG.  7 B ) that are disposed to be at least partially exposed through a first substrate surface  7401  of a substrate  740  or inserted into the substrate  740 . 
     In various embodiments, the second antenna structure  520  may be mounted on a second mounting part  515  provided in the first side member  313  such that the first substrate surface (e.g., the first substrate surface  7401  in  FIG.  7 B ) of the substrate (e.g., the substrate  740  in  FIG.  7 C ) faces the first side member  313 . The second antenna structure  520  may include a protective member  745  disposed to at least partially surround an RFIC (e.g., the RFIC  652  in  FIG.  6 A ) and/or a PMIC (e.g., the PMIC  654  in  FIG.  6 A ) that is disposed on a second substrate surface (e.g., the second substrate surface  7402  in  FIG.  7 C ) facing in the opposite direction of the first substrate surface  7401  of the substrate  740 . 
     In various embodiments, the first antenna structure  510  may be mounted on a first mounting part  505  provided in the inner space of the first housing  310  such that the first substrate surface  7401  of the substrate  740  faces the first rear cover  314 . 
     In various embodiments, the first antenna structure  510  and the second antenna structure  520  may be electrically connected to a main PCB (e.g., the first substrate assembly  361  in  FIG.  4 C ) through an electrical connection member  715  (or a wiring member) (e.g., an FPCB connector or a flexible RF cable (FRC)). For example, the electrical connection member  715  may include a plurality of connectors disposed at the ends thereof. The connector (e.g., the connector  760  in  FIG.  7 C ) of the first antenna structure  510  may be connected to a connector disposed at one end of the electrical connection member  715 . The connector (e.g., the connector  760  in  FIG.  7 C ) of the second antenna structure  520  may be connected to a connector disposed at the opposite end of the electrical connection member  715 . The connector disposed at another end of the electrical connection member  715  may be connected to the main PCB. Accordingly, the first antenna structure  510 , the second antenna structure  520 , and the main PCB may be electrically connected. 
     However, embodiments are not limited thereto. For example, the first antenna structure  510  may be electrically connected to the main PCB through a first electrical connection member (e.g., an FPCB connector or a flexible RF cable (FRC)), and the second antenna structure  520  may be electrically connected to the main PCB through a second electrical connection member (e.g., an FPCB connector or a flexible RF cable (FRC)). For example, each of the first electrical connection member and the second electrical connection member may include connectors disposed at both ends thereof. The connector  760  of the first antenna structure  510  may be connected to a connector disposed at one end of the first electrical connection member. The connector disposed at the opposite end of the first electrical connection member may be connected to the main PCB. Accordingly, the first antenna structure  510  and the main PCB may be electrically connected. As another example, the connector  760  of the second antenna structure  520  may be connected to a connector disposed at one end of the second electrical connection member. The connector disposed at the opposite end of the second electrical connection member may be connected to the main PCB. Accordingly, the second antenna structure  520  and the main PCB may be electrically connected. 
     In various embodiments, the first antenna structure  510  may be disposed on the back side (e.g., the −z-axis direction) of the electrical connection member  715  (e.g., an FPCB connector, a flexible RF cable (FRC), or the wiring member  380  in  FIG.  4 C ). The second antenna structure  520  may be disposed on the back side (e.g., the −z-axis direction) of the electrical connection member  715  (e.g., an FPCB connector or a flexible RF cable (FRC)), or may be disposed on the front side (e.g., the z-axis direction) thereof. For example, the connector  760  of the second antenna structure  520  and the connector disposed at the opposite end of the electrical connection member  715  may be electrically connected, and the electrical connection member  715  may be disposed on the back side (e.g., the −z-axis direction) of another electrical connection member  717  (e.g., a battery connector) (or the wiring member  380  in  FIG.  4 C ) or may be disposed on the front side (e.g., the z-axis direction) thereof to be connected to the main PCB. However, embodiments are not limited thereto. 
     In various embodiments, the first antenna structure  510  and the second antenna structure  520  may be disposed to be spaced apart from each other by a specified distance  710 . For example, the first antenna structure  510  may be disposed to be spaced apart from the second antenna structure  520  by a specified distance  710  (e.g., about 100 mm or less (e.g., within a maximum length center frequency of 10λ)). For example, in the case where the electronic device  300  is a foldable electronic device, an electrical connection member (e.g., an FPCB or an FRC) may connect a plurality of antenna structures (e.g., the first antenna structure  510  and the second antenna structure  520 ), which are configured to operate in a frequency band (e.g., the mmWave band) of about 25 GHz to 45 GHz, in the inner space of the first housing (e.g., the first housing  310  in  FIG.  3 A ) and the inner space of the second housing (e.g., the second housing  320  in  FIG.  3 A ), based on a hinge structure (e.g., the hinge structure  340  in  FIG.  3 B ). In this case, because intermediate frequency (IF) loss is large, it may be difficult to dispose a plurality of antenna structures in the inner space of the first housing  310  and the inner space of the second housing  320 . In addition, spaces in which various modules are to be disposed may be preferentially allocated to the inner space of an electronic device, and a plurality of antenna structures  510 , an RFIC (e.g., the RFIC  652  in  FIG.  6 A ), and a power supply part (e.g., the power supply unit  625  in  FIG.  6 B ) may be minimized, so that a plurality of antenna structures, for example, the first antenna structure  510  and the second antenna structure  520 , may be spaced apart from each other by a specified distance  710 . In an embodiment, the specified distance  710  may indicate a separation distance between the ends of each antenna structure. Embodiments are not limited thereto, and the specified distance  710  may indicate a distance between a feeding point of the first antenna structure  510  and a feeding point of the second antenna structure  520 . 
       FIG.  7 B  is a partial-cross-sectional view of an electronic device  300  taken along line C-C′ in  FIG.  7 A  according to various embodiments. 
     Referring to  FIG.  7 B , the substrate  740  of the second antenna structure  520  may be mounted on a second mounting part  515  of the first side member  313  when a side member (e.g., the first side member  313 ) is viewed from the outside. The second antenna structure  520  may be disposed on the first substrate surface  7401  of the substrate  740 . For example, the second antenna structure  520  may include an array antenna AR including a plurality of conductive patches  731 ,  733 ,  735 , and  737 . The plurality of conductive patches  731 ,  733 ,  735 , and  737  may be disposed to be at least partially exposed through the first substrate surface  7401  of the substrate  740  or inserted into the substrate  740 , and may thereby form an electric field in the −x-axis direction. 
