Electronic device comprising antennas for providing multiple-input and multiple-output, and method

Abstract

This electronic device comprises: at least one processor; a memory including one or more storage mediums storing instructions; a wireless communication circuit; a first antenna; a second antenna; a first matching circuit electrically connected to the first antenna; and a second matching circuit electrically connected to the second antenna. The instructions, when executed individually or collectively by the at least one processor, cause the electronic device to: configure each of a first MTPL for the first antenna and a second MTPL for the second antenna; and change an impedance tuning configuration of at least one of the first matching circuit and the second matching circuit.

Description

Electronic device and method including antennas for providing multiple inputs and outputs

[0001] The present disclosure relates to an electronic device including antennas for providing multiple-input and multiple-output (MIMO) capabilities.

[0002] Electronic devices can perform multiple-input and multiple-output (MIMO) operations using multiple antennas. For example, the electronic device can transmit signals to a base station via multiple antennas. MIMO can improve data transmission rates. When the electronic device transmits signals via multiple antennas, the electronic device can limit the maximum transmission power for the multiple antennas.

[0003] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art in connection with the present disclosure.

[0004] An electronic device is provided. The electronic device may include at least one processor comprising a processing circuit. The electronic device may include a memory comprising one or more storage media storing instructions. The electronic device may include wireless communication circuitry. The electronic device may include a first antenna. The electronic device may include a second antenna. The electronic device may include a first matching circuit electrically connected to the first antenna. The electronic device may include a second matching circuit electrically connected to the second antenna. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to obtain information regarding a maximum transmission power for an uplink transmission. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to identify a first maximum power reduction (MPR) for the first antenna and a second MPR for the second antenna, the first MPR being independent of the first MPR. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to set a first maximum transmitter power limit (MTPL) for the first antenna based on the information about the maximum transmit power and the first MPR. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to set a second MTPL for the second antenna based on the information about the maximum transmit power and the second MPR.The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to transmit a first signal through the first antenna and to transmit a second signal through the second antenna by changing an impedance tuning setting of at least one of the first matching circuit or the second matching circuit based on a difference between the first MTPL and the second MTPL exceeding a threshold value.

[0005] A method of an electronic device is provided. The method may include, for example, obtaining information about a maximum transmit power for an uplink transmission. The method may include identifying a first maximum power reduction (MPR) for a first antenna and a second MPR for a second antenna, the first MPR being independent of the first MPR. The method may include setting a first maximum transmitter power limit (MTPL) for the first antenna based on the information about the maximum transmit power and the first MPR. The method may include setting a second MTPL for the second antenna based on the information about the maximum transmit power and the second MPR. The method may include an operation of transmitting a first signal through the first antenna and transmitting a second signal through the second antenna by changing an impedance tuning setting of a matching circuit of an antenna having a lower MTPL among the first MTPL and the second MTPL based on a difference between the first MTPL and the second MTPL exceeding a threshold value.

[0006] FIG. 1 is a block diagram of an electronic device within a network environment according to one embodiment.

[0007] Figure 2 is a block diagram of an exemplary electronic device.

[0008] Figure 3 schematically illustrates an electronic device performing uplink MIMO.

[0009] Figures 4a, 4b, and 4c illustrate usage states of an exemplary electronic device.

[0010] Figure 4d illustrates an exemplary electronic device.

[0011] Figure 5 is a block diagram of a memory of an exemplary electronic device.

[0012] FIG. 6 is a flow chart illustrating an operation of an exemplary electronic device to set an MTPL for each of a plurality of antennas.

[0013] Figure 7 is a simplified block diagram of an exemplary electronic device.

[0014] FIG. 8 is a flowchart illustrating an operation of an exemplary electronic device to change an impedance tuning setting based on a difference in MTPLs for each of a plurality of antennas.

[0015] FIG. 9 is a flowchart illustrating an operation of an exemplary electronic device to set an MTPL for each of a plurality of antennas in consideration of a SAR event.

[0016] FIG. 10 illustrates an exemplary electronic device including a housing having a foldable structure.

[0017] FIG. 1 is a block diagram of an electronic device within a network environment, according to one embodiment.

