Patent Publication Number: US-2023138278-A1

Title: Electronic device including duplexer including filter having characteristic that is adaptively changed according to state

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of International Application No. PCT/KR2022/013399 designating the United States, filed on Sep. 6, 2022, in the Korean Intellectual Property Receiving Office and claiming priority to Korean Patent Application No. 10-2021-0147404, filed on Oct. 29, 2021, and to Korean Patent Application No. 10-2021-0158071, filed on Nov. 16, 2021, the disclosures of which are incorporated by reference herein in their entireties. 
    
    
     BACKGROUND 
     Field 
     Various example embodiments relate to an electronic device including a duplexer including a filter having a characteristic that is adaptively changed according to a state. 
     Description of Related Art 
     An electronic device may comprise a radio frequency front end (RFFE) including a duplexer for supporting bi-directional communication via a single path. The duplexer may include a plurality of filters to separate a signal transmitted through an antenna and a signal received through the antenna from each other. 
     SUMMARY 
     According to an example embodiment, an electronic device may comprise an antenna, a radio frequency front end (RFFE) comprising a first duplexer comprising a first filter passing a first signal in uplink frequency range of a first frequency band and a second filter passing a second signal in downlink frequency range of the first frequency band and a fourth signal in downlink frequency range of a second frequency band partially overlapping the downlink frequency range of the first frequency band and a second duplexer comprising a first filter passing a third signal in uplink frequency range of the second frequency band and a fifth signal in uplink frequency range of a third frequency band and a second filter passing a sixth signal in downlink frequency range of the third frequency band that is separate from the downlink frequency range of the first frequency band and partially overlaps the downlink frequency range of the second frequency band, and at least one processor, operatively coupled with the RFFE, wherein the at least one processor may be configured to, while both the first duplexer and the second duplexer are electrically connected with the antenna, change a cut-off frequency of the second filter in the first duplexer to a first frequency cutting off the sixth signal in portion of the downlink frequency range of the third frequency band partially overlapping the downlink frequency range of the second frequency band or change a cut-off frequency of the second filter in the second duplexer to a second frequency cutting off the fourth signal in portion of the downlink frequency range of the second frequency band partially overlapping the downlink frequency range of the third frequency band. 
     According to an example embodiment, an electronic device may comprise an antenna, a radio frequency front end (RFFE) comprising a switch, a first duplexer comprising a first filter passing a first signal in uplink frequency range of a first frequency band and a second filter passing a second signal in downlink frequency range of the first frequency band and a fourth signal in downlink frequency range of a second frequency band partially overlapping the downlink frequency range of the first frequency band and being connectable with the antenna via the switch, a second duplexer comprising a first passing a third signal in uplink frequency range of the second frequency band and a fifth signal in uplink frequency range of a third frequency band and a second filter passing a sixth signal in downlink frequency range of the third frequency band that is separate from the downlink frequency range of the first frequency band and partially overlaps the downlink frequency range of the second frequency band and being connectable with the antenna via the switch, a first impedance matching circuit, electrically connected with a first electrical path between the switch and the first duplexer, and a second impedance matching circuit, electrically connected with a second electrical path between the switch and the second duplexer, and at least one processor, operatively coupled with the RFFE, wherein the at least one processor may be configured to, while both the first duplexer and the second duplexer are connected with the antenna via the switch, change a center frequency of the second filter in the first duplexer to a first frequency cutting off the sixth signal in portion of the downlink frequency range of the third frequency band partially overlapping the downlink frequency range of the second frequency band by using the first impedance matching circuitry or change a center frequency of the second filter in the second duplexer to a second frequency cutting off the fourth signal in portion of the downlink frequency range of the second frequency band partially overlapping the downlink frequency range of the third frequency band by using the second impedance matching circuitry. 
     According to an example embodiment, an electronic device may comprise an antenna, a radio frequency front end (RFFE) comprising, a switch, a first duplexer comprising a first filter passing a first signal in uplink frequency range of a first frequency band and a second filter passing a second signal in downlink frequency range of the first frequency band and a fourth signal in downlink frequency range of a second frequency band partially overlapping the downlink frequency range of the first frequency band and being connectable with the antenna via the switch, a second duplexer comprising a first filter passing a third signal in uplink frequency range of the second frequency band and a fifth signal in uplink frequency range of a third frequency band and a second filter passing a sixth signal in downlink frequency range of the third frequency band that is separate from the downlink frequency range of the first frequency band and partially overlaps the downlink frequency range of the second frequency band and being connectable with the antenna via the switch, a first impedance matching circuit, electrically connected with a second filter in the first duplexer from among the first filter in the first duplexer and the second filter in the first duplexer, and a second impedance matching circuit, electrically connected with a second filter in the second duplexer from among the first filter in the second duplexer and the second filter in the second duplexer, and at least one processor, operatively coupled with the RFFE, wherein the at least one processor may be configured to, while both the first duplexer and the second duplexer are connected with the antenna via the switch, change a characteristic of a filter from among the second filter in the first duplexer and the second filter in the second duplexer by using an impedance matching circuit from among the first impedance matching circuit and the second impedance matching circuit. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other aspects, features and advantages of certain embodiments of the present disclosure will be more apparent from the following detailed description, taken in conjunction with the accompanying drawings, in which: 
         FIG.  1    is a block diagram of an electronic device in a network environment according to various example embodiments. 
         FIG.  2    is a block diagram of an electronic device for supporting legacy network communication and 5G network communication according to various example embodiments. 
         FIG.  3    is a simplified block diagram of an electronic device according to an example embodiment. 
         FIG.  4    is a graph illustrating a pass band of each of filters in duplexers in RFFE of an electronic device according to an example embodiment. 
         FIGS.  5 A and  5 B  illustrate examples of a connection relationship between a filter in each of duplexers of a radio frequency front end (RFFE) of an electronic device and an impedance matching circuit of the RFFE according to an example embodiment. 
         FIG.  6    illustrates an example of controlling an impedance matching circuit of an RFFE in an electronic device according to an example embodiment. 
         FIG.  7    is a graph illustrating a pass band of a filter changed based on control of an impedance matching circuit of an RFFE of an electronic device according to an example embodiment. 
         FIG.  8    illustrates an example of controlling another impedance matching circuit of RFFE in an electronic device according to an example embodiment. 
         FIG.  9    is a graph illustrating a pass band of a filter changed based on control of another impedance matching circuit of RFFE in an electronic device according to an example embodiment. 
         FIG.  10    illustrates an example of state of RFFEs in an electronic device when a signal is transmitted and received via an E-UTRA new radio dual connectivity (EN-DC) according to an example embodiment. 
         FIG.  11    illustrates an example of maintaining a pass band of each of filters in duplexers of RFFE of an electronic device according to an example embodiment. 
         FIG.  12    illustrates another example of maintaining a pass band of each of filters in duplexers of RFFE of an electronic device according to an example embodiment. 
     
    
    
     DETAILED DESCRIPTION 
       FIG.  1    is a block diagram illustrating an electronic device  101  in a network environment  100  according to various example embodiments. 
     Referring to  FIG.  1   , the electronic device  101  in the network environment  100  may communicate with an electronic device  102  via a first network  198  (e.g., a short-range wireless communication network), or at least one of an electronic device  104  or a server  108  via a second network  199  (e.g., a long-range wireless communication network). According to an embodiment, the electronic device  101  may communicate with the electronic device  104  via the server  108 . According to an embodiment, the electronic device  101  may include a processor  120 , memory  130 , an input module  150 , a sound output module  155 , a display module  160 , an audio module  170 , a sensor module  176 , an interface  177 , a connecting terminal  178 , a haptic module  179 , a camera module  180 , a power management module  188 , a battery  189 , a communication module  190 , a subscriber identification module (SIM)  196 , or an antenna module  197 . In some embodiments, at least one of the components (e.g., the connecting terminal  178 ) may be omitted from the electronic device  101 , or one or more other components may be added in the electronic device  101 . In some embodiments, some of the components (e.g., the sensor module  176 , the camera module  180 , or the antenna module  197 ) may be implemented as a single component (e.g., the display module  160 ). Each “module” herein may include circuitry. 
     The processor  120  may execute, for example, software (e.g., a program  140 ) to control at least one other component (e.g., a hardware or software component) of the electronic device  101  coupled with the processor  120 , and may perform various data processing or computation. According to one embodiment, as at least part of the data processing or computation, the processor  120  may store a command or data received from another component (e.g., the sensor module  176  or the communication module  190 ) in volatile memory  132 , process the command or the data stored in the volatile memory  132 , and store resulting data in non-volatile memory  134  (which may include internal memory  136  and/or external memory  138 ). According to an embodiment, the processor  120  may include a main processor  121  (e.g., a central processing unit (CPU) or an application processor (AP)), or an auxiliary processor  123  (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operable independently from, or in conjunction with, the main processor  121 . For example, when the electronic device  101  includes the main processor  121  and the auxiliary processor  123 , the auxiliary processor  123  may be adapted to consume less power than the main processor  121 , or to be specific to a specified function. The auxiliary processor  123  may be implemented as separate from, or as part of the main processor  121 . Each processing unit herein preferably includes at least one processor. Each processor herein comprises processing circuitry. 
