Patent Publication Number: US-2022216588-A1

Title: Electronic device having connector

Description:
FIELD 
     The present disclosure relates to an electronic device having a connector, and one detailed implementation relates to an electronic device having a connector for connecting antennas and an RFIC. 
     BACKGROUND ART 
     Electronic devices may be divided into mobile/portable terminals and stationary terminals according to mobility. Also, the electronic devices may be classified into handheld types and vehicle mount types according to whether or not a user can directly carry. 
     Functions of electronic devices are diversifying. Examples of such functions include data and voice communications, capturing images and video via a camera, recording audio, playing music files via a speaker system, and displaying images and video on a display. Some electronic devices include additional functionality which supports electronic game playing, while other terminals are configured as multimedia players. Specifically, in recent time, mobile terminals can receive broadcast and multicast signals to allow viewing of video or television programs 
     As it becomes multifunctional, an electronic device can be allowed to capture still images or moving images, play music or video files, play games, receive broadcast and the like, so as to be implemented as an integrated multimedia player. 
     Efforts are ongoing to support and increase the functionality of electronic devices. Such efforts include software and hardware improvements, as well as changes and improvements in the structural components. 
     In addition to those attempts, the electronic devices provide various services in recent years by virtue of commercialization of wireless communication systems using an LTE communication technology. In the future, it is expected that a wireless communication system using a 5G communication technology will be commercialized to provide various services. Meanwhile, some of LTE frequency bands may be allocated to provide 5G communication services. 
     In this regard, electronic devices may be configured to provide 5G communication services in various frequency bands. Recently, attempts have been made to provide 5G communication services using a Sub-6 band under a 6 GHz band. In the future, it is also expected to provide 5G communication services by using a millimeter-wave (mmWave) band in addition to the Sub-6 band for a faster data rate. 
     Meanwhile, an electronic device may include a connector for connecting antennas and a transceiver circuit, that is, an RFIC. In this regard, the related art connector has a problem in that insertion loss greatly increases when vertically (perpendicularly) connecting antennas and a transceiver circuit in a millimeter-wave band. 
     In particular, when a length of vertical vias increases as the antennas and the transceiver circuit are vertically connected in the millimeter-wave band, there is a problem in that insertion loss increases due to radiation by the vertical vias. 
     DISCLOSURE 
     Technical Problem 
     One aspect of the present disclosure is to solve the aforementioned problems and other drawbacks. Another aspect of the present disclosure is to provide a connector capable of reducing insertion loss when antennas and a transceiver circuit are connected vertically in a millimeter-wave band, and an electronic device having the same. 
     Still another aspect of the present disclosure is to provide a connector capable of reducing insertion loss due to radiation by vertical vias when a length of the vertical vias increases due to a vertical connection between antennas and a transceiver circuit in a millimeter-wave band, and an electronic device having the same. 
     Technical Solution 
     In order to achieve these and other advantages and in accordance with the purpose of this specification, as embodied and broadly described herein, there is provided an electronic device a first multilayered printed circuit board (PCB) including a transceiver circuit, a second multilayered PCB including antennas, and a connector to connect the first multilayered PCB and the second multilayered PCB, whereby insertion loss can be reduced when vertically connecting the antennas and the transceiver circuit in a millimeter-wave band. 
     In one implementation, each of the first and second multilayered PCBs may include ground patterns constituting a ground vertical-connection between different layers. 
     In one implementation, the ground patterns each may include ground pads on which ground vias for the ground vertical-connection are disposed, and a ground line connecting the ground pads. 
     In one implementation, the ground patterns may be formed on the same position of different layers of the first and second multilayered PCBs, and a window region from which a metal pattern is removed may be formed between adjacent ground patterns on the same position of the different layers of the first and second multilayered PCBs. 
     In one implementation, the ground pattern may be provided in plurality to correspond to a plurality of ground terminals of the connector, and a signal transmission line may be disposed between the plurality of ground patterns. A length of a signal line of the signal transmission line may be the same as a length of the ground pad of the ground pattern. 
     In one implementation, the ground pad may include first and second circular ground pads each having the same circular shape as that of the ground via, and each of the first and second circular ground pads may be connected to the ground line having a width narrower than a diameter of the ground pad. 
     In one implementation, the first and second multilayered PCBs each may include a signal transmission line constituting a vertical connection for a signal transmission between different layers. 
     In one implementation, the signal transmission line may include a signal pad on which signal vias for the vertical connection for the signal transmission are disposed, and a signal line connected to the signal pad, having a width narrower than a diameter of the signal pad, and extending by a predetermined length. 
     In one implementation, the electronic device may further include a transceiver circuit configured to receive signals from the antennas through different signal terminals of the connector or transmit signals to the antennas through the different signal terminals of the connector. 
     In one implementation, the electronic device may further include a baseband processor to control a first reception signal and a second reception signal received from the antennas to the transceiver circuit through the different signal terminals of the connector. 
     In one implementation, the electronic device may further include a baseband processor to control a first reception signal and a second reception signal received from the antennas to the transceiver circuit through the different signal terminals of the connector. 
     In one implementation, the baseband processor may control the transceiver circuit to perform Multi Input Multi Output (MIMO) by simultaneously receiving the first reception signal and the second reception signal for a specific time interval using horizontal/vertical (HN) polarization of the antennas. 
     In one implementation, each of a first connecting portion connected to the first multilayered PCB and a second connecting portion connected to the second multilayered PCB may include eight terminals. The baseband processor may control the transceiver circuit to perform MIMO through a first array antenna including four antennas connected four of the eight terminals of the second connecting portion and a second array antenna including four antennas connected to remaining four terminals of the second connecting portion. 
     A connector device according to another aspect of the present disclosure may be provided. The connector device may include a first connecting portion having a plurality of terminals to be connected to a first multilayered printed circuit board (PCB), and a second connecting portion having a plurality of terminals to be connected to a second multilayered PCB. Signal transmission lines of the first multilayered PCB and the second multilayered PCB may be vertically connected to each other by the first connecting portion and the second connecting portion, to transmit Radio Frequency (RF) signals. 
     In one implementation, a transceiver circuit may be disposed on the first multilayered PCB, and antennas may be disposed on the second multilayered PCB. In this case, each of the first and second multilayered PCBs may include ground patterns constituting a ground vertical-connection between different layers. 
     In one implementation, the ground patterns each may include ground pads on which ground vias for the ground vertical-connection are disposed, and a ground line connecting the ground pads. 
     In one implementation, the ground patterns may be formed on the same position of different layers of the first and second multilayered PCBs. A window region from which a metal pattern is removed may be formed between adjacent ground patterns on the same position of the different layers of the first and second multilayered PCBs. 
     In one implementation, the ground pattern may be formed in plurality to correspond to a plurality of ground terminals of the connector. A signal transmission line may be disposed between the plurality of ground patterns. A length of a signal line of the signal transmission line may be the same as a length of the ground pad of the ground pattern. 
     In one embodiment, the ground pad may include first and second circular ground pads having the same circular shape as that of the ground via. In this case, each of the first and second circular ground pads may be connected to the ground line having a width narrower than a diameter of the ground pad. 
     In one implementation, the first and second multilayered PCBs each may include a signal transmission line constituting a vertical connection for a signal transmission between different layers. 
     In one implementation, the signal transmission line may include a signal pad on which signal vias for the vertical connection for the signal transmission are disposed, and a signal line connected to the signal pad, having a width narrower than a diameter of the signal pad, and extending by a predetermined length. 
     Advantageous Effects 
     According to at least one implementation of the present disclosure, when vertically connecting antennas and a transceiver circuit in a millimeter-wave band, a connector that is capable of reducing insertion loss by optimizing circuit patterns around vertical vias can be provided. 
     In addition, according to at least one implementation of the present disclosure, a connector that is capable of reducing insertion loss due to radiation by vertical vias when a length of the vertical vias increases due to a vertical connection between antennas and a transceiver circuit in a millimeter-wave band, and an electronic device having the same can be provided. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1A  is a block diagram of an electronic device in accordance with one implementation of the present disclosure, and  FIGS. 1B and 1C  are conceptual views illustrating one example of the electronic device, viewed from different directions. 
         FIG. 2  is a block diagram illustrating a configuration of a wireless communication unit of an electronic device operable in a plurality of wireless communication systems according to the present disclosure. 
         FIG. 3A  is a conceptual view illustrating a structure in which a transceiver circuit and antennas are directly connected without a separate connector.  FIG. 3B  is a conceptual view illustrating a structure in which a transceiver circuit and antennas are connected to a connector in accordance with the present disclosure. 
         FIG. 4A  is a view illustrating insertion loss (IL) and voltage standing wave ratio (VSWR) when the related art connector is used in the same frequency band as a millimeter-wave band. 
         FIG. 4B  is a view illustrating insertion loss (IL) of a multilayered PCB connector in accordance with the present disclosure. 
         FIG. 5  is a conceptual view illustrating a connector coupling structure for vertically connecting an RFIC PCB and an antenna PCB each having a plurality of layers in accordance with the present disclosure. 
         FIG. 6A  is a view showing comparison results between a coplanar waveguide (CPW) structure based on a circular ground pad according to the present disclosure and the related art CPW structure. 
         FIG. 6B  is a view illustrating a PCB structure according to presence or absence of vias and ground patterns when ground pins are connected according to the present disclosure. 
         FIGS. 6C and 6D  are views illustrating simulation results according to presence or absence of vias and ground patterns according to the present disclosure. 
         FIG. 7  is a conceptual view illustrating a connection between an RFIC PCB and each terminal of an RFIC according to the present disclosure and a conceptual view of a circuit structure according to the connection. 
         FIG. 8  is a planar view illustrating each of Layer 4 and Layer 6 of an RFIC PCB according to the present disclosure, which illustrates a structure in which Layer 4 and Layer 6 are connected by signal vias and ground vias. 
         FIG. 9  is a view illustrating a connected state between Layer 4 of an RFIC PCB and connector terminals and a configuration in which the connector is connected to Layers 4 and 6 of the RFIC PCB, according to the present disclosure. 
         FIG. 10  is a planar view illustrating each of Layers 4, 5, and 6 of an RFIC PCB according to the present disclosure, which illustrates a structure in which Layers 4 to 6 are connected by signal vias and ground vias. 
         FIG. 11  is a planar view illustrating all of layers of an RFIC PCB according to the present disclosure. 
         FIG. 12  is a planar view illustrating each of a plurality of layers of an antenna PCB according to the present disclosure. 
         FIG. 13A  is a view illustrating a configuration related to optimizing a length of a signal transmission line inside a multilayered PCB connected to a connector according to the present disclosure. 
         FIG. 13B  is a view illustrating comparison results between a case of an optimized arrangement of a ground region and vias inside a multilayered PCB according to the present disclosure ((a) of  FIG. 13B ) and a case of a non-optimized arrangement ((b) of  FIG. 13B ). 
         FIGS. 13C and 13D  are graphs showing simulation results according to the case of the optimized arrangement of the ground region and the vias inside the multilayered PCB according to the present disclosure and the case of the non-optimized arrangement. 
         FIG. 14  is a view illustrating a configuration related to an optimization of a window region, from which a metal pattern is removed, in a multilayered PCB connected to a connector according to the present disclosure. 
     