       FIG.  7 C  is a diagram illustrating antenna structures  510  and  520  according to various embodiments. 
     Reference number  730  in  FIG.  7 C  indicates a perspective view of an antenna structure according to various embodiments (e.g., the first antenna structure  510  or the second antenna structure  520  in  FIG.  5   ) when viewed from one side, and reference number  750  indicates a view of the antenna structure  510  or  520  when viewed from the other side. 
     The antenna structure  510  or  520  in  FIG.  7 C  according to various embodiments may be at least partially similar to the third antenna module  246  in  FIGS.  2 ,  6 A, and  6 B  described above, or other embodiments of the antenna structure may be further included. 
     Referring to  FIG.  7 C , as shown in the view identified by reference number  730 , the antenna structure  510  or  520  may include an array antenna AR including a plurality of conductive patches  731 ,  733 ,  735 , and  737  as antenna elements. In an embodiment, the plurality of conductive patches  731 ,  733 ,  735 , and  737  may be disposed on a substrate  740  (e.g., a printed circuit board). The substrate  740  may include a first substrate surface  7401  facing in a first direction (e.g., the direction {circle around (1)}), a second substrate surface  7402  facing in a second direction (e.g., the direction {circle around (2)}) opposite the direction of the first substrate surface  7401 , and a substrate side-surface  7403  surrounding the space between the first substrate surface  7401  and the second substrate surface  7402 . The plurality of conductive patches  731 ,  733 ,  735 , and  737  may be disposed to be at least partially exposed through the first substrate surface  7401  or may be inserted into the substrate  740 , and may thereby form a beam pattern (or directional beam or an electric field) in the first direction (e.g., the direction {circle around (1)}). 
     In an embodiment, the conductive patches  731 ,  733 ,  735 , and  737  may have substantially the same shape. Although it has been described that the antenna structure  510  or  520  may be an array antenna AR including four conductive patches  731 ,  733 ,  735 , and  737 , embodiments are not limited thereto. For example, the antenna structure  510  or  520  may include a single conductive patch, or may include two or five or more conductive patches as an array antenna AR. 
     In an embodiment, the substrate side-surface  7403  may include a first substrate side-surface  7403   a  having a first length, a second substrate side-surface  7403   b  extending perpendicularly from the first substrate side-surface  7403   a  and having a second length less than the first length, a third substrate side-surface  7403   c  extending parallel to the first substrate side-surface  7403   a  from the second substrate side-surface  7403   b  and having the first length, and a fourth substrate side-surface  7403   d  extending parallel to the second substrate side-surface  7403   b  from the third substrate side-surface  7403   c  and having the second length. 
     In an embodiment, the antenna structure (e.g., the first antenna structure  510 ) may be disposed in the inner space of the electronic device (e.g., the electronic device  300  in  FIG.  3 A ) such that the first substrate surface  7401  of the substrate  740  faces at least a portion of a first rear cover (e.g., the first rear cover  314  in  FIG.  3 C ) of a first housing (e.g., the first housing  310  in  FIG.  3 A ). 
     In an embodiment, the antenna structure (e.g., the second antenna structure  520 ) may be disposed in the inner space of the electronic device  300  such that the first substrate surface  7401  of the substrate  740  faces a second side surface (e.g., the second side surface  313   b  in  FIG.  3 A ) of the first housing  310 . 
     In various embodiments, as shown by reference numeral  750 , the antenna structure  510  or  520  may include an RFIC (e.g., the RFIC  652  in  FIG.  6 A ) and/or a PMIC (e.g., the PMIC  654  in  FIG.  6 A ) disposed in a portion of the second substrate surface  7402  of the substrate  740 . In an embodiment, the plurality of conductive patches  731 ,  733 ,  735 , and  737  may be electrically connected to the RFIC  652  through a wire structure inside the substrate  740 . The PMIC  654  may receive a voltage from a main PCB and provide power required for the RFIC  652 . In an embodiment, the antenna structure  510  or  520  may include a protective member  745  disposed to at least partially surround the RFIC  652  and/or PMIC  654 . The protective member  745  may be a protective layer disposed to surround the RFIC  652  and/or the PMIC  654 , and may include a dielectric that is applied and then cured and/or solidified. Embodiments are not limited thereto, and the protective member  745  may include an epoxy resin. In an embodiment, the protection member  745  may be disposed to surround the entirety or a portion of the RFIC  652  and/or the PMIC  654  on the second substrate surface  7402  of the substrate  740 . 
     In various embodiments, the antenna structure  510  or  520  may include a connector  760  to be electrically connected to another printed circuit board (e.g., a flexible printed circuit board (FPCB)) through a connection member. For example, the connection member may include a coaxial cable connector, a board-to-board connector, an interposer, an FRC, or an FPCB. 
     In various embodiments, the antenna structure  510  or  520  may include a conductive shielding layer (e.g., the shielding member  690  in  FIG.  6 A ) stacked on the surface of the protective member  745 . A conductive shielding layer may prevent noise (e.g., DC-DC noise or an interference frequency component) generated in the antenna structure  510  or  520  from spreading to the surroundings. The conductive shielding layer  690  may include a conductive material that is applied to the surface of the protective member  745  by a thin-film deposition method such as sputtering. In an embodiment, the conductive shielding layer  690  may be electrically connected to the ground of the substrate  740 . In some embodiments, the conductive shielding layer  690  may be disposed to extend to at least a portion of the substrate side-surface  7403  including the protection member  745 . In some embodiments, the protection member  745  and/or the conductive shielding layer  690  may be replaced with a shield can that is mounted on the substrate  740 . 
       FIG.  8    is a diagram illustrating a structure in which a first antenna structure  510 , a second antenna structure  520 , and a conductive member  810  are disposed according to various embodiments. 