     The auxiliary processor  123  may control at least some of functions or states related to at least one component (e.g., the display module  160  including a display, the sensor module  176  including at least one sensor, or the communication module  190  including communication circuitry) among the components of the electronic device  101 , instead of the main processor  121  while the main processor  121  is in an inactive (e.g., sleep) state, or together with the main processor  121  while the main processor  121  is in an active state (e.g., executing an application). According to an embodiment, the auxiliary processor  123  (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., the camera module  180  or the communication module  190 ) functionally related to the auxiliary processor  123 . According to an embodiment, the auxiliary processor  123  (e.g., the neural processing unit) may include a hardware structure specified for artificial intelligence model processing. An artificial intelligence model may be generated by machine learning. Such learning may be performed, e.g., by the electronic device  101  where the artificial intelligence is performed or via a separate server (e.g., the server  108 ). Learning algorithms may include, but are not limited to, e.g., supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include a plurality of artificial neural network layers. The artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), deep Q-network or a combination of two or more thereof but is not limited thereto. The artificial intelligence model may, additionally or alternatively, include a software structure other than the hardware structure. 
     The memory  130  may store various data used by at least one component (e.g., the processor  120  or the sensor module  176 ) of the electronic device  101 . The various data may include, for example, software (e.g., the program  140 ) and input data or output data for a command related thereto. The memory  130  may include the volatile memory  132  or the non-volatile memory  134 . 
     The program  140  may be stored in the memory  130  as software, and may include, for example, an operating system (OS)  142 , middleware  144 , or an application  146 . 
     The input module  150  may receive a command or data to be used by another component (e.g., the processor  120 ) of the electronic device  101 , from the outside (e.g., a user) of the electronic device  101 . The input module  150  may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen). 
     The sound output module  155  may output sound signals to the outside of the electronic device  101 . The sound output module  155  may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as playing multimedia or playing record. The receiver may be used for receiving incoming calls. According to an embodiment, the receiver may be implemented as separate from, or as part of the speaker. 
     The display module  160  may visually provide information to the outside (e.g., a user) of the electronic device  101 . The display module  160  may include, for example, a display, a hologram device, or a projector and control circuitry to control a corresponding one of the display, hologram device, and projector. According to an embodiment, the display module  160  may include a touch sensor adapted to detect a touch, or a pressure sensor adapted to measure the intensity of force incurred by the touch. 
     The audio module  170  may convert a sound into an electrical signal and vice versa. According to an embodiment, the audio module  170  may obtain the sound via the input module  150 , or output the sound via the sound output module  155  or a headphone of an external electronic device (e.g., an electronic device  102 ) directly (e.g., wiredly) or wirelessly coupled with the electronic device  101 . 
     The sensor module  176  may detect an operational state (e.g., power or temperature) of the electronic device  101  or an environmental state (e.g., a state of a user) external to the electronic device  101 , and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module  176  may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor. 
     The interface  177  may support one or more specified protocols to be used for the electronic device  101  to be coupled with the external electronic device (e.g., the electronic device  102 ) directly (e.g., wiredly) or wirelessly. According to an embodiment, the interface  177  may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface. 
     A connecting terminal  178  may include a connector via which the electronic device  101  may be physically connected with the external electronic device (e.g., the electronic device  102 ). According to an embodiment, the connecting terminal  178  may include, for example, a HDMI connector, a USB connector, a SD card connector, or an audio connector (e.g., a headphone connector). 
     The haptic module  179  may convert an electrical signal into a mechanical stimulus (e.g., a vibration or a movement) or electrical stimulus which may be recognized by a user via his tactile sensation or kinesthetic sensation. According to an embodiment, the haptic module  179  may include, for example, a motor, a piezoelectric element, or an electric stimulator. 
     The camera module  180  may capture a still image or moving images. According to an embodiment, the camera module  180  may include one or more lenses, image sensors, image signal processors, or flashes. 
     The power management module  188  may manage power supplied to the electronic device  101 . According to one embodiment, the power management module  188  may be implemented as at least part of, for example, a power management integrated circuit (PMIC). 
     The battery  189  may supply power to at least one component of the electronic device  101 . According to an embodiment, the battery  189  may include, for example, a primary cell which is not rechargeable, a secondary cell which is rechargeable, or a fuel cell. 
     The communication module  190  may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device  101  and the external electronic device (e.g., the electronic device  102 , the electronic device  104 , or the server  108 ) and performing communication via the established communication channel. The communication module  190  may include one or more communication processors that are operable independently from the processor  120  (e.g., the application processor (AP)) and supports a direct (e.g., wired) communication or a wireless communication. According to an embodiment, the communication module  190  may include a wireless communication module  192  (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module  194  (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). A corresponding one of these communication modules may communicate with the external electronic device via the first network  198  (e.g., a short-range communication network, such as Bluetooth™, wireless-fidelity (Wi-Fi) direct, or infrared data association (IrDA)) or the second network  199  (e.g., a long-range communication network, such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., LAN or wide area network (WAN)). These various types of communication modules may be implemented as a single component (e.g., a single chip), or may be implemented as multi components (e.g., multi chips) separate from each other. The wireless communication module  192  may identify and authenticate the electronic device  101  in a communication network, such as the first network  198  or the second network  199 , using subscriber information (e.g., international mobile subscriber identity (IMSI)) stored in the subscriber identification module  196 . 
     The wireless communication module  192  may support a 5G network, after a 4G network, and next-generation communication technology, e.g., new radio (NR) access technology. The NR access technology may support enhanced mobile broadband (eMBB), massive machine type communications (mMTC), or ultra-reliable and low-latency communications (URLLC). The wireless communication module  192  may support a high-frequency band (e.g., the mmWave band) to achieve, e.g., a high data transmission rate. The wireless communication module  192  may support various technologies for securing performance on a high-frequency band, such as, e.g., beamforming, massive multiple-input and multiple-output (massive MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module  192  may support various requirements specified in the electronic device  101 , an external electronic device (e.g., the electronic device  104 ), or a network system (e.g., the second network  199 ). According to an embodiment, the wireless communication module  192  may support a peak data rate (e.g., 20 Gbps or more) for implementing eMBB, loss coverage (e.g., 164 dB or less) for implementing mMTC, or U-plane latency (e.g., 0.5 ms or less for each of downlink (DL) and uplink (UL), or a round trip of 1 ms or less) for implementing URLLC. 
     The antenna module  197  may transmit or receive a signal or power to or from the outside (e.g., the external electronic device) of the electronic device  101 . According to an embodiment, the antenna module  197  may include an antenna including a radiating element composed of a conductive material or a conductive pattern formed in or on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment, the antenna module  197  may include a plurality of antennas (e.g., array antennas). In such a case, at least one antenna appropriate for a communication scheme used in the communication network, such as the first network  198  or the second network  199 , may be selected, for example, by the communication module  190  (e.g., the wireless communication module  192 ) from the plurality of antennas. The signal or the power may then be transmitted or received between the communication module  190  and the external electronic device via the selected at least one antenna. According to an embodiment, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element may be additionally formed as part of the antenna module  197 . 
     According to various embodiments, the antenna module  197  may form a mmWave antenna module. According to an embodiment, the mmWave antenna module may include a printed circuit board, a RFIC disposed on a first surface (e.g., the bottom surface) of the printed circuit board, or adjacent to the first surface and capable of supporting a designated high-frequency band (e.g., the mmWave band), and a plurality of antennas (e.g., array antennas) disposed on a second surface (e.g., the top or a side surface) of the printed circuit board, or adjacent to the second surface and capable of transmitting or receiving signals of the designated high-frequency band. 
     At least some of the above-described components may be coupled mutually and communicate signals (e.g., commands or data) therebetween via an inter-peripheral communication scheme (e.g., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)). 
     According to an embodiment, commands or data may be transmitted or received between the electronic device  101  and the external electronic device  104  via the server  108  coupled with the second network  199 . Each of the electronic devices  102  or  104  may be a device of a same type as, or a different type, from the electronic device  101 . According to an embodiment, all or some of operations to be executed at the electronic device  101  may be executed at one or more of the external electronic devices  102 ,  104 , and/or  108 . For example, if the electronic device  101  should perform a function or a service automatically, or in response to a request from a user or another device, the electronic device  101 , instead of, or in addition to, executing the function or the service, may request the one or more external electronic devices to perform at least part of the function or the service. The one or more external electronic devices receiving the request may perform the at least part of the function or the service requested, or an additional function or an additional service related to the request, and transfer an outcome of the performing to the electronic device  101 . The electronic device  101  may provide the outcome, with or without further processing of the outcome, as at least part of a reply to the request. To that end, a cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device  101  may provide ultra low-latency services using, e.g., distributed computing or mobile edge computing. In another embodiment, the external electronic device  104  may include an internet-of-things (IoT) device. The server  108  may be an intelligent server using machine learning and/or a neural network. According to an embodiment, the external electronic device  104  or the server  108  may be included in the second network  199 . The electronic device  101  may be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology or IoT-related technology. 
       FIG.  2    is a block diagram  200  of the electronic device  101  for supporting legacy network communication and 5G network communication, according to various example embodiments. Referring to  FIG.  2   , the electronic device  101  may include a first communication processor  212 , a second communication processor  214 , a first radio frequency integrated circuit (RFIC)  222 , a second RFIC  224 , and a third RFIC  226 , a fourth RFIC  228 , a first radio frequency front end (RFFE)  232 , a second RFFE  234 , a first antenna module  242 , a second antenna module  244 , and an antenna  248 . Each antenna module herein (e.g., see  242 ,  244 , and  246 ) includes an antenna. The electronic device  101  may further include the processor  120  and the memory  130 . The second network  199  may include a first cellular network  292  and a second cellular network  294 . According to another embodiment, the electronic device  101  may further include at least one of the components illustrated in  FIG.  1   , and the second network  199  may further include at least one other network. According to an embodiment, the first communication processor  212 , the second communication processor  214 , the first RFIC  222 , the second RFIC  224 , the fourth RFIC  228 , the first RFFE  232 , and the second RFFE  234  may constitute at least a part of a wireless communication module  192  (including communication circuitry). According to another embodiment, the fourth RFIC  228  may be omitted or may be included as a part of the third RFIC  226 . 