    
    
     MODES FOR CARRYING OUT THE PREFERRED IMPLEMENTATIONS 
     Description will now be given in detail according to exemplary embodiments disclosed herein, with reference to the accompanying drawings. For the sake of brief description with reference to the drawings, the same or equivalent components may be provided with the same or similar reference numbers, and description thereof will not be repeated. In general, a suffix such as “module” and “unit” may be used to refer to elements or components. Use of such a suffix herein is merely intended to facilitate description of the specification, and the suffix itself is not intended to give any special meaning or function. In describing the present disclosure, if a detailed explanation for a related known function or construction is considered to unnecessarily divert the gist of the present disclosure, such explanation has been omitted but would be understood by those skilled in the art. The accompanying drawings are used to help easily understand the technical idea of the present disclosure and it should be understood that the idea of the present disclosure is not limited by the accompanying drawings. The idea of the present disclosure should be construed to extend to any alterations, equivalents and substitutes besides the accompanying drawings. 
     It will be understood that although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are generally only used to distinguish one element from another. 
     It will be understood that when an element is referred to as being “connected with” another element, the element can be connected with the another element or intervening elements may also be present. In contrast, when an element is referred to as being “directly connected with” another element, there are no intervening elements present. 
     A singular representation may include a plural representation unless it represents a definitely different meaning from the context. 
     Terms such as “include” or “has” are used herein and should be understood that they are intended to indicate an existence of several components, functions or steps, disclosed in the specification, and it is also understood that greater or fewer components, functions, or steps may likewise be utilized. 
     Electronic devices presented herein may be implemented using a variety of different types of terminals. Examples of such devices include cellular phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), navigators, slate PCs, tablet PCs, ultra books, wearable devices (for example, smart watches, smart glasses, head mounted displays (HMDs)), and the like. 
     By way of non-limiting example only, further description will be made with reference to particular types of mobile terminals. However, such teachings apply equally to other types of terminals, such as those types noted above. In addition, these teachings may also be applied to stationary terminals such as digital TV, desktop computers, and the like. 
     Referring to  FIGS. 1A to 1C ,  FIG. 1A  is a block diagram of an electronic device in accordance with one implementation of the present disclosure, and  FIGS. 1B and 1C  are conceptual views illustrating one example of an electronic device according to the present disclosure, viewed from different directions. 
     The electronic device  100  may be shown having components such as a wireless communication unit  110 , an input unit  120 , a sensing unit  140 , an output unit  150 , an interface unit  160 , a memory  170 , a controller  180 , and a power supply unit  190 . It is understood that implementing all of the illustrated components is not a requirement, and that greater or fewer components may alternatively be implemented. 
     In more detail, among others, the wireless communication unit  110  may typically include one or more modules which permit communications such as wireless communications between the electronic device  100  and a wireless communication system, communications between the electronic device  100  and another electronic device, or communications between the electronic device  100  and an external server. Further, the wireless communication unit  110  may typically include one or more modules which connect the electronic device  100  to one or more networks. Here, the one or more networks may be, for example, a 4G communication network and a 5G communication network. 
     The wireless communication unit  110  may include at least one of a 4G wireless communication module  111 , a 5G wireless communication module  112 , a short-range communication module  113 , and a location information module  114 . 
     The 4G wireless communication module  111  may perform transmission and reception of 4G signals with a 4G base station through a 4G mobile communication network. In this case, the 4G wireless communication module  111  may transmit at least one 4G transmission signal to the 4G base station. In addition, the 4G wireless communication module  111  may receive at least one 4G reception signal from the 4G base station. 
     In this regard, Uplink (UL) Multi-input and Multi-output (MIMO) may be performed by a plurality of 4G transmission signals transmitted to the 4G base station. In addition, Downlink (DL) MIMO may be performed by a plurality of 4G reception signals received from the 4G base station. 
     The 5G wireless communication module  112  may perform transmission and reception of 5G signals with a 5G base station through a 5G mobile communication network. Here, the 4G base station and the 5G base station may have a Non-Stand-Alone (NSA) structure. For example, the 4G base station and the 5G base station may be a co-located structure in which the stations are disposed at the same location in a cell. Alternatively, the 5G base station may be disposed in a Stand-Alone (SA) structure at a separate location from the 4G base station. 
     The 5G wireless communication module  112  may perform transmission and reception of 5G signals with a 5G base station through a 5G mobile communication network. In this case, the 5G wireless communication module  112  may transmit at least one 5G transmission signal to the 5G base station. In addition, the 5G wireless communication module  112  may receive at least one 5G reception signal from the 5G base station. 
     In this instance, 5G and 4G networks may use the same frequency band, and this may be referred to as LTE re-farming. Meanwhile, a sub-6 frequency band, which is a range of 6 GHz or less, may be used as the 5G frequency band. 
     On the other hand, a millimeter-wave (mmWave) range may be used as the 5G frequency band to perform broadband high-speed communication. When the mmWave band is used, the electronic device  100  may perform beamforming for communication coverage expansion with a base station. 
     On the other hand, regardless of the 5G frequency band, 5G communication systems can support a larger number of MIMO to improve a transmission rate. In this instance, UL MIMO may be performed by a plurality of 5G transmission signals transmitted to a 5G base station. In addition, DL MIMO may be performed by a plurality of 5G reception signals received from the 5G base station. 
     On the other hand, the wireless communication unit  110  may be in a Dual Connectivity (DC) state with the 4G base station and the 5G base station through the 4G wireless communication module  111  and the 5G wireless communication module  112 . As such, the dual connectivity with the 4G base station and the 5G base station may be referred to as EUTRAN NR DC (EN-DC). Here, EUTRAN is an abbreviated form of “Evolved Universal Telecommunication Radio Access Network”, and refers to a 4G wireless communication system. Also, NR is an abbreviated form of “New Radio” and refers to a 5G wireless communication system. 
     On the other hand, if the 4G base station and 5G base station are disposed in a co-located structure, throughput improvement is achieved by inter-Carrier Aggregation (inter-CA). Accordingly, when the 4G base station and the 5G base station are disposed in the EN-DC state, the 4G reception signal and the 5G reception signal may be simultaneously received through the 4G wireless communication module  111  and the 5G wireless communication module  112 . 
     The short-range communication module  113  is configured to facilitate short-range communications. Suitable technologies for implementing such short-range communications include Bluetooth, Radio Frequency IDentification (RFID), Infrared Data Association (IrDA), Ultra-WideBand (UWB), ZigBee, Near Field Communication (NFC), Wireless-Fidelity (Wi-Fi), Wi-Fi Direct, Wireless USB (Wireless Universal Serial Bus), and the like. The short-range communication module  114  in general supports wireless communications between the electronic device  100  and a wireless communication system, communications between the electronic device  100  and another electronic device, or communications between the electronic device and a network where another electronic device (or an external server) is located, via wireless area network. One example of the wireless area networks is a wireless personal area network. 
     Short-range communication between electronic devices may be performed using the 4G wireless communication module  111  and the 5G wireless communication module  112 . In one implementation, short-range communication may be performed between electronic devices in a device-to-device (D2D) manner without passing through base stations. 
     Meanwhile, for transmission rate improvement and communication system convergence, Carrier Aggregation (CA) may be carried out using at least one of the 4G wireless communication module  111  and the 5G wireless communication module  112  and the WiFi communication module  113 . In this regard, 4G +WiFi CA may be performed using the 4G wireless communication module  111  and the Wi-Fi communication module  113 . Or, 5G+WiFi CA may be performed using the 5G wireless communication module  112  and the Wi-Fi communication module  113 . 
     The location information module  114  may be generally configured to detect, calculate, derive or otherwise identify a position (or current position) of the electronic device. As an example, the location information module  115  includes a Global Position System (GPS) module, a Wi-Fi module, or both. For example, when the electronic device uses a GPS module, a position of the electronic device may be acquired using a signal sent from a GPS satellite. As another example, when the electronic device uses the Wi-Fi module, a position of the electronic device can be acquired based on information related to a wireless Access Point (AP) which transmits or receives a wireless signal to or from the Wi-Fi module. If desired, the location information module  115  may alternatively or additionally function with any of the other modules of the wireless communication unit  110  to obtain data related to the position of the electronic device. The location information module  115  is a module used for acquiring the position (or the current position) of the electronic device and may not be limited to a module for directly calculating or acquiring the position of the electronic device. 
     Specifically, when the electronic device utilizes the 5G wireless communication module  112 , the position of the electronic device may be acquired based on information related to the 5G base station which performs radio signal transmission or reception with the 5G wireless communication module. In particular, since the 5G base station of the mmWave band is deployed in a small cell having a narrow coverage, it is advantageous to acquire the position of the electronic device. 
     The input unit  120  may include a camera  121  or an image input unit for obtaining images or video, a microphone  122 , which is one type of audio input device for inputting an audio signal, and a user input unit  123  (for example, a touch key, a mechanical key, and the like) for allowing a user to input information. Data (for example, audio, video, image, and the like) may be obtained by the input unit  120  and may be analyzed and processed according to user commands. 
     The sensor unit  140  may typically be implemented using one or more sensors configured to sense internal information of the electronic device, the surrounding environment of the electronic device, user information, and the like. For example, the sensing unit  140  may include at least one of a proximity sensor  141 , an illumination sensor  142 , a touch sensor, an acceleration sensor, a magnetic sensor, a G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared (IR) sensor, a finger scan sensor, a ultrasonic sensor, an optical sensor (for example, camera  121 ), a microphone  122 , a battery gauge, an environment sensor (for example, a barometer, a hygrometer, a thermometer, a radiation detection sensor, a thermal sensor, and a gas sensor, among others), and a chemical sensor (for example, an electronic nose, a health care sensor, a biometric sensor, and the like). The electronic device disclosed herein may be configured to utilize information obtained from one or more sensors, and combinations thereof 
     The output unit  150  may typically be configured to output various types of information, such as audio, video, tactile output, and the like. The output unit  150  may be shown having at least one of a display  151 , an audio output module  152 , a haptic module  153 , and an optical output module  154 . The display  151  may have an inter-layered structure or an integrated structure with a touch sensor in order to implement a touch screen. The touch screen may function as the user input unit  123  which provides an input interface between the electronic device  100  and the user and simultaneously provide an output interface between the electronic device  100  and a user. 
     The interface unit  160  serves as an interface with various types of external devices that are coupled to the electronic device  100 . The interface unit  160 , for example, may include any of wired or wireless ports, external power supply ports, wired or wireless data ports, memory card ports, ports for connecting a device having an identification module, audio input/output (I/O) ports, video I/O ports, earphone ports, and the like. In some cases, the electronic device  100  may perform assorted control functions associated with a connected external device, in response to the external device being connected to the interface unit  160 . 