     Referring to  FIG.  8   , as shown in  FIG.  5    above, an electronic device (e.g., the electronic device  300  in  FIG.  3 A ) may include a first housing (e.g., the first housing  310  in  FIG.  3 A ) including a first support member (e.g., the first support member  3131  in  FIG.  4 C ) facing in a first direction (e.g., the z-axis direction), a first rear cover (e.g., the first rear cover  314  in  FIG.  3 C ) facing in a second direction (e.g., the −z-axis direction) opposite the direction of the first support member  3131 , and a first side member (e.g., the first side member  313  in  FIG.  3 A ) surrounding the space between the first support member  3131  and the first rear cover  314 . The electronic device  300  may include a second housing (e.g., the second housing  320  in  FIG.  3 A ) that is connected to the first housing  310  so as to be folded about a folding axis (the axis A) through a hinge structure (e.g., the hinge structure  340  in  FIG.  3 B ), a second support member (e.g., the support member  3231  in  FIG.  4   ) facing in the first direction (e.g., the z-axis direction), a second rear cover (e.g., the second rear cover  324  in  FIG.  3 C ) facing in a second direction (e.g., the −z-axis direction) opposite the direction of the second support member  3231 , and a second side member (e.g., the second side member  323  in  FIG.  3 A ) surrounding the space between the second support member  3231  and the second rear cover  324 . 
     In various embodiments, the first side member  313  and/or the second side member  323  may include one or more conductive portions  316   a ,  316   b ,  316   c , and  316   d  and/or  326   a ,  326   b ,  326   c , and  326   d  that are electrically separated from each other through one or more separation portions  3161 ,  3162 ,  3163 ,  3164 , and  3165  and/or  3261 ,  3262 ,  3263 ,  3264 , and  3265  formed of polymer. In this case, the one or more conductive portion  316   a ,  316   b ,  316   c , and  316   d  and/or  326   a ,  326   b ,  326   c , and  326   d  may be electrically connected to a wireless communication circuit (e.g., the communication module  190  in  FIG.  1   ) included in the electronic device  300  and may be used as an antenna operating in at least one specified band (e.g., about 400 MHz to about 6 GHz). 
     In various embodiments, the electronic device  300  may include a plurality of antenna structures, for example, a first antenna structure (e.g., the first antenna structure  510  in  FIG.  5   ) and a second antenna structure (e.g., the second antenna structure  520  in  FIG.  5   ). The first antenna structure  510  and the second antenna structure  520  may include an array antenna AR including a plurality of conductive patches (e.g., the plurality of conductive patches  731 ,  733 ,  735 , and  737  in  FIG.  7 B ). In an embodiment, the plurality of conductive patches  731 ,  733 ,  735 , and  737  may be inserted into a substrate (e.g., the substrate  740  in  FIG.  7 B ) or exposed through a first substrate surface (e.g., the first substrate surface  7401  in  FIG.  7 B ) of the substrate  740 . The first antenna structure  510  and the second antenna structure  520  may be configured to operate in a frequency band (e.g., the mmWave band) of about 25 GHz to 45 GHz. 
     In an embodiment, the first antenna structure  510  may be disposed in the inner space of the electronic device  300  such that the first substrate surface  7401  of the substrate  740  faces at least a portion of the first rear cover  314  of the first housing  310 . Because the first substrate surface  7401  of the substrate  740  is disposed to face at least a portion of the first rear cover  314  of the first housing  310 , the first antenna structure  510  may form a first electric field (or a beam pattern or a directional beam) in the first direction (e.g., the −z-axis direction). 
     In an embodiment, the second antenna structure  520  may be disposed in the inner space of the electronic device  300  such that the first substrate surface  7401  of the substrate  740  faces at least a portion of a second side surface (e.g., the second side surface  313   b  in  FIG.  3 A ) of the first housing  310 . Because the first substrate surface  7401  of the substrate  740  is disposed to face at least a portion of the second side surface (e.g., the second side surface  313   b  in  FIG.  3 A ) of the first housing  310 , the second antenna structure  520  may form a second electric field (e.g., or a beam pattern or a directional beam) in a second direction (e.g., the −x-axis direction) perpendicular to the first direction (e.g., the −z-axis direction). 
     In various embodiments, in the case where the first antenna structure  510  forms the first electric field in the first direction (e.g., the −z-axis direction) and where the second antenna structure  520  forms the second electric field in the second direction (e.g., the −x-axis direction), the first electric field formed by the first antenna structure  510  may be reflected by the first rear cover  314 . The reflected first electric field may be scattered by the first rear cover  314  and transmitted to the second antenna structure  520 . Accordingly, near-field interference may occur between the first antenna structure  510  and the second antenna structure  520 . As the near-field interference occurs between the first antenna structure  510  and the second antenna structure  520 , the power density (PD) in a specific space may increase so that a specific absorption rate (SAR) thereof may increase. If the increased SAR exceeds a SAR reference value (e.g., an acceptable value of SAR), a power limit mode to comply with the SAR reference value, for example, a reduction in transmission power of the antenna structures  510  and  520 , may be controlled. However, if the transmission power of the antenna structures  510  and  520  is limited in order to comply with the SAR reference value, the radiation performance of the antenna structures  510  and  520  may be lowered. 
     The electronic device  300  according to various embodiments may include a conductive member  810  (e.g., a periodic structure) for reducing the near-field interference between the first antenna structure  510  and the second antenna structure  520 . In an embodiment, the conductive member  810  may be formed between the first antenna structure  510  and the second antenna structure  520  when the first rear cover  314  is viewed from above. 
     The conductive member  810  according to various embodiments will be described later in detail with reference to  FIGS.  9  and  10   . 
       FIG.  9    is a view illustrating a conductive member  810  (e.g., a periodic structure) provided adjacent to a first antenna structure  510  when a first rear cover  314  is viewed from above according to various embodiments. 
     Referring to  FIG.  9   , the first antenna structure  510  may be disposed in the inner space of an electronic device (e.g., the electronic device  300  in  FIG.  3 A ) to form a first electric field (e.g., a first directional beam) in a second direction (e.g., the −z-axis direction) through a first rear cover (e.g., the first rear cover  314  in  FIG.  3 C ). As shown in  FIG.  7 B  and described above, the first antenna structure  510  may include an array antenna AR including a plurality of conductive patches (e.g., the plurality of conductive patches  731 ,  733 ,  735 , and  737  in  FIG.  7 B ). In an embodiment, the plurality of conductive patches  731 ,  733 ,  735 , and  737  may be disposed to be exposed through a first substrate surface (e.g., the first substrate surface  7401  in  FIG.  7 B ) of a substrate (e.g., the substrate  740  in  FIG.  7 B ) or inserted into the substrate  740 . 