     The first communication processor  212  may support the establishment of a communication channel of a band to be used for wireless communication with the first cellular network  292  and legacy network communication through the established communication channel According to various embodiments, the first cellular network  292  may be a legacy network including a 2nd generation (2G), 3rd generation (3G), 4th generation (4G), and/or long-term evolution (LTE) network. The second communication processor  214  may support the establishment of a communication channel corresponding to a specified band (e.g., approximately 6 GHz to 60 GHz) among bands to be used for wireless communication with the second cellular network  294 , and 5G network communication through the established communication channel According to various embodiments, the second cellular network  294  may be a 5G network defined by 3GPP. Additionally, according to an embodiment, the first communication processor  212  or the second communication processor  214  may support the establishment of a communication channel corresponding to another specified band (e.g., approximately 6 GHz or less) among bands to be used for wireless communication with the second cellular network  294 , and 5G network communication through the established communication channel According to an embodiment, the first communication processor  212  and the second communication processor  214  may be implemented in a single chip or a single package. According to various embodiments, the first communication processor  212  or the second communication processor  214  may be formed with the processor  120 , the auxiliary/coprocessor  123  of  FIG.  1   , or the communication module  190  (including communication circuitry) in a single chip or a single package. 
     Upon transmission, the first RFIC  222  may convert a baseband signal generated by the first communication processor  212  into a radio frequency (RF) signal of approximately 700 MHz to approximately 3 GHz used in the first cellular network  292  (e.g., a legacy network). Upon reception, an RF signal may be obtained from the first cellular network  292  (e.g., a legacy network) through an antenna (e.g., the first antenna module  242 , including at least one antenna), and may be preprocessed through an RFFE (e.g., the first RFFE  232 ). The first RFIC  222  may convert the preprocessed RF signal into a baseband signal so as to be processed by the first communication processor  212 . 
     Upon transmission, the second RFIC  224  may convert a baseband signal generated by the first communication processor  212  or the second communication processor  214  into an RF signal (hereinafter, referred to as a 5G Sub6 RF signal) of the Sub6 band (e.g., approximately 6 GHz or less) used in the second cellular network  294  (e.g., the 5G network). Upon reception, a 5G Sub6 RF signal may be obtained from the second cellular network  294  (e.g., the 5G network) through an antenna (e.g., the second antenna module  244 , including at least one antenna), and may be preprocessed through an RFFE (e.g., the second RFFE  234 ). The second RFIC  224  may convert the preprocessed 5G Sub6 RF signal into a baseband signal so as to be processed by a corresponding one of the first communication processor  212  or the second communication processor  214 . 
     The third RFIC  226  may convert a baseband signal generated by the second communication processor  214  into an RF signal (hereinafter, referred to as a 5G Above6 RF signal) of the 5G Above6 band (e.g., approximately 6 GHz to approximately 60 GHz) to be used in the second cellular network  294  (e.g., the 5G network). Upon reception, a 5G Above6 RF signal may be obtained from the second cellular network  294  (e.g., the 5G network) through an antenna (e.g., the antenna  248 ), and may be preprocessed through the third RFFE  236 . For example, the third RFFE  236  may perform preprocessing of the signal by using at least one phase shifter  238 . The third RFIC  226  may convert the preprocessed 5G Above6 RF signal into a baseband signal so as to be processed by the second communication processor  214 . According to an embodiment, the third RFFE  236  may be formed as a part of the third RFIC  226 . 
     According to an example embodiment, the electronic device  101  may include the fourth RFIC  228  separately from or at least as a part of the third RFIC  226 . In this case, the fourth RFIC  228  may convert the baseband signal generated by the second communication processor  214  into an RF signal (hereinafter, referred to as an intermediate frequency (IF) signal) of an intermediate frequency band (e.g., approximately 9 GHz to approximately 11 GHz), and then transmit the IF signal to the third RFIC  226 . The third RFIC  226  may convert the IF signal into a 5G Above6 RF signal. Upon reception, a 5G Above6 RF signal may be received from the second cellular network  294  (e.g., the 5G network) through an antenna (e.g., the antenna  248 ), and may be converted into an IF signal by the third RFIC  226 . The fourth RFIC  228  may convert the IF signal into the baseband signal so as to be processed by the second communication processor  214 . 
     According to an example embodiment, the first RFIC  222  and the second RFIC  224  may be implemented as a single chip or at least a part of a single package. According to an embodiment, the first RFFE  232  and the second RFFE  234  may be implemented as a single chip or at least a part of a single package. According to an embodiment, at least one of the first antenna module  242  or the second antenna module  244  may be omitted or combined with another antenna module to process RF signals of a plurality of corresponding bands. 
     According to an example embodiment, the third RFIC  226  and the antenna  248  may be disposed on the same substrate to form a third antenna module  246 . For example, the wireless communication module  192  or the processor  120  may be disposed on a first substrate (e.g., a main PCB). In this case, the third RFIC  226  may be disposed in a partial region (e.g., the lower surface) of a second substrate (e.g., a sub PCB) separate from the first substrate, and the antenna  248  may be disposed in another partial region (e.g., the upper surface) to form the third antenna module  246 . According to an embodiment, the antenna  248  may include, for example, an antenna array that may be used for beamforming. By disposing the third RFIC  226  and the antenna  248  on the same substrate, it is possible to reduce the length of the transmission line therebetween. This, for example, may reduce the loss (e.g., attenuation) of a signal in a high frequency band (e.g., approximately 6 GHz to approximately 60 GHz) used for 5G network communication by the transmission line. Accordingly, the electronic device  101  may improve the quality or speed of communication with the second cellular network  294  (e.g., the 5G network). 
     The second cellular network  294  (e.g., the 5G network) may be operated independently of (e.g., Stand-Alone (SA)) or operated to be connected to (e.g., Non-Stand Alone (NSA)) the first cellular network  292  (e.g., the legacy network). For example, in the 5G network, there may be only an access network (e.g., 5G radio access network (RAN) or next-generation RAN (NG RAN)) and no core network (e.g., next-generation core (NGC)). In this case, after accessing the access network of the 5G network, the electronic device  101  may access an external network (e.g., the Internet) under the control of a core network (e.g., evolved packed core (EPC)) of the legacy network. Protocol information for communication with the legacy network (e.g., LTE protocol information) or protocol information for communication with the 5G network (e.g., New Radio (NR) protocol information) may be stored in the memory  230  and may be accessed by other components (e.g., the processor  120 , the first communication processor  212 , or the second communication processor  214 ). 
     An electronic device may transmit or receive a signal on each of a plurality of frequency bands. A first frequency band from among the plurality of frequency bands may partially overlap a second frequency band from among the plurality of frequency bands. Although the first frequency band and the second frequency band partially overlap each other, including a duplexer for each of the plurality of frequency bands in a radio frequency front end (RFFE) of the electronic device may cause an increase in the size of the RFFE. 
     The electronic device according to an example embodiment may reduce number of duplexers included in the RFFE by including a duplexer including a filter for passing a signal on the first frequency band and a signal on the second frequency band partially overlapping the first frequency band. 
       FIG.  3    is a simplified block diagram of an electronic device according to an example embodiment. Functional components indicated by the simplified block diagram may be included in the electronic device  101  illustrated in  FIG.  1   . 
       FIG.  4    is a graph illustrating a pass band of each of filters in duplexers in RFFE of an electronic device according to an example embodiment. 
       FIGS.  5 A and  5 B  illustrate examples of a connection relationship between a filter in each of duplexers of a radio frequency front end (RFFE) of an electronic device and an impedance matching circuit of the RFFE according to an example embodiment. 
       FIG.  6    illustrates an example of controlling an impedance matching circuit of an RFFE in an electronic device according to an example embodiment. 
       FIG.  7    is a graph illustrating a pass band of a filter changed based on control of an impedance matching circuit of an RFFE of an electronic device according to an example embodiment. 
       FIG.  8    illustrates an example of controlling another impedance matching circuit of RFFE in an electronic device according to an example embodiment. 
       FIG.  9    is a graph illustrating a pass band of a filter changed based on control of another impedance matching circuit of RFFE in an electronic device according to an example embodiment. 
       FIG.  10    illustrates an example of state of RFFEs in an electronic device when a signal is transmitted and received via an E-UTRA new radio dual connectivity (EN-DC) according to an example embodiment. 
       FIG.  11    illustrates an example of maintaining a pass band of each of filters in duplexers of RFFE of an electronic device according to an example embodiment. 
       FIG.  12    illustrates another example of maintaining a pass band of each of filters in duplexers of RFFE of an electronic device according to an example embodiment. 
     Referring to  FIG.  3   , an electronic device  101  may include a processor  300 , a first RFFE  310 , and a first antenna  358 . 
     In an example embodiment, the processor  300  may include the processor  120  illustrated in  FIG.  1   . In an embodiment, the processor  300  may include at least one of the processor  120  illustrated in  FIG.  2   , the first communication processor  212 , the second communication processor  214 , the first RFIC  222 , the second RFIC  224 , the third RFIC  226 , or the fourth RFIC  228 . 