     The memory  170  is typically implemented to store data to support various functions or features of the electronic device  100 . For instance, the memory  170  may be configured to store application programs executed in the electronic device  100 , data or instructions for operations of the electronic device  100 , and the like. Some of these application programs may be downloaded from an external server via wireless communication. Other application programs may be installed within the electronic device  100  at the time of manufacturing or shipping, which is typically the case for basic functions of the electronic device  100  (for example, receiving a call, placing a call, receiving a message, sending a message, and the like). It is common for application programs to be stored in the memory  170 , installed in the electronic device  100 , and executed by the controller  180  to perform an operation (or function) for the electronic device  100 . 
     The controller  180  typically functions to control an overall operation of the electronic device  100 , in addition to the operations associated with the application programs. The control unit  180  may provide or process information or functions appropriate for a user by processing signals, data, information and the like, which are input or output by the aforementioned various components, or activating application programs stored in the memory  170 . 
     Also, the controller  180  may control at least some of the components illustrated in  FIG. 1A , to execute an application program that have been stored in the memory  170 . In addition, the controller  180  may control a combination of at least two of those components included in the electronic device  100  to activate the application program. 
     The power supply unit  190  may be configured to receive external power or provide internal power in order to supply appropriate power required for operating elements and components included in the electronic device  100 . The power supply unit  190  may include a battery, and the battery may be configured to be embedded in the terminal body, or configured to be detachable from the terminal body. 
     At least part of the components may cooperably operate to implement an operation, a control or a control method of an electronic device according to various embodiments disclosed herein. Also, the operation, the control or the control method of the electronic device may be implemented on the electronic device by an activation of at least one application program stored in the memory  170 . 
     Referring to  FIGS. 1B and 1C , the disclosed electronic device  100  includes a bar-like terminal body. However, the mobile terminal  100  may alternatively be implemented in any of a variety of different configurations. Examples of such configurations include watch type, clip-type, glasses-type, or a folder-type, flip-type, slide-type, swing-type, and swivel-type in which two and more bodies are combined with each other in a relatively movable manner, and combinations thereof. Discussion herein will often relate to a particular type of electronic device. However, such teachings with regard to a particular type of electronic device will generally be applied to other types of electronic devices as well. 
     Here, considering the electronic device  100  as at least one assembly, the terminal body may be understood as a conception referring to the assembly. 
     The electronic device  100  will generally include a case (for example, frame, housing, cover, and the like) forming the appearance of the terminal. In this embodiment, the electronic device  100  may include a front case  101  and a rear case  102 . Various electronic components are interposed into a space formed between the front case  101  and the rear case  102 . At least one middle case may be additionally positioned between the front case  101  and the rear case  102 . 
     The display unit  151  is shown located on the front side of the terminal body to output information. As illustrated, a window  151   a  of the display unit  151  may be mounted to the front case  101  to form the front surface of the terminal body together with the front case  101 . 
     In some embodiments, electronic components may also be mounted to the rear case  102 . Examples of those electronic components mounted to the rear case  102  may include a detachable battery, an identification module, a memory card and the like. Here, a rear cover  103  for covering the electronic components mounted may be detachably coupled to the rear case  102 . Therefore, when the rear cover  103  is detached from the rear case  102 , the electronic components mounted on the rear case  102  are exposed to the outside. Meanwhile, part of a side surface of the rear case  102  may be implemented to operate as a radiator. 
     As illustrated, when the rear cover  103  is coupled to the rear case  102 , a side surface of the rear case  102  may partially be exposed. In some cases, upon the coupling, the rear case  102  may also be completely shielded by the rear cover  103 . Meanwhile, the rear cover  103  may include an opening for externally exposing a camera  121   b  or an audio output module  152   b.    
     The electronic device  100  may include a display unit  151 , first and second audio output module  152   a  and  152   b , a proximity sensor  141 , an illumination sensor  142 , an optical output module  154 , first and second cameras  121   a  and  121   b , first and second manipulation units  123   a  and  123   b , a microphone  122 , an interface unit  160 , and the like. 
     The display  151  is generally configured to output information processed in the electronic device  100 . For example, the display  151  may display execution screen information of an application program executing at the electronic device  100  or user interface (UI) and graphic user interface (GUI) information in response to the execution screen information. 
     The display  151  may be implemented using two display devices, according to the configuration type thereof. For instance, a plurality of the displays  151  may be arranged on one side, either spaced apart from each other, or these devices may be integrated, or these devices may be arranged on different surfaces. 
     The display unit  151  may include a touch sensor that senses a touch with respect to the display unit  151  so as to receive a control command in a touch manner. Accordingly, when a touch is applied to the display unit  151 , the touch sensor may sense the touch, and a control unit  180  may generate a control command corresponding to the touch. Contents input in the touch manner may be characters, numbers, instructions in various modes, or a menu item that can be specified. 
     In this way, the display unit  151  may form a touch screen together with the touch sensor, and in this case, the touch screen may function as the user input unit ( 123 , see  FIG. 1A ). In some cases, the touch screen may replace at least some of functions of a first manipulation unit  123   a.    
     The first audio output module  152   a  may be implemented as a receiver for transmitting a call sound to a user&#39;s ear and the second audio output module  152   b  may be implemented as a loud speaker for outputting various alarm sounds or multimedia playback sounds. 
     The optical output module  154  may be configured to output light for indicating an event generation. Examples of such events may include a message reception, a call signal reception, a missed call, an alarm, a schedule alarm, an email reception, information reception through an application, and the like. When a user has checked a generated event, the control unit  180  may control the optical output module  154  to stop the light output. 
     The first camera  121   a  may process image frames such as still or moving images obtained by the image sensor in a capture mode or a video call mode. The processed image frames can then be displayed on the display unit  151  or stored in the memory  170 . 
     The first and second manipulation units  123   a  and  123   b  are examples of the user input unit  123 , which may be manipulated by a user to provide input to the electronic device  100 . The first and second manipulation units  123   a  and  123   b  may also be commonly referred to as a manipulating portion. The first and second manipulation units  123   a  and  123   b  may employ any method if it is a tactile manner allowing the user to perform manipulation with a tactile feeling such as touch, push, scroll or the like. The first and second manipulation units  123   a  and  123   b  may also be manipulated through a proximity touch, a hovering touch, and the like, without a user&#39;s tactile feeling. 
     On the other hand, the electronic device  100  may include a finger scan sensor which scans a user&#39;s fingerprint. The controller  180  may use fingerprint information sensed by the finger scan sensor as an authentication means. The finger scan sensor may be installed in the display unit  151  or the user input unit  123 . 
     The microphone  122  may be configured to receive the user&#39;s voice, other sounds, and the like. The microphone  122  may be provided at a plurality of places, and configured to receive stereo sounds. 
     The interface unit  160  may serve as a path allowing the electronic device  100  to interface with external devices. For example, the interface unit  160  may be at least one of a connection terminal for connecting to another device (for example, an earphone, an external speaker, or the like), a port for near field communication (for example, an Infrared DaAssociation (IrDA) port, a Bluetooth port, a wireless LAN port, and the like), or a power supply terminal for supplying power to the electronic device  100 . The interface unit  160  may be implemented in the form of a socket for accommodating an external card, such as Subscriber Identification Module (SIM), User Identity Module (UIM), or a memory card for information storage. 
     The second camera  121   b  may be further mounted to the rear surface of the terminal body. The second camera  121   b  may have an image capturing direction, which is substantially opposite to the direction of the first camera unit  121   a.    
     The second camera  121   b  may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix form. The cameras may be referred to as an ‘array camera.’ When the second camera  121   b  is implemented as the array camera, images may be captured in various manners using the plurality of lenses and images with better qualities may be obtained. 
     The flash  124  may be disposed adjacent to the second camera  121   b . When an image of a subject is captured with the camera  121   b , the flash  124  may illuminate the subject. 
     The second audio output module  152   b  may further be disposed on the terminal body. The second audio output module  152   b  may implement stereophonic sound functions in conjunction with the first audio output module  152   a , and may be also used for implementing a speaker phone mode for call communication. 
     At least one antenna for wireless communication may be disposed on the terminal body. The antenna may be embedded in the terminal body or formed in the case. Meanwhile, a plurality of antennas connected to the 4G wireless communication module  111  and the 5G wireless communication module  112  may be arranged on a side surface of the terminal. Alternatively, an antenna may be formed in a form of film to be attached onto an inner surface of the rear cover  103  or a case including a conductive material may serve as an antenna. 
     Meanwhile, the plurality of antennas arranged on a side surface of the terminal may be implemented with four or more antennas to support MIMO. In addition, when the 5G wireless communication module  112  operates in a millimeter-wave (mmWave) band, as each of the plurality of antennas is implemented as an array antenna, a plurality of array antennas may be arranged in the electronic device. 
     The terminal body is provided with a power supply unit  190  (see  FIG. 1A ) for supplying power to the electronic device  100 . The power supply unit  190  may include a batter  191  which is mounted in the terminal body or detachably coupled to an outside of the terminal body. 
     Hereinafter, description will be given of embodiments of a multi-transmission system and an electronic device having the same, specifically, a power amplifier in a heterogeneous radio system and an electronic device having the same according to the present disclosure, with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present DISCLOSURE may be embodied in other specific forms without departing from the idea or essential characteristics thereof. 
       FIG. 2  is a block diagram illustrating a configuration of a wireless communication unit of an electronic device operable in a plurality of wireless communication systems according to an embodiment. Referring to  FIG. 2 , the electronic device may include a first power amplifier  210 , a second power amplifier  220 , and an RFIC  250 . In addition, the electronic device may further include a modem  400  and an application processor (AP)  500 . Here, the modem  400  and the application processor (AP)  500  may be physically implemented on a single chip, and may be implemented in a logical and functionally separated form. However, the present disclosure is not limited thereto and may be implemented in the form of a chip that is physically separated according to an application. 
     Meanwhile, the RFIC  250  and the modem  400  may be referred to as a transceiver circuit  250  and a baseband processor  400 , respectively. 
     Meanwhile, the electronic device may include a plurality of low noise amplifiers (LNAs)  410  to  440  in the receiver. Here, the first power amplifier  210 , the second power amplifier  220 , the RFIC  250 , and the plurality of low noise amplifiers  310  to  340  are all operable in a first communication system and a second communication system. In this case, the first communication system and the second communication system may be a 4G communication system and a 5G communication system, respectively. 
     As illustrated in  FIG. 2 , the RFIC  250  may be configured as a 4G/5G integrated type, but the present disclosure is not limited thereto. The RFIC  250  may be configured as a 4G/5G separated type according to an application. When the RFIC  250  is configured as a 4G/5G integration type, it is advantageous in terms of synchronization between 4G and 5G circuits, and also there is an advantage that control signaling by the modem  400  can be simplified. 