     In an embodiment, the substrate  740  may include a first substrate surface  7401  facing in a first direction (e.g., the −z-axis direction), a second substrate surface (e.g., the second substrate surface  7402  in  FIG.  7 B ) facing in a second direction (e.g., the z-axis direction) opposite the direction of the first substrate surface  7401 , and a substrate side-surface (e.g., the substrate side-surface  7403  in  FIG.  7 B ) surrounding the space between the first substrate surface  7401  and the second substrate surface  7402 . The substrate side-surface  7403  may include a first substrate side-surface (e.g., the first substrate side-surface  7403   a  in  FIG.  7 B ) having a first length, a second substrate side-surface (e.g., the second substrate side-surface  7403   b  in  FIG.  7 B ) extending perpendicularly from the first substrate side-surface  7403   a  and having a second length less than the first length, a third substrate side-surface (e.g., the third substrate side-surface  7403   c  in  FIG.  7 B ) extending parallel to the first substrate side-surface  7403   a  from the second substrate side-surface  7403   b  and having the first length, and a fourth substrate side-surface (e.g., the fourth substrate side-surface  7403   d  in  FIG.  7 B ) extending parallel to the second substrate side-surface  7403   b  from the third substrate side-surface  7403   c  and having the second length. 
     In various embodiments, as shown in  FIG.  8    and described above, the electronic device  300  may include a conductive member  810  (e.g., a periodic structure) for reducing near-field interference between the first antenna structure  510  and the second antenna structure  520 . In an embodiment, the conductive member  810  may be formed between the first antenna structure  510  and the second antenna structure  520  when the first rear cover  314  is viewed from above. 
     In various embodiments, because the conductive member  810  is formed between the first antenna structure  510  and the second antenna structure  520  when the first rear cover  314  is viewed from above, it is possible to reduce the near-field interference between the first antenna structure  510  and the second antenna structure  520  without affecting a beam pattern (e.g., an electric field) radiating from the first antenna structure  510  in the first direction (e.g., the −z-axis direction) and a beam pattern (e.g., an electric field) radiating from the second antenna structure  520  in the second direction (e.g., the −x-axis direction) perpendicular to the first direction (e.g., the −z-axis direction). 
     In various embodiments, the conductive member  810  may be formed on the inner surface of the first rear cover  314 . For example, when a graphite sheet  901  is applied to the inner surface of the first rear cover  314 , the conductive member  810  may be formed in a portion of the graphite sheet  901 . Embodiments are not limited thereto, and the conductive member  810  may be formed of any one of a metal tape, a graphite sheet, a metal sheet, or a conductive ink. For example, the conductive member  810  may be formed by attaching a metal tape to the inner surface of the first rear cover  314 . As another example, in the case where the inner surface of the first rear cover  314  is formed of a graphite sheet and a metal sheet, the conductive member  810  may be formed by etching the metal sheet into a pattern. As another example, the conductive member  810  may be formed by printing conductive ink on the inner surface of the first rear cover  314 . As another example, the conductive member  810  may be formed by scattering a metal material on the inner surface of the first rear cover  314 . 
     In various embodiments, the conductive member  810  may include a first conductive member  910  and a second conductive member  950 . 
     In an embodiment, the first conductive member  910  may be formed adjacent to the third substrate side-surface  7403   c  of the first antenna structure  510  (e.g., formed to be spaced a predetermined distance apart from the third substrate side-surface  7403   c ) when the first rear cover  314  is viewed from above. For example, the first conductive member  910  may be formed in a third direction (e.g., the y-axis direction) perpendicular to the second direction (e.g., the −x-axis direction) from the third substrate side-surface  7403   c  of the first antenna structure  510 . 
     In an embodiment, the first conductive member  910  may include one or more first conductive lines  921 ,  923 , and  925  having a first length and one or more second conductive lines  927  and  929  having a second length different from the first length. For example, the first length may be greater than the second length. 
     In an embodiment, the first conductive member  910  may be formed in an irregular shape, such as a dumbbell shape. For example, the first conductive member  910  may include one or more first conductive lines  921 ,  923 , and  925  having a first length and one or more second conductive lines  927  and  929  having a second length different from the first length, which are alternately formed along the third direction (e.g., the y-axis direction). 
     In an embodiment, the second conductive member  950  may be formed adjacent to the second substrate side-surface  7403   b  perpendicular to the third substrate side-surface  7403   c  of the first antenna structure  510  (e.g., formed to be spaced a predetermined distance apart from the second substrate side-surface  7403   b ) when the first rear cover  314  is viewed from above. For example, the second conductive member  950  may be formed in the second direction (e.g., the −x-axis direction) from the second substrate side-surface  7403   b  of the first antenna structure  510 . In an embodiment, the second substrate side-surface  7403   b  and the third substrate side-surface  7403   c  may be two surfaces adjacent to the second antenna structure  520 , among four side surfaces (e.g., a first substrate side-surface  7403   a , a second substrate side-surface  7403   b , a third substrate side-surface  7403   c , and a fourth substrate side-surface  7403   d ) of the substrate  740 . 
     In an embodiment, the second conductive member  950  may have the same pattern as the first conductive member  910 . For example, the second conductive member  950  may include one or more first conductive lines  921 ,  923 , and  925  having a first length and one or more second conductive lines  927  and  929  having a second length different from the first length. For example, the first length may be greater than the second length. 
     In an embodiment, the second conductive member  950  may be formed in an irregular shape, such as a dumbbell shape. For example, the second conductive member  950  may include one or more first conductive lines  921 ,  923 , and  925  having a first length and one or more second conductive lines  927  and  929  having a second length different from the first length, which are alternately formed along the second direction (e.g., the −x-axis direction). 
     In various embodiments, the first conductive member  910  and the second conductive member  950  may be formed at positions that do not overlap the plurality of conductive patches  731 ,  733 ,  735 , and  737  included in the first antenna structure  510  and the second antenna structure  520  on the inner surface of the first rear cover  314 . For example, the first conductive member  910  may be formed at a position that does not overlap the first antenna structure  510  and the second antenna structure  520  on the inner surface of the first rear cover  314  when the third side surface (e.g., the third side surface  313   c  in  FIG.  3 A ) of the first side member (e.g., the first side member  313  in  FIG.  3 A ) of the first housing  310  is viewed from the outside. The second conductive member  950  may be formed at a position that does not overlap the first antenna structure  510  and the second antenna structure  520  on the inner surface of the first rear cover  314  when the first side surface (e.g., the first side surface  313   a  in  FIG.  3 A ) extending perpendicularly to the third side surface  313   c  of the first side member  313  of the first housing  310  is viewed from the outside. 