     In an example embodiment, the first RFFE  310  may be operatively coupled to the first antenna  358 . In an embodiment, the first RFFE  310  may include a first duplexer  320  connectable to the first antenna  358  and a second duplexer  330  connectable to the first antenna  358 . 
     For example, a first duplexer  320  may include a first filter  321  passing a first signal within a first frequency band (e.g., uplink frequency range (e.g., 832 megahertz (MHz) to 862 MHz) of B20 of LTE standard of 3GPP (3rd generation partnership project) or n20 of NR standard of 3GPP). For example, the uplink frequency range of the first frequency band may be referred to as a transmit frequency range of the first frequency band in terms of a frequency range of a signal transmitted from the electronic device  101 . 
     For example, the first duplexer  320  may include a second filter  322  passing a second signal within a downlink frequency range (e.g., 791 MHz to 821 MHz) of the first frequency band and a fourth signal within a downlink frequency range (e.g., 773 MHz to 803 MHz) of a second frequency band (e.g., B28B of LTE standard of 3GPP or n28B of NR standard of 3GPP) partially overlapped with the downlink frequency range of the first frequency band. For example, when the downlink frequency range of the first frequency band is 791 MHz to 821 MHz, and the downlink frequency range of the second frequency band is 773 MHz to 803 MHz, the downlink frequency range of the first frequency band and the downlink frequency range of the second frequency band may overlap at 791 MHz to 803 MHz. For example, the downlink frequency range of the first frequency band and the downlink frequency range of the second frequency band may be referred to as a receive frequency range of the first frequency band and a receive frequency range of the second frequency band in terms of a frequency range of a signal received to the electronic device  101 . 
     For example, a second duplexer  330  may include a first filter  331  (referred to as a third filter) passing a third signal within an uplink frequency range (e.g., 718 MHz to 748 MHz) of the second frequency band and a fifth signal within an uplink frequency range (e.g., 703 MHz to 733 MHz) of the third frequency band (e.g., B28A of LTE standard of 3GPP or n28A of NR standard of 3GPP). For example, the uplink frequency range of the second frequency band and the uplink frequency range of the third frequency band may be referred to as a transmit frequency range of the second frequency band and a transmit frequency range of the third frequency band in terms of a frequency range of signal transmitted from the electronic device  101 . 
     For example, the second duplexer  330  may include a second filter  332  (possibly referred to as a fourth filter) passing a sixth signal within the downlink frequency range (e.g., 758 MHz to 788 MHz) of the third frequency band. For example, the downlink frequency range of the third frequency band may be separated from or spaced apart from the downlink frequency range of the first frequency band, different from the downlink frequency range of the second frequency band. For example, the downlink frequency range of the third frequency band may not overlap the downlink frequency range of the first frequency band, different from the downlink frequency range of the second frequency band. For example, the downlink frequency range of the third frequency band may partially overlap the downlink frequency range of the second frequency band. For example, since the downlink frequency range of the third frequency band partially overlaps the downlink frequency range of the second frequency band, the pass band of the second filter  322  may partially overlap the pass band of the second filter  332 . For example, the downlink frequency range of the third frequency band may be referred to as a receive frequency range of the third frequency band in terms of a frequency range of a signal received to the electronic device  101 . 
     According to an example embodiment, Since B28A of LTE standard and B28B of LTE standard are bands divided from B28 of LTE standard when the second frequency band is B28B of the LTE standard of the 3GPP (or N28B of NR standard of 3GPP) and the third frequency band is B28A of the LTE standard of the 3GPP (or N28A of NR standard of 3GPP), the second frequency band may be referred to as a portion of the frequency band, and the third frequency band may be referred to as another portion of the frequency band. However, it is not limited thereto. 
     In an example embodiment, since the pass band of the second filter  322  partially overlaps the pass band of the second filter  332 , the guard band may not be formed or not provided between the pass band of the second filter  322  and the pass band of the second filter  332 . For example, referring to  FIG.  4   , when the first frequency band is B20 of LTE standard of 3GPP (or n20 of NR standard of 3GPP), the second frequency band is B28B of LTE standard of 3GPP (or n28B of NR standard of 3GPP), and the third frequency band is B28A of LTE standard of 3GPP (or n28A of NR standard of 3GPP), a pass band of each of the first filter  321  in the first duplexer  320 , the second filter  322  in the first duplexer  320 , the first filter  331  in the second duplexer  330 , and the second filter  332  in the second duplexer  330  may be expressed as a graph  400 . A horizontal axis of the graph  400  is frequency (unit: MHz), a vertical axis of the graph  400  is loss and lines (e.g., line  410 , line  420 , line  430  and line  440 ) in the graph  400  represent a simplified pass band of the first filter  321 , a simplified pass band of the second filter  322 , a simplified pass band of the first filter  331 , and a pass band of the second filter  332 , respectively. For example, the loss may be represented by an S (scattering) parameter. For example, the S parameter may mean a ratio of an input voltage to an output voltage in a frequency distribution. For example, since each of the first duplexer  320  and the second duplexer  330  is a passive element, a maximum or high value of the S parameter in the graph  400  may be 0 decibel (dB). For example, as line  410 , the first filter  321  may have a first cut-off frequency  411  that is 832 MHz and a second cut-off frequency  412  that is 862 MHz, and may pass the first signal having a frequency between the first cut-off frequency  411  and the second cut-off frequency  412 . For example, as line  420 , the second filter  322  may have a first cut-off frequency  421  that is 773 MHz and a second cut-off frequency  422  that is 821 MHz, and may pass the second signal and the fourth signal having a frequency between the first cut-off frequency  421  and the second cut-off frequency  422 . For example, as line  430 , the first filter  331  may have a first cut-off frequency  431  that is 703 MHz and a second cut-off frequency  432  that is 748 MHz, and may pass the third signal and the fifth signal having a frequency between the first cut-off frequency  431  and the second cut-off frequency  432 . For example, as line  440 , the second filter  332  may have a first cut-off frequency  441  that is 758 MHz and a second cut-off frequency  442  that is 788 MHz, and may pass the sixth signal having a frequency between the first cut-off frequency  441  and the second cut-off frequency  442 . Since the first cut-off frequency  421  of the second filter  322  is a frequency lower than the second cut-off frequency  442  of the second filter  332 , the guard band may not be formed or not provided between the pass band of the second filter  322  and the pass band of the second filter  332 . Since the guard band may be not provided between the pass band of the second filter  322  and the pass band of the second filter  332 , the processor  300  may change a characteristic of the second filter  322  on a first designated condition or change a characteristic of the second filter  332  on a second designated condition. 
     Referring back to  FIG.  3   , in an example embodiment, the first RFFE  310  may further include a switch  340 . For example, the switch  340  may be controlled by the processor  300 . For example, the processor  300  may connect the first duplexer  320  and the first antenna  358  via the switch  340 , connect the second duplexer  330  and the first antenna  358 , connect both the first duplexer  320  and the second duplexer  330  and the first antenna  358 , or disconnect both the first duplexer  320  and the second duplexer  330  and the antenna  358 . For example, based on the control of the processor  300 , the switch  340  may have one state among a first state forming (or providing) a first electrical path  341  between the first duplexer  320  and the first antenna  358 , a second state forming a second electrical path  342  between the second duplexer  330  and the first antenna  358 , a third state forming both the first electrical path  341  and the second electrical path  342 , and a fourth state not forming both the first electrical path  341  and the second electrical path  342 . 
     In an example embodiment, the first RFFE  310  may further include a first impedance matching circuit  346  capable of changing or setting characteristic of the second filter  322  in the first duplexer  320  and a second impedance matching circuit  347  capable of changing or setting characteristic of the second filter  332  in the second duplexer  330 . 
     For example, the first impedance matching circuit  346  may be controlled by the processor  300 . For example, the processor  300  may change the characteristic of the second filter  322  by changing the cut-off frequency of the second filter  322  or changing the center frequency of the second filter  322  via the first impedance matching circuit  346 . An example of changing the characteristic of the second filter  322  via the first impedance matching circuit  346  will be described later with reference to  FIGS.  8  and  9   . 
     For example, the second impedance matching circuit  347  may be controlled by the processor  300 . For example, the processor  300  may change the characteristic of the second filter  332  by changing the cut-off frequency of the second filter  332  or changing the center frequency of the second filter  332  via the second impedance matching circuit  347 . An example of changing the characteristic of the second filter  332  via the second impedance matching circuit  347  will be described later with reference to  FIGS.  6  and  7   . 
     In an example embodiment, each of the first impedance matching circuit  346  and the second impedance matching circuit  347  may include at least one of at least one variable capacitor or at least one inductor. In an embodiment, each of the first impedance matching circuit  346  and the second impedance matching circuit  347  may include at least one of at least one capacitor or at least one variable inductor. However, it is not limited thereto. 
     In an example embodiment, the first impedance matching circuit  346  may be electrically connected to the first electrical path  348  between the first duplexer  320  and the switch  340 . For example, the first impedance matching circuit  346  may be electrically connected to the first duplexer  320  and electrically connected to the switch  340 . In an embodiment, the second impedance matching circuit  347  may be electrically connected to the second electrical path  349  between the second duplexer  330  and the switch  340 . For example, the second impedance matching circuit  347  may be electrically connected to the second duplexer  330  and electrically connected to the switch  340 . 