[0018] Referring to FIG. 1, in a network environment (100), an electronic device (101) may communicate with an electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with an electronic device (104) or a server (108) via a second network (199) (e.g., a long-range wireless communication network). In one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0019] The processor (120) may, for example, execute 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) connected to the processor (120) and perform various data processing or operations. According to one embodiment, as at least a part of the data processing or operations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or an auxiliary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together 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 configured to use less power than the main processor (121) or to be specialized for a given function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0020] The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf 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 (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, in the electronic device (101) itself where artificial intelligence is performed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of 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), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0021] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

[0022] The program (140) may be stored as software in the memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0023] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0024] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0025] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. In one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0026] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0027] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0028] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) to an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0029] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0030] The haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. According to one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0031] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0032] The power management module (188) can manage the power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0033] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0034] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one 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 module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a 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., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0035] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can 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 one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0036] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas by, for example, the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device through the selected at least one antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0037] In one embodiment, the antenna module (197) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high frequency band.

[0038] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0039] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In another embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0040] Figure 2 is a block diagram of an exemplary electronic device.

[0041] Referring to FIG. 2, an exemplary electronic device (101) may include at least one processor (e.g., processor (120) of FIG. 1), a wireless communication circuit (e.g., wireless communication module (192) of FIG. 1), a first antenna (210), a second antenna (220), a first matching circuit (230), a second matching circuit (240), and / or a memory (130).

[0042] For example, at least one processor (120) may include a processing circuit. At least one processor (120) may include an application processor (AP, e.g., a central processing unit (CPU)), a communication processor (CP, e.g., a modem), a graphics processing unit (e.g., a GPU), a neural processing unit (NPU) (e.g., an artificial intelligence (AI) chip), a wireless-fidelity (Wi-Fi) chip, and a Bluetooth TM It may include a chip, a global positioning system (GPS) chip, a near field communication (NFC) chip, connectivity chips, a sensor controller, a touch controller, a finger-print sensor controller, a display drive integrated circuit (DDI), an audio CODEC chip, a universal serial bus (USB) controller, a camera controller, an image processing IC, a microprocessor unit (MPU), a system on chip (SoC), an IC, or a similar circuit.

[0043] For example, the wireless communication circuit (192) may include an RF (radio frequency) transceiver (260) and an RFFE (radio frequency front end) (RFFE) (270).

[0044] For example, at least one processor (120) may generate a baseband signal. At least one processor (120) may control an RF transceiver (260) to process the generated baseband signal. At least one processor (120) may control the RF transceiver (260) to transmit a transmission signal through the first antenna (210) and the second antenna (220). At least one processor (120) may control the RF transceiver (260) to transmit the transmission signal in a frequency band that can communicate with an external electronic device.

[0045] For example, the RF transceiver (260) may be implemented as a single chip (e.g., an RFIC chip) or as part of a single package. The RF transceiver (260) may include a digital to analog converter (DAC) for converting a digital signal to an analog signal. The RF transceiver (260) may include a mixer and an oscillator (e.g., a local oscillator (LO)) for up-conversion. The RF transceiver (260) may convert a baseband signal generated by at least one processor (120) into an RF signal. The RF transceiver (260) may include an analog to digital converter (ADC) for converting an analog signal to a digital signal. The RF transceiver (260) may include a mixer and an oscillator for down-conversion. The RF transceiver (260) can convert RF signals received from the first antenna (210) and the second antenna (220) into baseband signals so that they can be processed by at least one processor (120).

[0046] For example, the RFFE (270) may include a first RFFE (271) for the first antenna (210) and a second RFFE (272) for the second antenna (220). For example, the first RFFE (271) and the second RFFE (272) may include a plurality of components that are electrically connected between the RF transceiver (260) and the antennas (e.g., the first antenna (210) and the second antenna (220)). For example, the first RFFE (271) and the second RFFE (272) may include components such as, but not limited to, a coupler, a power amplifier (PA), a low noise amplifier (LNA), a switch circuit, and / or a duplexer.

[0047] For example, the first antenna (210) and the second antenna (220) may be used to transmit and / or receive signals on a designated frequency band. For example, the electronic device (101) may perform uplink multiple-input and multiple-output (MIMO) using the first antenna (210) and the second antenna (220).