     Although it has been described in  FIG.  9    according to various embodiments that the conductive members  910  and  950  include three first conductive lines  921 ,  923 , and  925  and two second conductive lines  927  and  929 , embodiments are not limited thereto, and different numbers of first and second conductive lines may be provided in the first and second conductive members  910  and  950 . 
       FIG.  10    is a diagram illustrating a conductive member (e.g., a periodic structure)  910  or  950  according to various embodiments. 
     Referring to  FIG.  10   , as described with reference to  FIG.  9   , the conductive member (e.g., the first conductive member  910  or the second conductive member  950 ) may be formed in the space between a first antenna structure (e.g., the antenna structure  510  in  FIG.  5   ) and a second antenna structure (e.g., the second antenna structure  520  in  FIG.  5   ) when a first rear cover (e.g., the first rear cover  314  in  FIG.  3 C ) is viewed from above. For example, when the first rear cover  314  is viewed from above, the first conductive member  910  may be formed adjacent to the third substrate side-surface  7403   c  of the first antenna structure  510 , and the second conductive member  950  may be formed adjacent to the second substrate side-surface  7403   b  of the first antenna structure  510 . 
     In an embodiment, the conductive member  910  or  950  may include one or more first conductive lines  921 ,  923 , and  925  having a first length  1020  and one or more second conductive lines  927  and  929  having a second length  1030  less than the first length  1020 , which are alternately formed. 
     In an embodiment, the first length  1020  of the one or more first conductive lines  921 ,  923 , and  925  may be a length corresponding to ½ of the wavelength λ of a first frequency band. The first frequency band may include a band of about 28 GHz. For example, the first length  1020  corresponding to ½ of the wavelength λ of the first frequency band may be about 5 to 6 mm. However, the first length is not limited thereto. 
     In an embodiment, the second length  1030  of the one or more second conductive lines  927  and  929  may be a length corresponding to ½ of the wavelength λ of a second frequency band. The second frequency band may include a band of about 39 GHz. The second length  1030  corresponding to ½ of the wavelength λ of the second frequency band may be about 3 to 4 mm. However, the second length is not limited thereto. 
     Although it has been described in various embodiments that the first length  1020  of the one or more first conductive lines  921 ,  923 , and  925  and the second length  1030  of the one or more second conductive lines  927  and  929  are ½ of the wavelengths λ of the first and second frequency bands, respectively, embodiments are not limited thereto. In another embodiment, the length of the at least one first conductive line  921 ,  923 , or  925  may be determined such that the perimeter of the at least one first conductive line  921 ,  923 , or  925  corresponds to a specified multiple (e.g., about 0.1 to 1 times) of the wavelength λ of a first frequency band (e.g., about 28-GHz band). The length of the at least one second conductive line  927  or  929  may be determined such that the perimeter of the at least one second conductive line  927  or  929  corresponds to a specified multiple (e.g., about 0.1 to 1 times) of the wavelength λ of a second frequency band (e.g., about 39 GHz band). 
     In various embodiments, the at least one first conductive line  921 ,  923 , or  925  having the first length  1020  and the at least one second conductive line  927  or  929  having the second length  1030  different from the first length  1020  may be formed to have the same width  1010  (e.g., 0.4 mm). The at least one first conductive line  921 ,  923 , or  925  having the first length  1020  and the at least one second conductive line  927  or  929  having the second length  1030  different from the first length  1020  may be alternately formed at a predetermined interval  1040  (e.g., about 0.4 mm). 
     In various embodiments, the number of the one or more first conductive lines having the first length  1020  may exceed the number of the one or more second conductive lines having the second length  1030 . For example, the first length  1020  of the at least one first conductive line  921 ,  923 , or  925  may correspond to ½ of the wavelength λ of the first frequency band (e.g., about 28 GHz band). The second length  1030  of the at least one second conductive line  927  or  929  may correspond to ½ of the wavelength λ of the second frequency band (e.g., about 39 GHz band). Near-field coupling may occur more in the first frequency band (e.g., about 28 GHz band) that is a lower frequency band among the first frequency band (e.g., about 28 GHz band) and the second frequency band (e.g., about 39 GHz band). Because near-field coupling may occur more in the first frequency band (e.g., about 28 GHz band), which is a lower frequency band, in order to block the same, the at least one first conductive line having a length corresponding to ½ of the wavelength λ of the first frequency band (e.g., about 28 GHz band) may be formed such that the number of the first conductive lines exceeds the number of the one or more second conductive lines having the second length  1030 . Embodiments are not limited thereto, the number of the one or more first conductive lines having the first length  1020  may be the same as the number of the one or more second conductive lines having the second length  1030 . 
     The sizes of the at least one first conductive line  921 ,  923 , or  925  and the at least one second conductive line  927  or  929 , the separation distance between the conductive lines, and/or the positions where the conductive lines are disposed, which have been described above, are provided as examples, and embodiments are not limited to the above-described sizes, separation distance, and/or positions. For example, the sizes, separation distance, and/or positions of the at least one first conductive line  921 ,  923 , or  925  and at least one second conductive line  927  or  929  formed between the respective antenna structures  510  and  520  to increase the radiation efficiency of the antenna structure  510  and  520  may vary. 
     In various embodiments, Table 1 below shows a near-field result between a comparative example and an embodiment of the disclosure. As can be seen, near-field interference between the first antenna structure  510  and the second antenna structure  520  may be reduced by disposing the conductive member  810  on the inner surface of the first rear cover  314  according to an embodiment of the disclosure, thereby reducing the reduction in transmission power (i.e., allowing for increased transmission power) of antenna structures  510  and  520 . Accordingly, the radiation performance of the first antenna structure  510  may be improved by about 0.9 dB, and the radiation performance of the second antenna structure  520  may be improved by about 0.3 dB. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 1 
               