     In an example embodiment, the first impedance matching circuit  346  may be electrically connected to the second filter  322  of the first filter  321  and the second filter  322 , and the second impedance matching circuit  347  may be electrically connected to the second filter  332  of the first filter  331  and the second filter  332 . For example, referring to  FIG.  5 A , the first impedance matching circuit  346  may be electrically connected to a third electrical path  350  extending to/from or formed from the second filter  322  of the first filter  321  and the second filter  322 , instead of being electrically connected to the first electrical path  348  between the first duplexer  320  and the switch  340 , to prevent or reduce a change in a characteristic of the first filter  321  from being caused by a change in a characteristic of the second filter  322  by the first impedance matching circuit  346  electrically connected to the first duplexer  320 . Moreover, the first impedance matching circuit  346  electrically connected to the third electrical path  350  may be operatively coupled to a low noise amplifier (LNA)  352  illustrated in  FIG.  3   . The second impedance matching circuit  347  may be electrically connected to the fourth electrical path  351  extending to/from or formed from the second filter  332  of the first filter  331  and the second filter  332 , instead of being electrically connected to the second electrical path  349  between the second duplexer  330  and the switch  340 , to prevent or reduce a change in a characteristic of the first filter  331  from being caused by a change in a characteristic of the second filter  332  by the second impedance matching circuit  347  electrically connected to the second duplexer  330 . The second impedance matching circuit  347  electrically connected to the fourth electrical path  351  may be operatively coupled to the LNA  353  illustrated in  FIG.  3   , for example. For another example, referring to  FIG.  5 B , the first impedance matching circuit  346  may be electrically connected to the second filter  322  of the first filter  321  and the second filter  322 , instead of being electrically connected to the first electrical path  348  between the first duplexer  320  and the switch  340 , to prevent or reduce a change in a characteristic of the first filter  321  from being caused by a change in a characteristic of the second filter  322  by the first impedance matching circuit  346  electrically connected to the first duplexer  320 . For example, the first impedance matching circuit  346  illustrated in  FIG.  5 B  may be electrically connected to the second filter  322  in parallel with the third electrical path  350 . For example, the second impedance matching circuit  347  may be electrically connected to the second filter  332  of the first filter  331  and the second filter  332 , instead of being electrically connected to the second electrical path  349  between the second duplexer  330  and the switch  340 , to prevent or reduce a change in a characteristic of the first filter  331  from being caused by a change in a characteristic of the second filter  332  by the second impedance matching circuit  347  electrically connected to the second duplexer  330 . For example, the second impedance matching circuit  347  illustrated in  FIG.  5 B  may be electrically connected to the second filter  332  in parallel with the fourth electrical path  351 . 
     Referring back to  FIG.  3   , in an embodiment, the first RFFE  310  may further include an LNA  352  configured to amplify the second signal, or the fourth signal received from the first antenna  358  through the second filter  322  in the first duplexer  320 . The second signal or the fourth signal amplified by the LNA  352  may be provided to the processor  300 . 
     In an embodiment, the first RFFE  310  may further include LNA  353  configured to amplify the sixth signal received from the first antenna  358  through the second filter  332  in the second duplexer  330 . The sixth signal amplified by the LNA  353  may be provided to the processor  300 . 
     In an example embodiment, the first RFFE  310  may further include a power amplifier (PA)  354  configured to amplify signals obtained from the processor  300 . For example, the signals amplified by the PA  354  may be provided to the first filter  321  or the first filter  331 . In an embodiment, the first filter  321  may be configured to pass the first signal among the amplified signals. In an embodiment, the first filter  331  may be configured to pass the third signal among the amplified signals. In an embodiment, the first filter  331  may be configured to pass the fifth signal among the amplified signals. 
     In an example embodiment, the first RFFE  310  may further include a switch  355  to provide the amplified signals to a filter among the first filter  321  and the first filter  331 . The switch  355  may be controlled by the processor  300 . For example, the processor  300  may connect the PA  354  and the first filter  321 , connect the PA  354  and the first filter  331 , or disconnect both the PA  354 , the first filter  321 , and the first filter  331  via the switch  355 . For example, the switch  355  may have a first state (or providing) forming the first electrical path  356 , a second state forming the second electrical path  357 , and a third state disconnecting all of the first electrical path  356  and the second electrical path  357  based on the control of the processor  300 . 
     In an example embodiment, the electronic device  101  may further include a second RFFE  360  and a second antenna  390  to support at least one of transmit diversity or receive diversity. 
     In an example embodiment, the second RFFE  360  may be operatively coupled to the second antenna  390 . In an embodiment, the second RFFE  360  may include a filter  361  connectable to the second antenna  390  and a duplexer  362  connectable to the second antenna  390 . For example, the filter  361  may pass the second signal. For example, the duplexer  362  may include a first filter  363  passing the fifth signal. For example, the duplexer  362  may include a second filter  364  passing the sixth signal. 
     In an example embodiment, the second RFFE  360  may further include a switch  365 . For example, the switch  365  may be controlled by the processor  300 . For example, the processor  300  may connect the filter  361  and the second antenna  390 , connect the duplexer  362  and the second antenna  390 , connect both the filter  361  and the duplexer  362  to the second antenna  390 , or may disconnect both the filter  361  and the duplexer  362  and the second antenna  390  via the switch  365 . For example, based on the control of the processor  300 , the switch  365  may have one state from among a first state forming (or providing) a first electrical path  366  between the filter  261  and the second antenna  390 , a second state forming a second electrical path  367  between the duplexer  362  and the second antenna  390 , a third state forming both the first electrical path  366  and the second electrical path  367 , and a fourth state not forming both the first electrical path  366  and the second electrical path  367 . 
     In an example embodiment, the second RFFE  360  may further include an LNA  368  configured to amplify the second signal received from the second antenna  390  via the filter  361 . The second signal amplified by the LNA  368  may be provided to the processor  300 . 
     In an example embodiment, the second RFFE  360  may further include an LNA  369  configured to amplify the sixth signal received from the second antenna  390  via the second filter  364  in the duplexer  362 . The sixth signal amplified by the LNA  369  may be provided to the processor  300 . 
     In an example embodiment, the second RFFE  360  may further include a PA  370  configured to amplify signals obtained from the processor  300 . For example, the signals amplified by the PA  370  may be provided to the first filter  363  in the duplexer  362 . In an embodiment, the first filter  363  may be configured to pass the fifth signal from among the amplified signals. 
     In an example embodiment, on a condition that both the first duplexer  320  and the second duplexer  330  are connected to the first antenna  358 , the processor  300  may change a characteristic of the second filter  322  in the first duplexer  320  or change a characteristic of the second filter  332  in the second duplexer  330 . 
     For example, referring to  FIG.  6   , on the condition of transmitting the third signal and receiving the fourth signal, the processor  300  may connect the first antenna  358  to both the first duplexer  320  and the second duplexer  330  by setting the state of the switch  340  to the third state providing both the first electrical path  341  and the second electrical path  342 , respectively. For example, since the pass band of the second filter  322  in the first duplexer  320  connected to the first antenna  358  partially overlaps the pass band of the second filter  332  in the second duplexer  330  connected to the first antenna  358  while the state of the switch  340  is in the third state, the processor  300  may change the characteristic of the second filter  332  that is not used to receive the fourth signal. For example, the processor  300  may change a cut-off frequency (or a center frequency) of the second filter  332  to block or refrain from receiving the fourth signal via the second filter  332 . For example, the processor  300  may change the cut-off frequency (or center frequency) of the second filter  332  to a frequency that blocks the fourth signal within a portion of the downlink frequency range of the second frequency band partially overlapped with the downlink frequency range of the third frequency band, via the second impedance matching circuit  347 . For example, referring to  FIG.  7   , when the first frequency band is B20 of LTE standard of 3GPP (or n20 of NR standard of 3GPP), the second frequency band is B28B of LTE standard of 3GPP (or n28B of NR standard of 3GPP), and the third frequency band is B28A of LTE standard of 3GPP (or n28A of NR standard of 3GPP), while transmitting the third signal and receiving the fourth signal, a pass band of each of the first filter  321  in the first duplexer  320 , the second filter  322  in the first duplexer  320 , the first filter  331  in the second duplexer  330 , and the second filter  332  in the second duplexer  330  may be expressed as a graph  700 . A horizontal axis of the graph  700  is frequency (unit: MHz), a vertical axis of the graph  400  is loss and lines (e.g., line  410 , line  420 , line  430  and line  710 ) in the graph  700  represent a simplified pass band of the first filter  321 , a simplified pass band of the second filter  322 , a simplified pass band of the first filter  331 , and a pass band of the second filter  332 , respectively. For example, the loss may be represented by an S (scattering) parameter. For example, the S parameter may mean a ratio of an input voltage to an output voltage in a frequency distribution. For example, since each of the first duplexer  320  and the second duplexer  330  is a passive element, a maximum or high value of the S parameter in the graph  700  may be 0 dB. For example, on a condition of transmitting the third signal and receiving the fourth signal, the processor  300  may change the second cut-off frequency  442  of the second filter  332  to the second cut-off frequency  701 . Since the pass band of the second filter  332  defined by the first cut-off frequency  441  and the second cut-off frequency  701  does not overlap the downlink frequency range of the second frequency band, the processor  300  may block or refrain from receiving the fourth signal via the second filter  332  by changing the characteristic of the second filter  332 . For example, different from  FIG.  4   , since the guard band  715  is defined or formed between the pass band  720  of the second filter  322  defined by the first cut-off frequency  421  and the second cut-off frequency  422  and the pass band  725  of the second filter  332  defined by the first cut-off frequency  441  and the second cut-off frequency  701 , the processor  300  may block receiving the fourth signal through the second filter  332  and receive the fourth signal through the second filter  322 . 