     On the other hand, when the RFIC  250  is configured as a 4G/5G separation type, it may be referred to as a 4G RFIC and a 5G RFIC, respectively. In particular, when there is a great difference between a 5G band and a 4G band, such as a case where the 5G band is configured as a mmWave band, the RFIC  250  may be configured as the 4G/5G separated type. As such, when the RFIC  250  is configured as a 4G/5G separation type, there is an advantage that the RF characteristics can be optimized for each of the 4G band and the 5G band. 
     Meanwhile, even when the RFIC  250  is configured as a 4G/5G separation type, the 4G RFIC and the 5G RFIC may be logically and functionally separated but physically implemented on a single chip. 
     On the other hand, the application processor (AP)  500  is configured to control the operation of each component of the electronic device. Specifically, the application processor (AP)  500  may control the operation of each component of the electronic device through the modem  400 . 
     For example, the modem  400  may be controlled through a power management IC (PMIC) for low power operation of the electronic device. Accordingly, the modem  400  may operate the power circuits of the transmitter and the receiver in a low power mode through the RFIC  250 . 
     In this regard, when it is determined that the electronic device is in an idle mode, the application processor (AP)  500  may control the RFIC  250  through the modem  400  as follows. For example, when the electronic device is in an idle mode, the application processor  280  may control the RFIC  250  through the modem  400 , such that at least one of the first and second power amplifiers  110  and  120  operates in the low power mode or is turned off 
     According to another embodiment, the application processor (AP)  500  may control the modem  400  to provide wireless communication capable of performing low power communication when the electronic device is in a low battery mode. For example, when the electronic device is connected to a plurality of entities among a 4G base station, a 5G base station, and an access point, the application processor (AP)  500  may control the modem  400  to enable wireless communication at the lowest power. Accordingly, the application processor (AP)  500  may control the modem  400  and the RFIC  250  to perform short-range communication using only the short-range communication module  113 , even at the expense of throughput. 
     According to another embodiment, when the remaining battery level of the electronic device is above the threshold, the modem  400  may be controlled to select an optimal wireless interface. For example, the application processor (AP)  500  may control the modem  400  to receive data through both the 4G base station and the 5G base station according to the remaining battery level and the available radio resource information. In this case, the application processor (AP)  500  may receive the remaining battery information from the PMIC, and the available radio resource information from the modem  400 . Accordingly, when the remaining battery level and the available radio resources are sufficient, the application processor (AP)  500  may control the modem  400  and the RFIC  250  to receive data through both the 4G base station and 5G base station. 
     Meanwhile, a multi-transceiving system of  FIG. 2  may integrate a transmitter and a receiver of each radio system into one transceiver. Accordingly, there is an advantage in that a circuit portion for integrating two types of system signals may be eliminated at a RF front-end. 
     Furthermore, since the front end parts can be controlled by an integrated transceiver, the front end parts may be more efficiently integrated than when the transceiving system is separated by communication systems. 
     In addition, when separated by communication systems, it may be impossible to control other communication systems as required, or impossible to perform efficient resource allocation since system delay increases due to this. On the other hand, the multi-transceiving system as illustrated in  FIG. 2  has advantages of controlling different communication systems according to necessity and minimizing system delay, which may result in enabling efficient resource allocation. 
     Meanwhile, the first power amplifier  210  and the second power amplifier  220  may operate in at least one of the first and second communication systems. In this regard, when the 5G communication system operates in a 4G band or a Sub-6 band, the first and second power amplifiers  1210  and  220  may operate in both the first and second communication systems. 
     On the contrary, when the 5G communication system operates in a millimeter-wave (mmWave) band, the first and second power amplifiers  210 ,  220  may operate in either the 4G band and the other in the millimeter-wave band. 
     On the other hand, a transmitter and a receiver may be integrated to implement two different wireless communication systems using a single antenna using a dual transmit/receive antenna. In this case, 4×4 MIMO may be implemented using four antennas as illustrated in  FIG. 2 . At this time, 4×4 DL MIMO may be performed through downlink (DL). 
     Meanwhile, when the 5G band is a Sub-6 band, first to fourth antennas ANT 1  to ANT 4  may be configured to operate in both the 4G band and the 5G band. On the contrary, when the 5G band is a millimeter-wave (mmWave) band, the first to fourth antennas (ANT 1  to ANT 4 ) may be configured to operate in either one of the 4G band and the 5G band. In this case, when the 5G band is a millimeter-wave (mmWave) band, a plurality of antennas may be individually configured as an array antenna in the millimeter-wave band. 
     Meanwhile, 2×2 MIMO may be implemented using two antennas connected to the first power amplifier  210  and the second power amplifier  220  among the four antennas. At this time, 2×2 UL MIMO (2 Tx) may be performed through uplink (UL). Alternatively, the present disclosure is not limited to 2×2 UL MIMO, and may also be implemented as 1 Tx or 4 Tx. In this case, when the 5G communication system is implemented with 1 Tx, only one of the first and second power amplifiers  210 ,  220  may operate in the 5G band. Meanwhile, when the 5G communication system is implemented using 4Tx, an additional power amplifier operating in the 5G band may be further provided. Alternatively, a transmission signal may be branched in each of one or two transmission paths, and the branched transmission signal may be connected to a plurality of antennas. 
     On the other hand, a switch-type splitter or power divider is embedded in an RFIC corresponding to the RFIC  250 . Accordingly, a separate external component is not needed, thereby improving a component mounting configuration. In more detail, a single pole double throw (SPDT) type switch may be provided in the RFIC corresponding to the controller  250  to select transmitters (TXs) of two different communication systems. 
     In addition, the electronic device that is operable in the plurality of wireless communication systems according to an embodiment may further include a duplexer  231 , a filter  232 , and a switch  233 . 
     The duplexer  231  is configured to separate signals in a transmission band and a reception band from each other. In this case, signals in a transmission band transmitted through the first and second power amplifiers  210  and  220  are applied to the antennas ANT 1  and ANT 4  through a first output port of the duplexer  231 . On the contrary, signals in a reception band received through the antennas ANT 1  and ANT 4  are received by the low noise amplifiers  310  and  340  through a second output port of the duplexer  231 . 
     The filter  232  may be configured to pass signals in a transmission band or a reception band and block signals in the remaining bands. In this case, the filter  232  may include a transmission filter connected to the first output port of the duplexer  231  and a reception filter connected to the second output port of the duplexer  231 . Alternatively, the filter  232  may be configured to pass only signals in the transmission band or only signals in the reception band according to a control signal. 
     The switch  233  is configured to transmit only one of the transmission signal and the reception signal. In an embodiment of the present disclosure, the switch  233  may be configured in a single-pole double-throw (SPDT) type to separate a transmission signal and a reception signal in a time division duplex (TDD) scheme. In this case, the transmission signal and the reception signal are signals of the same frequency band, and thus the duplexer  231  may be implemented as a type of circulator. 
     Meanwhile, in another implementation of the present disclosure, the switch  233  may also be applied to a frequency division multiplex (FDD) scheme. In this case, the switch  233  may be configured in the form of a double-pole double-throw (DPDT) to connect or block a transmission signal and a reception signal, respectively. On the other hand, the transmission signal and the reception signal may be separated by the duplexer  231 , and thus the switch  233  is not necessarily required. 
     Meanwhile, the electronic device according to the present disclosure may further include a modem  400  corresponding to the controller. In this case, the RFIC  250  and the modem  400  may be referred to as a first controller (or a first processor) and a second controller (a second processor), respectively. On the other hand, the RFIC  250  and the modem  400  may be implemented as physically separated circuits. Alternatively, the RFIC  250  and the modem  400  may be logically or functionally distinguished from each other on one physical circuit. 
     The modem  400  may perform control of signal transmission and reception through different communication systems using the RFID  250  and processing of those signals. The modem  400  may acquire control information from a 4G base station and/or a 5G base station. Here, the control information may be received through a physical downlink control channel (PDCCH), but the present disclosure is not limited thereto. 
     The modem  400  may control the RFIC  250  to transmit and/or receive signals through the first communication system and/or the second communication system at specific time and frequency resources. Accordingly, the RFIC  250  may control transmission circuits including the first and second power amplifiers  210  and  220  to transmit a 4G signal or a 5G signal at a specific time interval. In addition, the RFIC  250  may control reception circuits including the first to fourth low noise amplifiers  310  to  340  to receive a 4G signal or a 5G signal at a specific time interval. 
     Hereinafter, detailed operations and functions of an electronic device having a connector according to the present disclosure that includes the multi-transceiving system as illustrated in  FIG. 2  will be discussed. In more detail, an electronic device including a connector for connecting a transceiver circuit and antennas in a multi-transceiving system will be described. 
     In this regard,  FIG. 3A  is a conceptual view illustrating a structure in which a transceiver circuit and antennas are directly connected without a separate connector.  FIG. 3B  is a conceptual view illustrating a structure in which a transceiver circuit and antennas are connected to a connector in accordance with the present disclosure. 
     Referring to  FIG. 3A , a structure in which an RFIC  1250  as a transceiver circuit and a plurality of antennas  1110  are directly connected without a separate connector is illustrated. In such a structure, there may be a disadvantage in that a performance test on each of the RFIC  1250  and the antennas  1110  is not allowed while the RFIC  1250  and the antenna  1110  are directly connected to each other. This may cause a disadvantage in that the RFIC  1250  and the antenna  1110  must be designed and manufactured in an integrated manner. In addition, if any one of connection parts between the RFIC  1250  and the antennas  1110  has a problem in a connected state, an entire module cannot be used. 
     Also, in terms of performance, since the RFIC  1250  and the antennas  1110  are directly connected, there may be an issue of heat generation of the RFIC  1250 . As the RFIC  1250  and the antennas  1110  are directly connected, an air gap between the antennas  1110  and a device may be required, which may cause a limit to optimal matching. 
     On the other hand, referring to  FIG. 3B , a connector  1120  may be disposed between the plurality of antennas  1110  and the transceiver circuit  1250 , and the antennas  1110  and the transceiver circuit  1250  may be connected with each other through the connector  1120 . Accordingly, in the state in which the RFIC  1250  and the antennas  1110  are directly connected, a performance test on each of the RFIC  1250  and the antennas  1110  may be allowed. It may also be advantageous that each of the RFIC  1250  and the antennas  1110  can be optimally designed. Even when any one of connection parts between the RFIC  1250  and the antennas  1110  has a problem in a connected state, an entire module can be used by replacing the connector  1120 . 
     Also, in terms of performance, since the RFIC  1250  and the antennas  1110  are not directly connected but connected through the connector  1120 , the heat generation issue of the RFIC  1250  can be overcome. As the RFIC  1250  and the antennas  1110  are connected through the connector  1120 , the optimal matching can be achieved. 
     Meanwhile, the number of antennas  1110  is not limited to eight (8), but may be changed to 4, 8, 16, 32, etc. depending on applications. In this case, four antennas among those eight antennas  1110  may be implemented as one array antenna to perform beamforming. Accordingly, multiple input and output (MIMO) may be performed using a first array antenna and a second array antenna each configured with four antennas. Also, when the antennas  1110  support horizontal/vertical (H/V) polarization like a patch antenna, MIMO may be performed according to the H/V polarization. Accordingly, a maximum of 4×4 MIMO can be performed using the first array antenna, the second array antenna, and the H/V polarization. 
     On the other hand, there may be a problem in that insertion loss (IL) greatly increases in the case of using an existing SMA type connector in a frequency band like a millimeter-wave band. In this regard,  FIG. 4A  is a view illustrating insertion loss (IL) and voltage standing wave ratio (VSWR) when the related art connector is used in the same frequency band as a millimeter-wave band. 