               
                   
                   
               
               
                   
                 First antenna structure 
                 Second antenna structure 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 Comparative 
                 linear 
                 0.7762 
                 0.7079 
               
               
                 example 
                 dB 
                 −1.10 
                 −1.50 
               
               
                 Embodiment of 
                 linear 
                 0.83 
                 0.87 
               
               
                 disclosure 
                 dB 
                 −0.80 
                 −0.60 
               
            
           
           
               
               
               
            
               
                 Comparison result 
                 0.3 dB improved 
                 0.9 dB improved 
               
               
                   
               
            
           
         
       
     
     In various embodiments, Table 2 below shows a far-field result between a comparative example and an embodiment of the disclosure, and it can be seen that the radiation performance is equivalent within about 0.3 dB in the first frequency band (e.g., about 28 GHz band) and the second frequency band (e.g., about 39 GHz band) between a comparative example and an embodiment of the disclosure in which the conductive member  810  is disposed on the inner surface of the first rear cover  314 . In other words, in the case where the conductive member  810  is disposed on the inner surface of the first rear cover  314  according to the disclosure, it is possible to reduce the near-field interference between the first antenna structure  510  and the second antenna structure  520  without affecting the far-field of the first antenna structure  510  and the second antenna structure  520 . 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 2 
               
               
                   
                   
               
               
                   
                 First frequency 
                 Second frequency 
               
               
                   
                 band (e.g., about 
                 band (e.g., about 
               
               
                   
                 28 GHz band) 
                 39 GHz band) 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 Comparative 
                 CDF (cumulative 
                 16.2 dB 
                 14.6 dB 
               
               
                 example 
                 distribution 
               
               
                   
                 function) 20 
               
               
                   
                 CDF50 
                 20.1 dB 
                 18.8 dB 
               
               
                   
                 peak 
                 27.6 dB 
                 25.4 dB 
               
               
                 Embodiment of 
                 CDF20 
                 16.3 dB 
                 14.7 dB 
               
               
                 disclosure 
                 CDF50 
                 20.4 dB 
                 19.1 dB 
               
               
                   
                 peak 
                 27.7 dB 
                 24.8 dB 
               
               
                   
               
            
           
         
       
     