     For another example, referring to  FIG.  8   , on the condition of transmitting the first signal via the first RFFE  310 , receiving the second signal, and receiving the sixth signal, the processor  300  may connect the first antenna  358  to both the first duplexer  320  and the second duplexer  330 , by setting the state of the switch  340  to the third state providing both a first electrical path  341  and a second electrical path  342 , respectively. For example, the processor  300  may set the state of the switch  340  to the third state, to transmit the first signal and the fifth signal (not illustrated in  FIG.  8   , illustrated in  FIG.  10   ) through carrier aggregation (CA) and to receive the second signal and the sixth signal. For example, the processor  300  may set the state of the switch  340  to the third state to transmit the first signal and the fifth signal (not illustrated in  FIG.  8   , illustrated in  FIG.  10   ) and receive the second signal and the sixth signal via an E-UTRA new radio dual connectivity (EN-DC) of NR standard of 3GPP. For example, since the pass band of the second filter  322  in the first duplexer  320  connected to the first antenna  358  partially overlaps the pass band of the second filter  332  in the second duplexer  330  connected to the first antenna  358  while the state of the switch  340  is in the third state, the processor  300  may change the characteristic of the second filter  322  which is used to receive the second signal from among the second signal and the fourth signal and is not used to receive the sixth signal. For example, the processor  300  may change a cut-off frequency (or a center frequency) of the second filter  322  to block or refrain from receiving the sixth signal via the second filter  322 . For example, the processor  300  may change the cut-off frequency of the second filter  322  to a frequency that blocks the sixth signal within a portion of the downlink frequency range of the third frequency band partially overlapped with the downlink frequency range of the second frequency band via the first impedance matching circuit  346 . For example, referring to  FIG.  9   , when the first frequency band is B20 of LTE standard of 3GPP (or n20 of NR standard of 3GPP), the second frequency band is B28B of LTE standard of 3GPP (or n28B of NR standard of 3GPP), and the third frequency band is n28A of NR standard of 3GPP (or B28A of LTE standard of 3GPP), a pass band of each of the first filter  321  in the first duplexer  320 , the second filter  322  in the first duplexer  320 , the first filter  331  in the second duplexer  330  and the second filter  332  in the second duplexer  330  may be expressed while transmitting the first signal, receiving the second signal, and receiving the sixth signal, as a graph  900 . A horizontal axis of the graph  900  is frequency (unit: MHz), a vertical axis of the graph  900  is loss and lines (e.g., line  410 , line  430 , line  440 , and line  910 ) in the graph  900  represent a simplified pass band of the first filter  321 , a simplified pass band of the second filter  322 , a simplified pass band of the first filter  331 , and a pass band of the second filter  332 , respectively. For example, the loss may be represented by an S (scattering) parameter. For example, the S parameter may mean a ratio of an input voltage to an output voltage in a frequency distribution. For example, since each of the first duplexer  320  and the second duplexer  330  is a passive element, a maximum or high value of the S parameter in the graph  900  may be 0 dB. For example, on the condition of transmitting the first signal, receiving the second signal, and receiving the sixth signal, the processor  300  may change the first cut-off frequency  421  of the second filter  322  to the first cut-off frequency  901 . Since a pass band of the second filter  322  defined as the first cut-off frequency  901  and the second cut-off frequency  422  includes the downlink frequency range of the first frequency band and a pass band of the second filter  322  defined as the first cut-off frequency  901  and the second cut-off frequency  422  does not overlap the downlink frequency range of the third frequency band, the processor  300  may receive the second signal through the second filter  322  via a change in a characteristic of the second filter  322 , and may block or refrain from receiving the sixth signal through the second filter  322  via the change in the characteristic of the second filter  322 . For example, since the guard band  915  is defined or formed between the pass band  920  of the second filter  322  defined by the first cut-off frequency  901  and the second cut-off frequency  422  and the pass band  925  of the second filter  332  defined by the first cut-off frequency  441  and the second cut-off frequency  442 , the processor  300  may block receiving the sixth signal via the second filter  322  and receive the sixth signal via the second filter  332 , different from  FIG.  4   . Each processor herein comprises processing circuitry. 
     Referring back to  FIG.  3   , in an embodiment, the processor  300  may transmit the first signal and the fifth signal via CA or EN-DC and receive the second signal and the sixth signal by using both the first RFFE  310  and the second RFFE  360 . For example, referring to  FIG.  10   , The processor  300  may transmit the first signal, receive the second signal, and receive the sixth signal via the first RFFE  310 , by connecting the first duplexer  320  and the first antenna  358  and connecting the second duplexer  330  and the first antenna  358 , based on setting the state of the switch  340  to the third state providing both the first electrical path  341  and the second electrical path  342 . For example, the cut-off frequency (or center frequency) of the second filter  322  may be changed via the first impedance matching circuit  346  to prevent or reduce the sixth signal from passing through the second filter  322 . For example, the processor  300  may use the first antenna  358  as a transmission/reception path for the first frequency band through the first RFFE  310  and the first antenna  358  as a diversity reception path for the third frequency band. For example, the processor  300  may transmit the fifth signal, receive the second signal, and receive the sixth signal by connecting the filter  361  and the second antenna  390  and connecting the duplexer  362  and the second antenna  390 , based on setting the state of the switch  365  to the third state providing both the first electrical path  366  and the second electrical path  367  while setting the state of the switch  340  to the third state, via the second RFFE  360 . For example, the processor  300  may use the second antenna  390  as a diversity reception path for the first frequency band via the second RFFE  360 , and may use the second antenna  390  as a transmission/reception path for the third frequency band. 
     Referring back to  FIG.  3   , in an example embodiment, on a condition that a duplexer among the first duplexer  320  and the second duplexer  330  is connected to the first antenna  358 , the processor  300  may maintain the characteristic of the second filter  322  in the first duplexer  320  and the second filter  332  in the second duplexer  330 . 
     For example, referring to  FIG.  11   , on the condition of transmitting the fifth signal and receiving the sixth signal, the processor  300  may connect the first antenna  358  to the second duplexer  330  by setting the state of the switch  340  to the second state providing the second electrical path  342 . For example, since the first antenna  358  is disconnected from the first duplexer  320  while the state of the switch  340  is in the second state, the processor  300  may maintain the characteristic of the second filter  332 . For example, while the state of the switch  340  is in the second state, the processor  300  may maintain the characteristic of the second filter  332  by maintaining cut-off frequencies (or center frequencies) of the second filter  332  so that the pass band corresponds to the downlink frequency range of the third frequency band. For example, referring to  FIG.  4   , when the first frequency band is B20 of LTE standard of 3GPP (or n20 of NR standard of 3GPP), the second frequency band is B28B of LTE standard of 3GPP (or n28B of NR standard of 3GPP), and the third frequency band is B28A of LTE standard of 3GPP (or n28A of NR standard of 3GPP), the processor  300  may set the pass band of the first filter  331  so that the pass band of the first filter  331  is expressed as a line  430  via the second impedance matching circuit  347 , and set the pass band of the second filter  332  so that the pass band of the second filter  332  is expressed as a line  440 . 
     For another example, referring to  FIG.  12   , on the condition of transmitting the first signal and receiving the second signal, the processor  300  may connect the first antenna  358  to the first duplexer  320  by setting the state of the switch  340  to the first state providing the first electrical path  341 . For example, while the state of the switch  340  is in the first state, since the first antenna  358  is disconnected from the second duplexer  330 , the processor  300  may maintain the characteristic of the first filter  322 . For example, while the state of the switch  340  is in the first state, the processor  300  may maintain characteristic of the second filter  322  by maintaining cut-off frequencies (or center frequencies) of the second filter  322  so that the pass band of the second filter  322  corresponds to the second frequency band. For example, referring to  FIG.  4   , when the first frequency band is B20 of LTE standard of 3GPP (or n20 of NR standard of 3GPP), the second frequency band is B28B of LTE standard of 3GPP (or n28B of NR standard of 3GPP), and the third frequency band is B28A of LTE standard of 3GPP (or n28A of NR standard of 3GPP), the processor  300  may set the pass band of the first filter  321  so that the pass band of the first filter  321  is expressed as a line  410  via the first impedance matching circuit  346 , and set the pass band of the second filter  322  so that the pass band of the second filter  322  is expressed as a line  420 . 
     As described above, the electronic device  101  may include a filter (e.g., a second filter  322 ) passing all signals on frequency ranges (e.g., the downlink frequency range of the first frequency band and the downlink frequency range of the second frequency band) overlapping each other. The electronic device  101  may include RFFE (e.g., a first RFFE  310 ) having a size smaller than that of the RFFE of the electronic device having a filter for each of the frequency ranges by including the filter. Since the electronic device  101  includes the RFFE having a reduced size, a space for mounting the components of the electronic device  101  may be provided more widely. 
     In an example embodiment, the electronic device  101  may change the characteristic of the filter or another filter to prevent or reduce unintended signals from being received through the filter or another filter distinguished from the filter according to a transmission/reception state of a signal by including the filter. For example, the electronic device  101  may include an impedance matching circuit (e.g., the first impedance matching circuit  346  or the second impedance matching circuit  347 ) to change the characteristic of the filter or the characteristic of another filter. 