     Referring to (a) of  FIG. 4A , the ILs in 28 GHz band and 39 GHz band have values of −6 dB and −12 dB, respectively. Accordingly, as signals received through the antennas in the 28 GHz band and the 39 GHz band pass through the connector, signal amplitudes may be reduced to ¼ and 1/16, respectively. Accordingly, there is a problem that the related art connector cannot be used to connect the antennas and the RFIC in a millimeter-wave band. 
     Referring to (b) of  FIG. 4A , the VSWRs have values of 2 or less in the 28 GHz band and the 39 GHz band. Therefore, it can be seen that signals reflected back to the antennas while passing through the connector after being received through the antennas in the 28 GHz band and the 39 GHz band are negligible. However, similar to (a) of  FIG. 4A , the great reduction of the signal amplitudes may be caused while the signals received through the antennas pass through the connector in the 28 GHz band and the 39 GHz band. 
     On the other hand,  FIG. 4B  is a view illustrating insertion loss (IL) for a multilayered PCB connector in accordance with the present disclosure. Referring to  FIG. 4B , the multilayered PCB connector has very good RF characteristics in that ILs in frequency bands ranging from  23  GHz to 44 GHz including the 28 GHz band and the 39 GHz band are 1.4 dB or less. 
     Meanwhile, a connector according to the present disclosure may be configured to vertically connect an antenna PCB and an RFIC PCB each having a plurality of layers. In this regard,  FIG. 5  is a conceptual view illustrating a connector coupling structure for vertically connecting an RFIC PCB and an antenna PCB each having a plurality of layers in accordance with the present disclosure. 
     Referring to  FIG. 5 , the RFIC PCB and the antenna PCB may be referred to as a first multilayered printed circuit board (PCB)  2100  and a second multilayered PCB  2200 , respectively. In this case, the first multilayered PCB  2100  and the second multilayered PCB  2200  may be configured as a PCB with six layers and a PCB with three layers, respectively. However, the present disclosure is not limited thereto and may vary depending on applications. A connector  1120  may be disposed to connect the first multilayered PCB  2100  as the RFIC PCB and the second multilayered PCB  2200  as the antenna PCB. 
     Referring to  FIGS. 3 and 5 , a connector device according to one aspect of the present disclosure is provided. Here, the connector device may include not only the connector  1120  of  FIG. 3B  but also the first multilayered PCB  2100  and the second multilayered PCB  2200  of  FIG. 5 . 
     On the other hand, referring to  FIGS. 3, 5 and 7 , an electronic device including a connector device according to another aspect of the present disclosure is provided. Here, the electronic device may further include a transceiver circuit (RFIC)  1250  and a baseband processor  1400  of  FIG. 7  in addition to the first multilayered PCB  2100  and the second multilayered PCB  2200  of  FIG. 5 . 
     The connector device according to the one aspect of the present disclosure may include a first connecting portion  1121  and a second connecting portion  1122 . Specifically, the first connecting portion  1121  may include a plurality of terminals connected to the first multilayered PCB  2100 . Also, the second connecting portion  1122  may include a plurality of terminals connected to the second multilayered PCB  2200 . Here, the number of the plurality of terminals is not limited to eight, and may vary depending on the number of antennas. 
     Meanwhile, the transceiver circuit  1250  may be disposed on the first multilayered PCB  2100  and the antennas  1110  may be disposed on the second multilayered PCB  2200 . At this time, signal transmission lines of the first multilayered PCB  2100  and the second multilayered PCB  2100  may be vertically connected to each other by the first connecting portion  1111  and the second connecting portion  1112  of the connector  1120 , such that RF (radio frequency) signals can be transmitted. Specifically, the connector  1120  may allow the transmission of the RF signals between the antennas  1100  and the transceiver circuit  1250  through the first connecting portion  1121  and the second connecting portion  1122 . 
     Referring to  FIGS. 3B and 5 , the first multilayered PCB  2100  may include the transceiver circuit  1250 . And, the second multilayered PCB  2200  may include the antennas  1110 . The connector  1120  may be configured to connect the first multilayered PCB  2100  and the second multilayered PCB  2200  to each other. At this time, for convenience of explanation, Layer 6 and Layer 3, which are the uppermost layers of the first multilayered PCB  2100  and the second multilayered PCB  2200 , are illustrated. However, the present disclosure is not limited thereto, and may also be applied to arbitrary layers of the first multilayered PCB  2100  and the second multilayered PCB  2200 . 
     Meanwhile, the first multilayered PCB  2100  may include a ground pattern  2110  constituting a ground vertical-connection between different layers. Also, the second multilayered PCB  2200  may include a ground pattern  2210  constituting a ground vertical-connection between different layers. 
     In this regard, the ground patterns  2110  and  2210  may include ground pads  2111  and  2211 , respectively, on which ground vias for the vertical connection between grounds are disposed. The ground patterns  2110  and  2210  may also include ground lines  2112  and  2212 , respectively, connecting the ground pads  2111  and  2211 . Some of the ground pads  2111  and  2211  may be directly connected without the ground lines  2112  and  2212 . 
     Each of the ground patterns  2110  and  2210  may be provided in plurality to correspond to a plurality of ground terminals of the connector  1120 . In this case, signal transmission lines  2120  and  2220  may be disposed between the plurality of ground patterns  2110  and  2210 . 
     Meanwhile, the ground pad  2111  may include first and second circular ground pads  2111   a  and  2111   b  having the same circular shape as that of a ground via. In this case, each of the first and second circular ground pads  2111   a  and  2111   b  may be connected to a ground line  2112  having a width smaller than diameters of the ground pads  2111   a  and  2111   b . In this regard, by configuring the width of the ground line  2112  to be narrower than the diameters of the first and second circular ground pads  2111   a  and  2111   b , a problem of generating unwanted inductive and capacitive components in the millimeter-wave band can be solved. 
     The configuration of the ground pad  2111  of the first multilayered PCB  2100  that is the RFIC PCB may also be applicable to the ground pad  2211  of the second multilayered PCB  2200  that is the antenna PCB. Therefore, the ground pad  2211  may include first and second circular ground pads  2211   a  and  2211   b  having the same circular shape as that of a ground via. In this case, each of the first and second circular ground pads  2211   a  and  2211   b  may be connected to a ground line  2212  having a width smaller than diameters of the ground pads  2211   a  and  2211   b . In this regard, by configuring the width of the ground line  2212  to be narrower than the diameters of the first and second circular ground pads  2211   a  and  2211   b , a problem of generating unwanted inductive and capacitive components in the millimeter-wave band can be solved. 
     Meanwhile, in relation to a lower bound of the widths of the ground lines  2112  and  2212 , when a line-width is narrow, unwanted radiation due to high impedance may occur. However, since the ground lines  2112  and  2212  themselves do not transmit signals, the lower bound of the widths of the ground lines  2112  and  2212  does not matter much. 
     Signal transmission lines  2120  and  2220  may be disposed between the plurality of ground patterns  2110  and  2210  on the first multilayered PCB  2100  and the second multilayered PCB  2200 . Accordingly, the first multilayered PCB  2100  and the second multilayered PCB  2200  may include the signal transmission lines  2120  and  2220 , respectively, that constitute a vertical connection for signal transmission between different layers. 
     The signal transmission lines  2120  and  2220  may include signal pads  2121  and  2221 , respectively, on which signal vias for vertical connection for signal transmission are disposed. The signal transmission lines  2120  and  2220  may also include ground lines  2122  and  2222 , respectively, connecting the ground pads  2121  and  2221 . In this case, the signal lines  2122  and  2222  may have widths smaller than the diameters of the signal pads  2121  and  2221  and extend from the signal pads  2121  and  2221  by predetermined lengths. In this case, the widths of the signal lines  2122  and  2222  may be fixed to a width of a characteristic impedance value, unlike the widths of the ground lines  2112  and  2212 . For example, the widths of the signal lines  2122  and  2222  may be set (fixed) to a width of a characteristic impedance value of 50 Ω, but may be set to different characteristic impedance values depending on applications. 
     The signal pads  2121  and  2221  may also be implemented as circular signal pads having the same circular shape as that of the signal via. In this regard, positions on one axis where the plurality of circular signal pads  2121  and  2221  are arranged may be positions where the ground lines  2112  and  2212  are arranged. 
     Accordingly, it may be optimal to arrange the ground lines  2112  and  2212 , other than the ground pads  2111  and  2211 , in a space between the plurality of circular signal pads  2121  and  2222 . This is because an arrangement space is insufficient if the circular ground pads  2111  and  2211  are disposed in the space between the plurality of circular signal pads  2121  and  2221 . In addition, since the first and second circular ground pads  2111   a ,  2111   b ,  2211   a , and  2211   b  are disposed adjacent to the signal lines  2122  and  2222 , there may be an advantage of implementing a CPW (coplanar waveguide) form. 
     In this regard,  FIG. 6A  is a view showing comparison results between a CPW structure based on a circular ground pad according to the present disclosure and the related art CPW structure. 
     Referring to  FIGS. 5  and (a) of IFG.  6 A, in the circular ground pad-based CPW structure according to the present disclosure, the first and second circular ground pads  2111   a ,  2111   b ,  2211   a , and  2211   b  may be disposed adjacent to the signal lines  2122  and  2222  on the same plane. This may result in reducing feeding loss due to unwanted radiation by the signal lines  2122  and  2222 . Specifically, the feeding loss can be reduced by the adjacent first and second circular ground pads  2111   a ,  2111   b ,  2211   a , and  2211   b  on the same plane. 
     In this regard, distances between the signal lines  2122  and  2222  and the first and second circular ground pads  2111   a ,  2111   b ,  2211   a , and  2211   b  may have values between a minimum value of d and a maximum value of d+r. Here, r denotes the radius of the first and second circular ground pads  2111   a ,  2111   b ,  2211   a , and  2211   b.    
     As such, as the distances between the signal lines  2122  and  2222  and the first and second circular ground pads  2111   a ,  2111   b ,  2211   a , and  2211   b  change, the feeding loss due to unwanted radiation by various forms and aspects can be reduced. For example, the unwanted radiation may be caused due to signals of various frequency bands such as higher-order modes in addition to a specific frequency band. Accordingly, as the distances between the signal lines  2122  and  2222  and the first and second circular ground pads  2111   a ,  2111   b ,  2211   a , and  2211   b  change into various forms, an effective response to unwanted radiation signals of various frequency bands can be achieved. 
     On the other hand, referring to (b) of  FIG. 6A , since distances between the signal line and the ground have the same value of d2, signal loss due to unwanted radiation of various shapes and aspects can be reduced. Specifically, when the distance d2 between the signal line and the ground is the maximum distance d+r of (a) of  FIG. 6A , an effect by the ground can be reduced. On the other hand, when the distance d2 between the signal line and the ground is the minimum distance d of (a) of  FIG. 6A , great changes in characteristics may be caused due to the changes in frequency bands. In addition, when the distance d2 between the signal line and the ground is the minimum distance d of (a) of  FIG. 6A , great changes in characteristics may be caused due to a circuit manufacture error. 
       FIG. 6B  is a view illustrating a PCB structure according to presence or absence of vias and ground patterns when ground pins are connected according to the present disclosure. Meanwhile,  FIGS. 6C and 6D  are views illustrating simulation results according to presence or absence of vias and ground patterns according to the present disclosure. 
     Specifically,  FIG. 6C  shows insertion loss (IL) at eight terminals when the visa and ground patterns according to the present invention exist. On the other hand,  FIG. 6D  shows IL at eight terminals when the vias and ground patterns according to the present invention do not exist. 
     Referring to  FIGS. 5 and 6B , a PCB structure according to presence or absence of vias and ground patterns for the second multilayered PCB  2200  corresponding to the three-layer PCB is shown. However, the present disclosure is not limited thereto, and may also be applicable to the first multilayered PCB  2100  corresponding to the six-layer PCB. 
     Meanwhile, as shown in  FIGS. 6B and 6C , it can be seen that the IL characteristics are good in 23 to 44 GHz bands when the vias and the ground patterns are present. On the other hand, as shown in  FIGS. 6B and 6C , it can be seen that the IL characteristics are degraded in the 23 to 44 GHz bands when the vias and the ground patterns are not present. 
     Specifically, Table 1 shows insertion loss (IL), isolation, and return loss (RL) according to presence or absence of vias and ground patterns according to the present disclosure. Here, the values in Table 1 represent the IL values, isolation values, and RL values in the case of the worst performance in the 23 to 44 GHz bands. 
     