       FIG.  11    is a partial-cross-sectional view of an electronic device  300  taken along line B-B′ in  FIG.  8    according to various embodiments. 
     Reference numeral  1110  in  FIG.  11    according to various embodiments indicates a stacked structure of an electronic device (e.g., the electronic device  300  in  FIG.  3 A ). 
     Referring to  FIG.  11   , the electronic device  300  may include a first housing (e.g., the first housing  310  in  FIG.  3 A ) including a first support member (e.g., the first support member  3131  in  FIG.  4 C ) facing in a first direction (e.g., the z-axis direction) and a first rear cover (e.g., the first rear cover  314  in  FIG.  3 C ) facing in a second direction (e.g., the −z-axis direction) opposite the direction of the first support member  3131 . 
     In an embodiment, the electronic device  300  may include a main printed circuit board (PCB)  1125  (e.g., the first substrate assembly  361  in  FIG.  4 C ) disposed in a space between the first support member  3131  and the first rear cover  314 . The electronic device  300  may include a flexible printed circuit board (FPCB)  1130  disposed on the main printed circuit board  1125  (e.g., in the −z-axis direction). The electronic device  300  may include a first antenna structure  510  disposed in a space between the flexible printed circuit board  1130  and the first rear cover  314 . The first antenna structure  510  may include a plurality of conductive patches  1140  (e.g., the plurality of conductive patches  731 ,  733 ,  735 , and  737  in  FIG.  7 B ) inserted into a substrate (e.g., the substrate  740  in  FIG.  7 B ) of the first antenna structure  510  so as to be exposed through a first substrate surface (e.g., the first substrate surface  7401  in  FIG.  7 B ) of the substrate  740 . A protective member  745  for protecting various components (e.g., an RFIC (e.g., the RFIC  652  in  FIG.  6 A ) and/or a PMIC (e.g., the PMIC  654  in  FIG.  6 A )) on the first antenna structure  510  may be provided under the first antenna structure  510  (e.g., in the z-axis direction). A graphite sheet  901  may be applied to the inner surface of the first rear cover  314 . A gap  1145  may be formed between the plurality of conductive patches  1140  and the first rear cover  314 . 
     In an embodiment, a conductive member (e.g., the conductive member  810  in  FIG.  8   ) may be formed on the inner surface of the first rear cover  314 . For example, the conductive member denoted by reference numeral  1110  represents the first conductive member (e.g., the first conductive member  910  in  FIG.  9   ) taken along line B-B′ in  FIG.  3 C . For example, the first conductive member  910  may be formed to face in the first direction (e.g., the y-axis direction) from the third substrate side-surface  7403   c  of the first antenna structure  510 . 
     In an embodiment, the conductive member  810  may be formed on the inner surface of the first rear cover  314 . For example, in the case where a graphite sheet  901  is applied to the inner surface of the first rear cover  314 , the conductive member  810  may be formed in a portion of the graphite sheet  901 . Embodiments are not limited thereto, and the conductive member  810  may be formed of any one of a metal tape, a graphite sheet, a metal sheet, or a conductive ink. For example, the conductive member  810  may be formed by attaching a metal tape (e.g., a patch including a conductive member) to the inner surface of the first rear cover  314 . As another example, in the case where the inner surface of the first rear cover  314  is formed of a graphite sheet and a metal sheet, the conductive member  810  may be formed by etching the metal sheet into a pattern. As another example, the conductive member  810  may be formed by printing conductive ink on the inner surface of the first rear cover  314 . As another example, the conductive member  810  may be formed by scattering a metal material on the inner surface of the first rear cover  314 . 
     In an embodiment, the first conductive member  910  may be formed at a position that does not overlap the first antenna structure  510  and the second antenna structure  520  on the inner surface of the first rear cover  314  when the third side surface (e.g., the third side surface  313   c  in  FIG.  3 A ) of the first side member (e.g., the first side member  313  in  FIG.  3 A ) of the first housing  310  is viewed from the outside. For example, the first conductive member  910  may be formed at a position that does not overlap the first antenna structure  510  and the second antenna structure  520  in the upper portion (e.g., the −z-axis direction) of first antenna structure  510 . The second conductive member  950  may be formed at a position that does not overlap the first antenna structure  510  and the second antenna structure  520  on the inner surface of the first rear cover  314  when the first side surface (e.g., the first side surface  313   a  in  FIG.  3 A ) extending perpendicularly to the third side surface  313   c  of the first side member  313  of the first housing  310  is viewed from the outside. 
       FIG.  12    is a diagram  1200  illustrating radiation patterns according to whether or not a conductive member  910  or  950  is formed on an inner surface of a first rear cover  314  corresponding to a space between antenna structures  510  and  520  according to various embodiments. 
     Diagram  1210  in  FIG.  12    is a diagram showing a radiation pattern of an electronic device in which conductive members (e.g., the first conductive member  910  and the second conductive member  950 ) are not formed on the inner surface of a first rear cover  314  corresponding to a space between antenna structures (e.g., the first antenna structure  510  and the second antenna structure  520 ), and diagram  1250  is a diagram showing a radiation pattern of an electronic device in which conductive members  910  and  950  are formed on the inner surface of the first rear cover  314  corresponding to the space between the antenna structures  510  and  520 . 
     Referring to  FIG.  12   , in the case where the conductive members  910  and  950  are not formed on the inner surface of the first rear cover  314  corresponding to the space between the antenna structures  510  and  520  (e.g., as shown in the diagram  1210 ), a beam pattern (e.g., an electric field) radiating from the first antenna structure  510  in a first direction (e.g., the −z-axis direction) and a beam pattern (e.g., an electric field) radiating from the second antenna structure  520  in a second direction (e.g., the −x-axis direction) perpendicular to the first direction (e.g., the −z-axis direction) may be affected (e.g., the region  1215 ), but in the case where the conductive members  910  and  950  are formed on the inner surface of the first rear cover  314  corresponding to the space between the antenna structures  510  and  520  (e.g., as shown in the diagram  1250 ), a beam pattern (e.g., an electric field) radiating from the first antenna structure  510  in the first direction (e.g., the −z-axis direction) and a beam pattern (e.g., an electric field) radiating from the second antenna structure  520  in the second direction (e.g., the −x-axis direction) perpendicular to the first direction (e.g., the −z-axis direction) may not be affected (e.g., the region  1255 ). 
     In  FIGS.  5  to  12    according to various embodiments, when the first rear cover  314  is viewed from above, conductive members (e.g., the first conductive member  910  and the second conductive member  950 ) may be formed on the inner surface of the first rear cover  314  corresponding to the space between the antenna structures (e.g., the first antenna structure  510  and the second antenna structure  520 ), thereby reducing near-field interference between the first antenna structure  510  and the second antenna structure  520  without affecting a beam pattern (e.g., an electric field) radiating from the first antenna structure  510  in the first direction (e.g., the −z-axis direction) and a beam pattern (e.g., an electric field) radiating from the second antenna structure  520  in the second direction (e.g., the −x-axis direction) perpendicular to the first direction (e.g., the −z-axis direction). In an embodiment, as the near-field interference between the antenna structures  510  and  520  is reduced by the conductive members  910  and  950 , the reduction in transmission power of the antenna structures  510  and  520  may also be reduced, thereby improving the radiation performance of the antenna structures  510  and  520 . 
     An electronic device (e.g., the electronic device  300  in  FIG.  3 A ) according to various embodiments may include a first housing (e.g., the first housing  310  in  FIG.  3 A ) including a first support member (e.g., the first support member  3131  in  FIG.  4 C ) facing in a first direction (e.g., the z-axis direction), a first rear cover (e.g., the first rear cover  314  in  FIG.  3 C ) facing in a second direction (e.g., the −z-axis direction) opposite the direction of the first support member  3131 , and a first side member (e.g., the first side member  313  in  FIG.  3 A ) surrounding a space between the first support member  3131  and the first rear cover  314 , a second housing (e.g., the second housing  320  in  FIG.  3 A ) connected to the first housing  310  so to be folded about a folding axis (the axis A) using a hinge structure (e.g., the hinge structure  340  in  FIG.  3 B ) and including a second support member (e.g., the second support member  3231  in  FIG.  4   ) facing in the first direction (e.g., the z-axis direction), a second rear cover (e.g., the second rear cover  324  in  FIG.  3 C ) facing in the second direction (e.g., the −z-axis direction) opposite the direction of the second support member  3231 , and a second side member (e.g., the second side member in  FIG.  3 A ) surrounding a space between the second support member  3231  and the second rear cover  324 , a first antenna structure  510  disposed in a space between the first support member  3131  and the first rear cover  314  to form a first electric field in the second direction (e.g., the −z-axis direction) so as to pass through the first rear cover  314 , a second antenna structure  520  disposed near the first antenna structure  510  in a space between the first support member  3131  and the first rear cover  314  to form a second electric field in a third direction (e.g., the −x-axis direction) perpendicular to the second direction (e.g., the −z-axis direction) such that the second electric field may pass through the first side member  313 , and a conductive member (e.g., the conductive member  810  in  FIG.  8   ) disposed between the first antenna structure  510  and the second antenna structure  520 . 