     The above-described descriptions describe an example of changing a characteristic of a filter in each of the duplexers used for receiving a signal when two or more duplexers are respectively connected to one antenna, but this is for convenience of description. The above descriptions may be used to change characteristic of filters in each of the duplexers used for transmitting signals when two or more duplexers are respectively connected to one antenna. 
     The electronic device according to an example embodiment can reduce a size of a radio frequency front end (RFFE) including a duplexer by including a duplexer including a filter for passing a signal on a first frequency band and a signal on a second frequency band partially overlapping the first frequency band, and a circuit for adaptively changing a characteristic of the filter. 
     As described above, according to an example embodiment, an electronic device (e.g., electronic device  101 ) may comprise an antenna (e.g., first antenna  358 ), a radio frequency front end (RFFE) (e.g., first RFFE  310 ) comprising a first duplexer (e.g., first duplexer  320 ) comprising a first filter (e.g., first filter  321 ) passing a first signal in uplink frequency range of a first frequency band and a second filter (e.g., second filter  322 ) passing a second signal in downlink frequency range of the first frequency band and a fourth signal in downlink frequency range of a second frequency band partially overlapping the downlink frequency range of the first frequency band and a second duplexer (e.g., second duplexer  330 ) comprising a first filter (e.g., first filter  331 ) passing a third signal in uplink frequency range of the second frequency band and a fifth signal in uplink frequency range of a third frequency band and a second filter (e.g., second filter  332 ) passing a sixth signal in downlink frequency range of the third frequency band that is separate from the downlink frequency range of the first frequency band and partially overlaps the downlink frequency range of the second frequency band, and at least one processor (e.g., processor  300 ), operatively coupled with the RFFE; wherein the at least one processor may be configured to, while both the first duplexer and the second duplexer are electrically connected with the antenna, change a cut-off frequency of the second filter in the first duplexer to a first frequency cutting off the sixth signal in portion of the downlink frequency range of the third frequency band partially overlapping the downlink frequency range of the second frequency band or change a cut-off frequency of the second filter in the second duplexer to a second frequency cutting off the fourth signal in portion of the downlink frequency range of the second frequency band partially overlapping the downlink frequency range of the third frequency band. Any embodiment herein may be used with, or without, any other embodiment herein. 
     In an example embodiment, the at least one processor may be configured to, while transmitting the third signal and receiving the fourth signal via the antenna electrically connected with both the first duplexer and the second duplexer, change the cut-off frequency of the second filter in the second duplexer to the second frequency; and while transmitting the first signal and receiving the second signal and the sixth signal via the antenna electrically connected with both the first duplexer and the second duplexer, change the cut-off frequency of the second filter in the first duplexer to the first frequency. 
     In an example embodiment, the at least one processor is further configured to, while the first duplexer from among the first duplexer and the second duplexer is electrically connected with the antenna, maintain the cut-off frequency of the second filter in the first duplexer as a third frequency passing both the second signal in the downlink frequency range of the first frequency band and the fourth signal in the downlink frequency range of the second frequency band; and while the second duplexer from among the first duplexer and the second duplexer is electrically connected with the antenna, maintain the cut-off frequency of the second filter in the second duplexer as a fourth frequency passing the sixth signal in the downlink frequency range of the third frequency band. In an embodiment, the at least one processor may be configured to, while transmitting the first signal and receiving the second signal via the antenna electrically connected with the first duplexer from among the first duplexer and the second duplexer, maintain the cut-off frequency of the second filter in the first duplexer as the third frequency; and while transmitting the fifth signal and receiving the sixth signal via the antenna electrically connected with the second duplexer from among the first duplexer and the second duplexer, maintain the cut-off frequency of the second filter in the second duplexer as the fourth frequency. 
     In an example embodiment, the RFFE further may comprise a switch (e.g., switch  340 ), wherein the first duplexer may be connectable with the antenna via the switch, wherein the second duplexer may be connectable with the antenna via the switch, and wherein the at least one processor may be configured to change, while controlling the switch to electrically connect both the first duplexer and the second duplexer with the antenna, the cut-off frequency of the second filter in the first duplexer to the first frequency or the cut-off frequency of the second filter in the second duplexer to the second frequency. In an embodiment, the at least one processor may be further configured to, while controlling the switch to electrically connect the first duplexer from among the first duplexer and the second duplexer with the antenna, maintain the cut-off frequency of the second filter in the first duplexer as a third frequency passing both the second signal in the downlink frequency range of the first frequency band and the fourth signal in the downlink frequency range of the second frequency band; and while controlling the switch to electrically connect the second duplexer from among the first duplexer and the second duplexer with the antenna, maintain the cut-off frequency of the second filter in the second duplexer as a fourth frequency passing the sixth signal in the downlink frequency range of the third frequency band. 
     In an example embodiment, the RFFE may further comprise a first impedance matching circuitry (e.g., first impedance matching circuit  346  illustrated in  FIG.  3   ), electrically connected with the first duplexer, electrically connected with the switch; and a second impedance matching circuitry (e.g., second impedance matching circuit  347  illustrated in  FIG.  3   ), electrically connected with the second duplexer, electrically connected with the switch, and wherein the at least one processor may be configured to, while controlling the switch to electrically connect both the first duplexer and the second duplexer with the antenna, change the cut-off frequency of the second filter in the first duplexer to the first frequency by using the first impedance matching circuitry or change the cut-off frequency of the second filter in the second duplexer to the second frequency by using the second impedance matching circuitry. 
     In an example embodiment, the RFFE may further comprise a first impedance matching circuitry (e.g., first impedance matching circuit  346  illustrated in  FIG.  5   ) electrically connected with the second filter in the first duplexer; and a second impedance matching circuitry (e.g., second impedance matching circuit  347  illustrated in  FIG.  5   ) electrically connected with the second filter in the second duplexer, and wherein the at least one processor may be configured to, while controlling the switch to electrically connect both the first duplexer and the second duplexer with the antenna, change the cut-off frequency of the second filter in the first duplexer to the first frequency by using the first impedance matching circuitry or change the cut-off frequency of the second filter in the second duplexer to the second frequency by using the second impedance matching circuitry. 
     In an example embodiment, the antenna may be a first antenna; wherein the electronic device may further comprise a second antenna (e.g., second antenna  390 ), and another RFFE (e.g., second RFFE  360 ), operatively coupled with the at least one processor, comprising a duplexer (e.g., duplexer  362 ) comprising a first filter passing the fifth signal and a second filter passing the sixth signal and a filter (e.g., filter  361 ) passing the second signal, and; wherein the at least one processor may be further configured to change the cut-off frequency of the second filter in the first duplexer, while transmitting the first signal and receiving the second signal and the sixth signal via the first antenna electrically connected with both the first duplexer and the second duplexer, to the second frequency; and transmit the fifth signal and receive the second signal and the sixth signal via the second antenna electrically connected with both the duplexer and the filter in the other RFFE, while transmitting the first signal and receiving the second signal and the sixth signal via the first antenna electrically connected with both the first duplexer and the second duplexer. 
     In an example embodiment, the uplink frequency range of the first frequency band, the uplink frequency range of the second frequency band, and the uplink frequency range of the third frequency band may be separated from each other. 
     In an example embodiment, an electronic device (e.g., electronic device  101 ) may comprise an antenna (e.g., first antenna  358 ), a radio frequency front end (RFFE)(e.g., first RFFE  310 ) comprising a switch (e.g., switch  340 ), a first duplexer (e.g., first duplexer  320 ) comprising a first filter (e.g., first filter  321 ) passing a first signal in uplink frequency range of a first frequency band and a second filter (e.g., second filter  322 ) passing a second signal in downlink frequency range of the first frequency band and a fourth signal in downlink frequency range of a second frequency band partially overlapping the downlink frequency range of the first frequency band and being connectable with the antenna via the switch, a second duplexer (e.g., second duplexer  330 ) comprising a first filter (e.g., first filter  331 ) passing a third signal in uplink frequency range of the second frequency band and a fifth signal in uplink frequency range of a third frequency band and a second filter (e.g., second filter  332 ) passing a sixth signal in downlink frequency range of the third frequency band that is separate from the downlink frequency range of the first frequency band and partially overlaps the downlink frequency range of the second frequency band and being connectable with the antenna via the switch, a first impedance matching circuit (e.g., first impedance matching circuit  346 ), electrically connected with a first electrical path between the switch and the first duplexer, and a second impedance matching circuit (e.g., second impedance matching circuit  347 ), electrically connected with a second electrical path between the switch and the second duplexer, and at least one processor (e.g., processor  300 ), operatively coupled with the RFFE, wherein the at least one processor may be configured to, while both the first duplexer and the second duplexer are connected with the antenna via the switch, change a center frequency of the second filter in the first duplexer to a first frequency cutting off the sixth signal in portion of the downlink frequency range of the third frequency band partially overlapping the downlink frequency range of the second frequency band by using the first impedance matching circuitry or change a center frequency of the second filter in the second duplexer to a second frequency cutting off the fourth signal in portion of the downlink frequency range of the second frequency band partially overlapping the downlink frequency range of the third frequency band by using the second impedance matching circuitry. 
     In an example embodiment, the at least one processor may be configured to, while transmitting the first signal and receiving the second signal and the sixth signal via the antenna electrically connected with both the first duplexer and the second duplexer via the switch, change the center frequency of the second filter in the first duplexer to the first frequency by using the first impedance matching circuit from among the first impedance matching circuit and the second impedance matching circuit; and while transmitting the third signal and receiving the fourth signal via the antenna electrically connected with both the first duplexer and the second duplexer via the switch, change the center frequency of the second filter in the second duplexer to the second frequency by using the second impedance matching circuit from among the first impedance matching circuit and the second impedance matching circuit. 