       
         
           
               
               
               
               
             
               
                   
                 TABLE 1 
               
               
                   
                   
               
               
                   
                   
                   
                 Worst 
               
               
                   
                 Worst IL 
                 Worst RL 
                 Isolation 
               
               
                   
                 [dB] 
                 [dB] 
                 [dB] 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 No vias and ground patterns 
                 −3.2 
                 −8.7 
                 13.7 
               
               
                 With vias and ground patterns 
                 −1.4 
                 −11.3 
                 17.0 
               
               
                 (Proposed structure) 
               
               
                   
               
            
           
         
       
     
     Therefore, referring to Table 1, by the addition of the vias and ground patterns, the connector module according to the present disclosure can have very good RF characteristics in that the IL values are 1.4 dB or less in the 23 to 44 GHz bands. On the other hand, when the vias and ground patterns are not disposed around and inside the connector module, more than half of the RF loss occurs in that the ILs are up to 3.2 dB in the 23 to 44 GHz bands. 
     In addition, as the vias and ground patterns are added, the connector module according to the present disclosure can have very good RF characteristics in that the RL values are −10 hB or less and the isolation values are 17 dB or more in the 23 to 44 GHz bands. 
       FIG. 7  is a conceptual view illustrating a connection between an RFIC PCB and each terminal of an RFIC according to the present disclosure and a conceptual view of a circuit structure according to the connection. 
     On the other hand, referring to  FIGS. 3, 5 and 7 , an electronic device including a connector device according to another aspect of the present disclosure is provided. Here, the electronic device may further include a transceiver circuit (RFIC)  1250  and a baseband processor  1400  of  FIG. 7  in addition to the first multilayered PCB  2100  and the second multilayered PCB  2200  of  FIG. 5 . 
     As illustrated in (a) of  FIG. 7 , the ground pattern  2110  of the first multilayered PCB  2100 , which is the RFIC PCB, may include a plurality of ground pads  2111  on which ground vias for vertical connection between the grounds are disposed. The ground pattern  2110  may further include ground lines  2112  for connecting the ground pads  2111 . 
     Meanwhile, signal transmission lines  2120  constituting a vertical connection for signal transmission between different layers may be disposed between the plurality of ground lines  2112 . In this regard, n signal transmission lines  2120  may be disposed in each of a left region and a right region of the first multilayered PCB  2100 . For example, eight signal transmission lines  2120  may be disposed, namely, four in the left region and four in the right region of the first multilayered PCB  2100 . In this case, the eight signal transmission lines  2120  may be connected to eight terminals of the RFIC  1250 , respectively, to transmit signals from the signal transmission lines  2120  to the RFIC  1250 . 
     Specifically, referring to  FIGS. 3B and 7 , the baseband processor  1400  may control the transceiver circuit  1250  to perform MIMO using horizontal/vertical (H/V) polarization of the antennas  1110 . To this end, a first reception signal and a second reception signal may be simultaneously received during a specific time interval using the H/V polarization of the antennas  1110 . Accordingly, the baseband processor  1400  may control the transceiver circuit  1250  to perform the MIMO. 
     Meanwhile, referring to  FIGS. 3B, 5 and 7 , each of the first connecting portion  1121  connected to the first multilayered PCB  2100  and the second connecting portion  1122  connected to the second multilayered PCB  2200  may be provided with eight terminals. At this time, the baseband processor  1400  may control a first array antenna  1111  including four antennas connected to four of the eight terminals of the second connecting portion  1122 , and a second array antenna  1112  including four antennas connected to the other four terminals. In more detail, the baseband processor  1400  may control the transceiver circuit  1250  to perform the MIMO through the first array antenna  1111  and the second array antenna  1112 . 
     Meanwhile, as illustrated in  FIG. 5  and (b) of  FIG. 7 , an interface between the RFIC  1250  and the connector  1120  may have a strip-line structure. Here, the “strip-line” may be a structure in which ground planes are disposed at both top and bottom with interposing a signal line  2130  therebetween, as illustrated in (b) of  FIG. 7 . 
     Referring to (a) of  FIG. 7 , the eight signal transmission lines  2120  may be disposed on Layer 4 and connected to eight signal lines  2130 . In this case, the eight signal lines  2130  disposed on Layer 4 may be arranged in the “strip-line” structure. Accordingly, the ground planes may be disposed on both top and bottom of the eight signal lines  2130  connected to the RFIC  1250 . In this case, a direct connection with the RFIC  1250  by the signal transmission lines  2120  without the signal lines  2130  may also be allowed. Here, the signal transmission lines  2120  may be arranged in the strip-line structure. 
     Meanwhile,  FIG. 8  is a planar view illustrating each of Layer 4 and Layer 6 of an RFIC PCB according to the present disclosure, which illustrates a structure in which Layer 4 and Layer 6 are connected by signal vias and ground vias. 
     Specifically, Layer 6 of the first multilayered PCB  2100  that is the RFIC PCB illustrated in (a) of  FIG. 8  may correspond to Layer 6 of the first multilayered PCB  2100  that is the RFIC PCB illustrated in  FIG. 5 . In addition, Layer 4 of the first multilayered PCB  2100  illustrated in (b) of  FIG. 8  may correspond to Layer 6 of the first multilayered PCB  2100  illustrated in (a) of  FIG. 7 . 
     (c) of  FIG. 8  illustrates a configuration in which Layer 4 and Layer 6 of the first multilayered PCB  2100  are connected by signal vias and ground vias. Here, the signal vias may vertically connect the signal pads  2121  of different layers, for example, Layer 4 and Layer 6. 
     Referring to  FIG. 5  and (d) of  FIG. 8 , Layer 6 of the first multilayered PCB  2100  and the connector  1120  may be connected to each other by connector contact points  2140 ,  2160 . At this time, the ground pattern  2100  of Layer 6 of the first multilayered PCB  2100  may be electrically connected to the ground of the connector  1120  by the connector contact points  2140 . A second connector contact points  2160  connected with the connector  1120  is implemented in a floating metal pattern which is disconnected with ground patterns. 
     Referring to (d) and (e) of  FIG. 8 , the ground of the connector  1120  may be connected to the ground of Layer 6 of the first multilayered PCB  2100  by the connector contact points  2140 . In addition, signal terminals of the connector  1120  may be connected to the signal lines  2122  of Layer 6 of the first multilayered PCB  2100 . 
     Meanwhile,  FIG. 9  is a view illustrating a connected state between Layer 4 of the RFIC PCB and connector terminals and a configuration in which the connector is connected to Layers 4 and 6 of the RFIC PCB, according to the present disclosure. 
     Referring to (a) of  FIG. 9 , ground terminals of the connector  1120  may be electrically connected to the ground pads  2111  of Layer 4 of the first multilayered PCB  2100  which is the RFIC PCB. In this regard, (b) of  FIG. 9  is a lateral view illustrating that the ground terminals of the connector  1120  are electrically connected to the ground pads  2111  of Layer 4 of the first multilayered PCB  2100 . 
     Referring to (d) of  FIG. 8  and (c) of  FIG. 9 , the ground terminals of the connector  1120  may be electrically connected to the ground pads  2111  of Layer 4 of the first multilayered PCB  2100 , and also electrically connected to the connector contact points  2140  on the ground of Layer 6. 
       FIG. 10  is a planar view illustrating each of Layers 4, 5, and 6 of the RFIC PCB according to the present disclosure, which illustrates a structure in which Layers 4 to 6 are connected by signal vias and ground vias. 
     Specifically, Layer 4 of the first multilayered PCB  2100  that is the RFIC PCB illustrated in (a) of  FIG. 10  may correspond to Layer 4 of the first multilayered PCB  2100  that is the RFIC PCB illustrated in (b) of  FIG. 8 . In addition, Layer 6 of the first multilayered PCB  2100  of (b) of  FIG. 10  may correspond to Layer 6 of the first multilayered PCB  2100  of (a) of  FIG. 8 . 
     Meanwhile, the ground pattern  2110  of Layer 5 of the first multilayered PCB  2100  illustrated in (c) of  FIG. 10  may have the same shape as a ground pattern  2110   b  of Layer 4. Accordingly, the ground patterns  2110  and  2110   b  may be formed on the same position of different layers of the first multilayered PCB  2100 . In addition, a window region  2150  from which a metal pattern is removed may be formed between the adjacent ground patterns  2110  and  2110   b  on the same position of the different layers of the first multilayered PCB  2100 . 
     Specifically, referring to (a) to (c) of  FIG. 10 , the signal pads  2121  of Layers 4 to 6 of the first multilayered PCB  2100  may be formed on the same position. On Layers 4 and 6, the signal lines  2122  of the signal transmission line  2120  may be disposed on the left and right sides with respect to the signal pad  2121 , respectively. Signals may be transmitted between the connector  1120  and the RFIC  1250  through the signal lines  2122  disposed on the left and right sides with respect to the signal pad  2121 . On the other hand, on Layer 5 disposed between Layers 4 and 6, only the signal pad  2121  may be disposed without signal lines. 
     As such, as the ground patterns  2110  and  2110   b  and the window region  2150  are formed on the same position between different layers of the first multilayered PCB  2100 , distortion of signals transmitted through the signal transmission line  2120  can be prevented. The reason that the signal transmitted through the signal transmission line  2120  is prevented from being distorted may result from that such signal is transmitted through a symmetrical transmission line. A floating metal pattern is disposed at a second connector contact points  2160  in a window region  2150  to tune a radio frequency performance. 