     In various embodiments, the conductive member  810  may be formed on an inner surface of the first rear cover  314 . 
     In various embodiments, the conductive member  810  may include a first conductive member (e.g., the first conductive member  910  in  FIG.  9   ) and a second conductive member (e.g., the second conductive member  950  in  FIG.  9   ). 
     In various embodiments, the first conductive member  910  may be formed near a first side surface (e.g., the third substrate side-surface  7403   c  in  FIG.  9   ) of the first antenna structure  510  to face in a fourth direction (e.g., the y-axis direction) perpendicular to the third direction (e.g., the −x-axis direction) when the first rear cover  314  is viewed from above, and the second conductive member  950  may be formed near a second side surface (e.g., the second substrate side-surface  7403   b  in  FIG.  9   ) perpendicular to the first side surface (e.g., the third substrate side-surface  7403   c  in  FIG.  9   ) of the first antenna structure  510  to face in the third direction (e.g., the −x-axis direction) when the first rear cover  314  is viewed from above. 
     In various embodiments, the first conductive member  910  may be formed at a position that does not overlap the first antenna structure  510  and the second antenna structure  520  when a first side surface (e.g., the third side surface  313   c  in  FIG.  3 A ) of the first side member  313  is viewed from the outside, and the second conductive member  950  may be formed at a position that does not overlap the first antenna structure  510  and the second antenna structure  520  when a second side surface (e.g., the first side surface  313   a  in  FIG.  3 A ) extending vertically from the first side surface (e.g., the third side surface  313   c  in  FIG.  3 A ) of the first side member  313  is viewed from the outside. 
     In various embodiments, the first conductive member  910  may include at least one first conductive line (e.g., the first conductive line  921 ,  923 , or  925  in  FIG.  9   ) having a first length and at least one second conductive line (e.g., the second conductive line  927  or  929  in  FIG.  9   ) having a second length, and the first length may be different from the second length. 
     In various embodiments, the at least one first conductive line  921 ,  923 , or  925  having the first length and the at least one second conductive line  927  or  929  having the second length may have the same width. 
     In various embodiments, the first conductive member  910  may be configured such that the at least one first conductive line  921 ,  923 , or  925  having the first length and the at least one second conductive line  927  or  929  having the second length are alternately formed at a predetermined interval. 
     In various embodiments, the second conductive member  950  may include at least one first conductive line (e.g., the first conductive line  921 ,  923 , or  925  in  FIG.  9   ) having a first length and at least one second conductive line (e.g., the second conductive line  927  or  929  in  FIG.  9   ) having a second length, and the first length may be different from the second length. 
     In various embodiments, each of the at least one first conductive lines  921 ,  923 , and  925 , as well as each of the at least one second conductive lines  927  and  929  may have the same width. 
     In various embodiments, the second conductive member  950  may be configured such that the at least one first conductive line  921 ,  923 , or  925  having the first length and the at least one second conductive line  927  or  929  having the second length are alternately formed at a predetermined interval. 
     In various embodiments, the first length may correspond to ½ of the wavelength λ of a first frequency band, and the second length may correspond to ½ of the wavelength λ of a second frequency band. 
     In various embodiments, the first frequency band may include a band of about 28 GHz, and the second frequency band may include a band of about 39 GHz. 
     In various embodiments, the number of the at least one first conductive line  921 ,  923 , or  925  having the first length may be equal to or greater than the number of the at least one second conductive line  927  or  929  having the second length. 
     In various embodiments, the first length may be configured such that the perimeter of the at least one first conductive line  921 ,  923 , or  925  corresponds to a specified multiple of the wavelength λ of a first frequency band, and the second length may be configured such that the perimeter of the at least one second conductive line  927  or  929  corresponds to a specified multiple of the wavelength λ of a second frequency band. 
     In various embodiments, the conductive member  810  may be formed of any one of a metal tape, a graphite sheet, a metal sheet, a conductive ink, or a metal material. 
     In various embodiments, the conductive member  810  may be formed by attaching the metal tape to the inner surface of the first rear cover  314 , by etching the metal sheet into a pattern in the case where the inner surface of the first rear cover  314  is formed of the graphite sheet and the metal sheet, by printing the conductive ink on the inner surface of the first rear cover  314 , or by scattering the metal material on the inner surface of the rear cover  314 . 
     In various embodiments, the first antenna structure  510  and the second antenna structure  520  may include a plurality of conductive patches (e.g., the plurality of conductive patches  731 ,  733 ,  735 , and  737  in  FIG.  7 B ) disposed on a substrate (e.g., the substrate  740  in  FIG.  7 B ). 
     In various embodiments, the first antenna structure  510  may be configured such that a first substrate surface (e.g., the first substrate surface  7401  in  FIG.  7 B ) of the substrate  740  through which the plurality of conductive patches  731 ,  733 ,  735 , and  737  is exposed faces at least a portion of the first rear cover  314 , and may thereby form the first electric field in the second direction (e.g., the −z-axis direction) so as to pass through the first rear cover  314 . 
     In various embodiments, the second antenna structure  520  may be configured such that a first substrate surface  7401  of the substrate  740  through which the plurality of conductive patches  731 ,  733 ,  735 , and  737  is exposed faces one side surface (e.g., the second side surface  131   b  in  FIG.  3 A ) of the first housing  310 , and may thereby form the second electric field in the third direction (e.g., the −x-axis direction), which may pass through the first side member  313 . 
     In accordance with an aspect of the disclosure, an electronic device includes: a display configured to emit light in a first direction; a rear cover facing a second direction opposite the first direction; a side structure that extends from the display to the rear cover; a first antenna structure provided between the rear cover and the display, and configured to form a first electric field in the second direction; a second antenna structure between the rear cover and the display, and configured to form a second electric field in a third direction perpendicular to the first direction; and a conductive structure provided between the first antenna structure and the second antenna structure. 
     The first antenna structure may include a plurality of first conductive patches arranged along the third direction, and the second antenna structure may include a plurality of second conductive patches arranged along a fourth direction perpendicular to the first direction and the third direction. 
     The conductive structure may include a first conductive structure and a second conductive structure. The first conductive structure may include: a plurality of first conductive lines having a first length along the fourth direction; and a plurality of second conductive lines having a second length along the fourth direction, and alternatively provided with the plurality of first conductive lines. The second conductive structure may include: a plurality of third conductive lines having a third length along the third direction; and a plurality of fourth conductive lines having a fourth length along the third direction, and alternatively provided with the plurality of third conductive lines. 
     The first length may be different from the second length, the first length may correspond to the third length, and the second length may correspond to the fourth length. 
     The first length may correspond to ½ of a first wavelength (λ) of a first frequency band, and the second length may correspond to ½ of a second wavelength (λ) of a second frequency band. 
     The side structure may include a plurality of conductive portions and a plurality of insulating portions between the plurality of conductive portions, and the plurality of conductive portions may form a third antenna structure configured to operate in a third frequency band that is lower than the first frequency band and the second frequency band. 
     In accordance with an aspect of the disclosure, a method of controlling an electronic device including a display configured to emit light in a first direction; a rear cover facing a second direction opposite the first direction; a side structure that extends from the display to the rear cover; a first antenna structure and a second antenna structure provided between the rear cover and the display; and a conductive structure provided between the first antenna structure and the second antenna structure, is provided. The method includes: controlling the display to provide a graphical user interface; controlling the first antenna structure to form a first electric field that is emitted through the rear cover; controlling the second antenna structure to form a second electric field that is emitted through the side structure; and electromagnetically shielding the first electric field from the second electric field using the conductive structure. 
     While aspects of embodiments have been particularly shown and described, it will be understood that various changes in form and details may be made therein without departing from the spirit and scope of the following claims.