     In an example embodiment, the at least one processor may be configured to, while the first duplexer from among the first duplexer and the second duplexer is electrically connected with the antenna via the switch, maintain the center frequency of the second filter in the first duplexer as a third frequency passing both the second signal in the downlink frequency range of the first frequency band and the fourth signal in the downlink frequency range of the second frequency band by using the first impedance matching circuit; and while the second duplexer from among the first duplexer and the second duplexer is electrically connected with the antenna via the switch, maintain the center frequency of the second filter in the second duplexer as a fourth frequency passing the sixth signal in the downlink frequency range of the third frequency band by using the second impedance matching circuit. In an embodiment, the at least one processor may be configured to, while transmitting the first signal and receiving the second signal via the antenna electrically connected with the first duplexer from among the first duplexer and the second duplexer via the switch, maintain the center frequency of the second filter in the first duplexer as the third frequency by using the first impedance matching circuit; and while transmitting the fifth signal and receiving the sixth signal via the antenna electrically connected with the second duplexer from among the first duplexer and the second duplexer via the switch, maintain the center frequency of the second filter in the second duplexer as the fourth frequency by using the second impedance matching circuit. 
     In an example embodiment, the antenna may be a first antenna; wherein the electronic device may further comprise a second antenna (e.g., second antenna  390 ) and another RFFE (e.g., second RFFE  360 ), operatively coupled with the at least one processor, comprising another switch (e.g., switch  365 ), a duplexer (e.g., duplexer  362 ) comprising a first filter passing the fifth signal and a second filter passing the sixth signal, and a filter (e.g., filter  361 ) passing the second signal, and wherein the at least one processor may be further configured to change the center frequency of the second filter in the first duplexer, while transmitting the first signal and receiving the second signal and the sixth signal via the first antenna electrically connected with both the first duplexer and the second duplexer via the switch, to the first frequency by using the first impedance matching circuit; and transmit the fifth signal and receive the second signal and the sixth signal via the second antenna electrically connected with both the duplexer and the filter in the other RFFE via the another switch, while transmitting the first signal and receiving the second signal and the sixth signal via the first antenna electrically connected with both the first duplexer and the second duplexer via the switch. 
     In an example embodiment, the first impedance matching circuit may comprise at least one variable capacitor; wherein the second impedance matching circuit may comprise at least one variable capacitor; and wherein the at least one processor may be configured to change the center frequency of the second filter in the first duplexer to the first frequency or based on changing a capacitance value of the at least one variable capacitor in the second impedance matching circuit, change the center frequency of the second filter in the second duplexer to the second frequency based on changing a capacitance value of the at least one variable capacitor in the first impedance matching circuit. 
     In an example embodiment, An electronic device (e.g., electronic device  101 ) may comprise an antenna (e.g., first antenna  358 ), a radio frequency front end (RFFE) (e.g., first RFFE  310 ) comprising a switch (e.g., switch  340 ), a first duplexer (e.g., first duplexer  320 ) comprising a first filter (e.g., first filter  321 ) passing a first signal in uplink frequency range of a first frequency band and a second filter (e.g., second filter  322 ) passing a second signal in downlink frequency range of the first frequency band and a fourth signal in downlink frequency range of a second frequency band partially overlapping the downlink frequency range of the first frequency band and being connectable with the antenna via the switch, a second duplexer (e.g., second duplexer  330 ) comprising a first filter (e.g., first filter  331 ) passing a third signal in uplink frequency range of the second frequency band and a fifth signal in uplink frequency range of a third frequency band and a second filter (e.g., second filter  332 ) passing a sixth signal in downlink frequency range of the third frequency band that is separate from the downlink frequency range of the first frequency band and partially overlaps the downlink frequency range of the second frequency band and being connectable with the antenna via the switch, a first impedance matching circuit (e.g., first impedance matching circuit  346 ), electrically connected with a second filter in the first duplexer from among the first filter in the first duplexer and the second filter in the first duplexer, and a second impedance matching circuit (e.g., second impedance matching circuit  347 ), electrically connected with a second filter in the second duplexer from among the first filter in the second duplexer and the second filter in the second duplexer, and at least one processor (e.g., processor  300 ), operatively coupled with the RFFE, wherein the at least one processor may be configured to, while both the first duplexer and the second duplexer are connected with the antenna via the switch, change a characteristic of a filter from among the second filter in the first duplexer and the second filter in the second duplexer by using an impedance matching circuit from among the first impedance matching circuit and the second impedance matching circuit. 
     In an example embodiment, the at least one processor may be configured to while transmitting the first signal and receiving the second signal and the sixth signal via the antenna electrically connected with both the first duplexer and the second duplexer via the switch, change a characteristic of the second filter in the first duplexer by using the first impedance matching circuit from among the first impedance matching circuit and the second impedance matching circuit and while transmitting the third signal and receiving the fourth signal via the antenna electrically connected with both the first duplexer and the second duplexer via the switch, change a characteristic of the second filter in the second duplexer by using the second impedance matching circuit from among the first impedance matching circuit and the second impedance matching circuit. 
     In an example embodiment, the at least one processor may be further configured to, while the first duplexer from among the first duplexer and the second duplexer is electrically connected with the antenna via the switch, maintain the characteristic of the second filter in the first duplexer by using the first impedance matching circuit and while the second duplexer from among the first duplexer and the second duplexer is electrically connected with the antenna via the switch, maintain the characteristic of the second filter in the second duplexer by using the second impedance matching circuit. 
     In an example embodiment, the at least one processor may be configured to while transmitting the first signal and receiving the second signal via the antenna electrically connected with the first duplexer from among the first duplexer and the second duplexer via the switch, maintain the characteristic of the second filter in the first duplexer by using the first impedance matching circuit and while transmitting the fifth signal and receiving the sixth signal via the antenna electrically connected with the second duplexer from among the first duplexer and the second duplexer via the switch, maintain the characteristic of the second filter in the second duplexer by using the second impedance matching circuit. 
     The electronic device according to various embodiments may be one of various types of electronic devices. The electronic devices may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. According to an embodiment, the electronic devices are not limited to those described above. 
     It should be appreciated that various embodiments of the present disclosure and the terms used therein are not intended to limit the technological features set forth herein to particular embodiments and include various changes, equivalents, or replacements for a corresponding embodiment. With regard to the description of the drawings, similar reference numerals may be used to refer to similar or related elements. It is to be understood that a singular form of a noun corresponding to an item may include one or more of the things, unless the relevant context clearly indicates otherwise. As used herein, each of such phrases as “A or B”, “at least one of A and B”, “at least one of A or B”, “A, B, or C”, “at least one of A, B, and C”, and “at least one of A, B, or C” may include any one of, or all possible combinations of the items enumerated together in a corresponding one of the phrases. As used herein, such terms as “1st” and “2nd”, or “first” and “second” may be used to simply distinguish a corresponding component from another, and does not limit the components in other aspect (e.g., importance or order). It is to be understood that if an element (e.g., a first element) is referred to, with or without the term “operatively” or “communicatively”, as “coupled with”, “coupled to”, “connected with”, or “connected to” another element (e.g., a second element), it means that the element may be coupled with the other element directly (e.g., wiredly), wirelessly, or via at least a third element. 
     As used herein, the term “module” may include a unit implemented in hardware, software, or firmware, and may interchangeably be used with other terms, for example, “logic”, “logic block”, “part”, or “circuitry”. A module may be a single integral component, or a minimum unit or part thereof, adapted to perform one or more functions. For example, according to an embodiment, the module may be implemented in a form of an application-specific integrated circuit (ASIC). 
     Various embodiments as set forth herein may be implemented as software (e.g., the program # 40 ) including one or more instructions that are stored in a storage medium (e.g., internal memory # 36  or external memory # 38 ) that is readable by a machine (e.g., the electronic device # 01 ). For example, a processor (e.g., the processor # 20 ) of the machine (e.g., the electronic device # 01 ) may invoke at least one of the one or more instructions stored in the storage medium, and execute it, with or without using one or more other components under the control of the processor. This allows the machine to be operated to perform at least one function according to the at least one instruction invoked. The one or more instructions may include a code generated by a compiler or a code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Wherein, the term “non-transitory” simply means that the storage medium is a tangible device, and does not include a signal (e.g., an electromagnetic wave), but this term does not differentiate between where data is semi-permanently stored in the storage medium and where the data is temporarily stored in the storage medium. 
     According to an embodiment, a method according to various embodiments of the disclosure may be included and provided in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read only memory (CD-ROM)), or be distributed (e.g., downloaded or uploaded) online via an application store (e.g., PlayStore™), or between two user devices (e.g., smart phones) directly. If distributed online, at least part of the computer program product may be temporarily generated or at least temporarily stored in the machine-readable storage medium, such as memory of the manufacturer&#39;s server, a server of the application store, or a relay server. 
     According to various embodiments, each component (e.g., a module or a program) of the above-described components may include a single entity or multiple entities. According to various embodiments, one or more of the above-described components may be omitted, or one or more other components may be added. Alternatively or additionally, a plurality of components (e.g., modules or programs) may be integrated into a single component. In such a case, according to various embodiments, the integrated component may still perform one or more functions of each of the plurality of components in the same or similar manner as they are performed by a corresponding one of the plurality of components before the integration. According to various embodiments, operations performed by the module, the program, or another component may be carried out sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order or omitted, or one or more other operations may be added.