     Here, “distortion” of a signal may mean loss of a signal transmitted to the RFIC  1250  through the signal transmission line  2120  and the signal line  2130 . In this case, the signal loss may include conduction loss of the signal transmission line  2120  and the signal line  2130  and dielectric loss due to permittivity of a substrate. In addition, when the signal transmission line  2120  and the signal line  2130  are implemented as high-impedance lines having a narrow line width or implemented in a bending manner, the signal loss may include radiation loss due to unwanted radiation. 
     Meanwhile, in order to minimize the signal loss, it may be necessary to use a substrate having a low dielectric constant or to minimize portions of the signal transmission line  2120  and the signal line  2130  having an impedance higher than 50 Ω. It may also be necessary to minimize a bending structure between the signal transmission line  2120  and the signal line  2130  or implement the signal line  2130  in a streamlined curved shape as illustrated in (b) of  FIG. 7 , other than a linear shape. 
     The signal “distortion” may include a signal distortion due to coupling between adjacent signal transmission lines or between the signal transmission line and the ground, or a signal distortion due to generation of higher-order mode signals in unwanted bands by higher-order modes. Accordingly, in order to prevent a signal distortion due to coupling or higher-order modes, the signal transmission line  2120  and the signal line  2130  may be symmetrically implemented on the same plane. In addition, in order to prevent such signal distortion, the signal transmission lines  2120  may be implemented in a symmetrical structure even on different layers. 
     With respect to the signal distortion, the symmetrical transmission lines may greatly reduce the distortion of the signal transmitted through the signal transmission line  2120  because peripheral metal patterns on the same plane are symmetrically formed in right and left directions. In addition, since the ground patterns on the top and bottom of the signal transmission line  2120  are also symmetrical, the distortion of the signal transmitted through the signal transmission line  2120  can be further reduced. In addition, the strip-line structure may be implemented as illustrated in (b) of  FIG. 7 , which may result in more reducing the signal loss or distortion than when a microstrip-line structure is implemented. In this regard, the “microstrip-line” has a form in which the ground is implemented only on a top or bottom of a signal line. 
     Meanwhile, (d) and (e) of  FIG. 10  illustrate a structure in which Layers 4 to 6 of the first multilayered PCB  2100  are electrically connected. Specifically, (d) of  FIG. 10  is a front view viewed from Layer 6 in a state in which Layers 4 to 6 of the first multilayered PCB  2100  are connected. In this regard, since the ground pattern  2110  of Layer 5 has the same shape as the ground pattern  2110   b  of Layer 4, only the state in which the signal transmission line  2120  is interconnected between Layers 5 and 6 may be displayed. 
     On the other hand, (e) of  FIG. 10  is a front view viewed from Layer 4 in a state in which Layers 4 to 6 of the first multilayered PCB  2100  are connected. In this regard, since the ground pattern  2110  of Layer 5 has the same shape as the ground pattern  2110   b  of Layer 4, only the state in which the signal transmission line  2120  is interconnected between Layers 4 and 6 may be displayed. 
       FIG. 11  is a planar view illustrating all of layers of the RFIC PCB according to the present disclosure. 
     Specifically, (a) to (f) of  FIG. 11  correspond to Layers 6 to 1 of the first multilayered PCB  2100 , which is the RFIC PCB. As described above, the ground pattern  2110  of Layer 5 illustrated in (b) of  FIG. 11  may have the same shape and be disposed at the same position as the ground pattern  2110   b  of Layer 4 illustrated in (c) of  FIG. 11 . 
     Meanwhile, the ground patterns  2110   c  and  2110   d  of Layers 3 and 2 of (d) and (e) of  FIG. 11  may have different shapes. In this regard, since no signal transmission lines are disposed in Layers 3 and 2, the ground patterns  2110   c  and  2110   d  of Layers 3 and 2 may be optimized for optimal RF performance. Therefore, according to the present disclosure, the ground patterns  2110  and  2110   b  may have the same shape and be disposed at the same position on Layers 5 and 4 where the signal transmission lines are disposed. In addition, the ground patterns  2110   c  and  2110   d  may be optimized on Layers 3 and 2 where the signal transmission lines are not disposed, thereby implementing optimal RF performance in terms of signal loss and signal distortion. 
     Referring to (f) of  FIG. 11 , only the ground pattern  2110   e  from which the ground is not removed may exist on Layer 1 of the first multilayered PCB  2100 . 
       FIG. 12  is a planar view illustrating each of a plurality of layers of an antenna PCB according to the present disclosure. Referring to (a) of  FIG. 12 , the plurality of signal transmission lines  2220  may be disposed between ground patterns  2210  on Layer 3 of the second multilayered PCB  2200  that is the antenna PCB. Meanwhile, referring to (b) of  FIG. 12 , the plurality of signal transmission lines  2220  may also be disposed between ground patterns  2210   b  on Layer 2 of the second multilayered PCB  2200 . 
     Specifically, referring to (a) to (c) of  FIG. 12 , the signal pads  2121  of Layers 3 and 2 of the first multilayered PCB  2200  may be formed on the same position. On Layers 3 and 2, the signal lines  2122  of the signal transmission line  2120  may be disposed respectively on the left and right sides with respect to the signal pad  2121 . Signals may be transmitted between the connector  1120  and the antennas  1110  through the signal lines  2222  disposed on the left and right sides with respect to the signal pad  2221 . 
     Meanwhile, referring to (c) of  FIG. 12 , windows from which the ground patterns are removed may be formed on Layer 1 to have the same shape as those on Layers 2 and 3. In this regard, as the windows formed on Layers 1 to 3 have the same shape and are disposed on the same position, the radiation characteristics of the antennas  1110  can be improved. In addition, when the window formed on Layers 1 to 3 is formed by removing even a dielectric as well as a metal, heat generation due to a power amplifier and the like can be eliminated. 
       FIG. 13A  is a view illustrating a configuration related to optimizing a length of a signal transmission line inside a multilayered PCB connected to a connector according to the present disclosure. 
     In this regard, as aforementioned, the signal transmission lines  2120  and  2220  may be disposed on the first multilayered PCB  2100  and the second multilayered PCB  2200  between the plurality of ground patterns  2110  and  2210 . Referring to (a) of  FIG. 13A , in the first multilayered PCB  2100  that is the RFIC PCB, the plurality of signal transmission lines  2120  may be disposed between the plurality of ground patterns  2110 . However, the configuration of (a) of  FIG. 13A  may not be limited to the first multilayered PCB  2100  but may also be applicable to the second multilayered PCB  2200 . 
     In the plurality of signal transmission lines  2120  of (a) of  FIG. 13A , the length of the signal line  2122  may be the same as the length of the ground pad  2111 . In this regard, when the length of the signal line  2122  is longer than the length of the ground pad  2111 , some signal lines cannot be implemented in the CPW structure. On the other hand, when the length of the signal line  2122  is shorter than the length of the ground pad  2111 , all signal lines may be implemented in the CPW structure, thereby reducing signal loss in the millimeter-wave band. As the length of the signal line  2122  increases, a contact with the connector  1120  can be stable and the signal loss can be reduced. Accordingly, in the plurality of signal transmission lines  2120 , the structure in which the length of the signal line  2122  is equal to the length of the ground pad  2211  can be optimal in terms of RF signal loss and distortion. 
     On the other hand, (b) of  FIG. 13A  illustrates a three-dimensional structural view in the case where the length of the signal transmission line inside the multilayered PCB is the same as the length of the ground pad  2211 . As described above, the RF signal loss and distortion can be minimized by the structure in which the length of the signal transmission line inside the multilayered PCB is the same as the length of the ground pad  2211 . 
       FIG. 13B  is a view illustrating comparison results between a case of an optimized arrangement of a ground region and vias inside the multilayered PCB according to the present disclosure ( FIG. 13A ) and a case of a non-optimized arrangement ( FIG. 13B ). Referring to  FIG. 13B , when the arrangement of the vias and the ground region inside the multilayered PCB is not optimized, a ground plane on which the vias are disposed may be present on another layer on the same plane as the signal transmission line inside the multilayered PCB. On the other hand, when the arrangement of the ground region and the vias inside the multilayered PCB are optimized, the ground plane on which the vias are disposed on the bottom of the same plane as the signal transmission line may be removed. 
     Meanwhile, referring to  FIGS. 5 and 13B , the optimal arrangement of the ground region and the vias for the first multilayered PCB  2100  corresponding to a six-layer PCB is illustrated. However, the present disclosure is not limited thereto, and may also be applicable to the first multilayered PCB  2200  corresponding to a three-layer PCB. 
       FIGS. 13C and 13D  are graphs showing simulation results according to the case of the optimized arrangement of the ground region and the vias inside the multilayered PCB according to the present disclosure and the case of the non-optimized arrangement. 
     Specifically,  FIG. 13C  shows insertion loss (IL) at eight terminals when the arrangement of the ground region and the vias inside the multilayered PCB is optimized. On the other hand,  FIG. 13D  illustrates the insertion loss (IL) at the eight terminals when a ground surface with vias is present on another layer on the same plane as the signal transmission line inside the multilayered PCB according to the present disclosure. 
     On the other hand, as illustrated in  FIGS. 13B and 13C , it can be seen that the IL characteristics are good in 23 to 44 GHz bands when the arrangement of the ground region and the vias inside the multilayered PCB is optimized. On the other hand, as illustrated in  FIGS. 13B and 13D , it can be seen that the IL characteristics in the 23 to 44 GHz bands are degraded when a ground plane with vias disposed on another layer on the same plane as the signal transmission line inside the multilayered PCB is present. 
     Specifically, Table 2 shows IL, isolation, and RL values according to whether or not the arrangement of the vias and the ground region inside the multilayered PCB according to the present disclosure is optimized. Here, the values in Table  2  represent the IL values, isolation values, and RL values in the case of the worst performance in the 23 to 44 GHz bands. 
     
       
         
           
               
               
               
               
             
               
                   
                 TABLE 2 
               
               
                   
                   
               
               
                   
                   
                   
                 Worst 
               
               
                   
                 Worst IL 
                 Worst RL 
                 Isolation 
               
               
                   
                 [dB] 
                 [dB] 
                 [dB] 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 No optimization of arrangement 
                 −1.9 
                 −8.8 
                 16.6 
               
               
                 of ground region and vias 
               
               
                 Optimization of arrangement 
                 −1.4 
                 −11.3 
                 17.0 
               
               
                 of ground region and vias 
               
               
                 (Proposed structure) 
               
               
                   
               
            
           
         
       
     
     Therefore, referring to Table 2, by optimizing the arrangement of the ground region and the vias, the connector module according to the present disclosure has very good RF characteristics in that the IL values are 1.4 dB or less in the 23 to 44 GHz bands. On the other hand, when the arrangement of the ground region and vias is not optimized, there is a problem in that the IL values increase up to 1.9 dB in the 23 to 44 GHz bands. 
     In addition, as the vias and ground patterns are added, the connector module according to the present disclosure has very good RF characteristics in that the RL values are −10 hB or less and the isolation values are 17 dB or more in the 23 to 44 GHz bands. 
       FIG. 14  is a view illustrating a configuration related to an optimization of a window region, from which a metal pattern is removed, in a multilayered PCB connected to a connector according to the present disclosure. 
     As illustrated in  FIG. 5  and (a) of  FIG. 14 , the size of the window region between the signal lines  2122  and  2222  or the window region between the ground patterns  2110  and  2120  can be optimized in the millimeter-wave band in terms of RF signal loss and distortion. In this regard, an interval W Window between the plurality of ground lines  2112  and  2212  may be set to be the same as a pin interval of the connector  1120 . Therefore, it may be necessary to optimize a length L_Window of the window region including the ground lines  2112  and  2212  and the plurality of ground pads  2111  and  2211  connecting the ground lines  2112  and  2212 . 
     On the other hand, referring to (b) of  FIG. 14 , in relation to a lower bound of the widths of the ground lines  2112  and  2212 , when a line-width is narrow, unwanted radiation due to high impedance may occur. However, since the ground lines  2112  and  2212  themselves do not transmit signals, the lower bound of the widths of the ground lines  2112  and  2212  does not matter much. Accordingly, the widths of the ground lines  2112  and  2212  may be implemented to be as narrow as possible within the limit in which unwanted radiation does not occur. For example, the width of the ground lines  2112  and  2212  may be implemented as 75 μm, but is not limited thereto and may vary depending on applications. 
     The foregoing description has been given of an electronic device having a connector for connecting antennas and a transceiver circuit according to the present disclosure. Meanwhile, technical effects of the electronic device having the connector for connecting the antennas and the transceiver circuit according to the present disclosure will be described as follows. 
     According to at least one implementation of the present disclosure, when vertically connecting antennas and a transceiver circuit in a millimeter-wave band, a connector that is capable of reducing insertion loss by optimizing circuit patterns around vertical vias can be provided. 
     In addition, according to at least one implementation of the present disclosure, a connector that is capable of reducing insertion loss due to radiation by vertical vias when a length of the vertical vias increases due to a vertical connection between antennas and a transceiver circuit in a millimeter-wave band, and an electronic device having the same can be provided. 
     Further scope of applicability of the present disclosure will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiment of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will be apparent to those skilled in the art. 
     In relation to the aforementioned present disclosure, design and operations of a connector device for connecting antennas and a transceiver circuit disposed on multilayered PCBs can be implemented as computer-readable codes in a program-recorded medium. The computer-readable medium may include all types of recording devices each storing data readable by a computer system. Examples of such computer-readable media may include hard disk drive (HDD), solid state disk (SSD), silicon disk drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage element and the like. Also, the computer-readable medium may also be implemented as a format of carrier wave (e.g., transmission via an Internet). The computer may include the controller  180 ,  1400  of the terminal. Therefore, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its scope as defined in the appended claims, Therefore, all changes and modifications that fall within the metes and bounds of the claims, or equivalents of such metes and bounds are therefore intended to be embraced by the appended claims.