[0048] For example, the electronic device (101) can perform uplink MIMO through at least two or more antennas. For example, the electronic device (101) can include a first antenna (210) and a second antenna (220) for performing uplink MIMO. For example, the first antenna (210) can be referred to as a primary antenna for uplink MIMO, and the second antenna (220) can be referred to as a secondary antenna for uplink MIMO. However, the present invention is not limited thereto. For example, the electronic device (101) can also include three or more antennas.

[0049] For example, when the electronic device (101) performs uplink MIMO using the first antenna (210) and the second antenna (220), the base station (300), which is a receiver, can determine a modulation scheme according to channel characteristics. For example, the base station (300) (BS, base station) may be referred to as a fixed station, a Node B, an eNode B (eNB), and / or an access point (AP, access point). For example, the base station (300) may transmit a modulation scheme (e.g., a modulation and coding scheme (MCS)) to the electronic device (101). For example, the electronic device (101) may be configured to generate a signal of a physical layer uplink shared channel (PUSCH) based on the modulation scheme determined by the base station (300). For example, when utilizing 5G communication, the electronic device (101) may utilize the N41 band defined by the 3rd generation partnership project (3GPP). For example, the N41 band may include a frequency range between about 2496 MHz and about 2690 MHz. The electronic device (101) may be configured to transmit an uplink signal on the N41 band to the base station (300).

[0050] For example, the electronic device (101) may include a first transmission path (251) for the first antenna (210) and a second transmission path (252) for the second antenna (220). For example, in order to perform uplink MIMO, a transmission path between the wireless communication circuit (192) and the first antenna (210) and a transmission path between the wireless communication circuit (192) and the second antenna (220) may be formed, respectively. For example, a first signal to be transmitted through the first antenna (210) may be provided to the first antenna (210) along the first transmission path (251) and radiated through the first antenna (210). For example, a second signal to be transmitted through the second antenna (220) may be provided to the second antenna (220) along the second transmission path (252) and radiated through the second antenna (220).

[0051] For example, the first matching circuit (230) may be used for impedance tuning of the first antenna (210). For example, the first matching circuit (230) may be electrically connected to a first transmission path (251) for the first antenna (210). For example, at least one processor (120) may control the first matching circuit (230) to adjust the impedance of the first transmission path (251). As the impedance of the first transmission path (251) is adjusted, the gain of the first signal provided along the first transmission path (251) may be adjusted.

[0052] For example, the second matching circuit (240) may be used for impedance tuning of the second antenna (220). For example, the second matching circuit (240) may be electrically connected to a second transmission path (252) for the second antenna (220). For example, at least one processor (120) may control the second matching circuit (240) to adjust the impedance of the second transmission path (252). As the impedance of the second transmission path (252) is adjusted, the gain of the second signal provided along the second transmission path (252) may be adjusted.

[0053] For example, when the electronic device (101) transmits an uplink signal, the base station (300) can set the maximum transmission power to the electronic device (101). By setting the maximum transmission power of the electronic device (101), the base station (300) can efficiently distribute resources and reduce interference between signals. For example, the electronic device (101) can obtain information about the maximum transmission power for transmitting the uplink signal from the base station (300). For example, the electronic device (101) can be configured to set the transmission power based on the maximum transmission power set by the base station (300). For example, the transmission power of the first signal transmitted through the first antenna (210) and the transmission power of the second signal transmitted through the second antenna (220) can be limited by the maximum transmission power set by the base station (300).

[0054] For example, the electronic device (101) may be configured to set a maximum transmitter power limit (MTPL). For example, the electronic device (101) may be configured to set the MTPL by considering a wave form, a modulation scheme, resource allocation of resource blocks, a carrier aggregation (CA) setting, and / or a specific absorption rate (SAR) event associated with transmitting an uplink signal. For example, when the electronic device (101) transmits an uplink signal, the electronic device (101) may reduce the output power by setting a maximum power reduction (MPR) value from the maximum transmission power set by the base station (300). For example, uplink MIMO may be performed with a transmission power (e.g., a first value - a second value) that reflects an MPR (e.g., a second value) limited by the electronic device (101) from the maximum transmission power (e.g., a first value) set by the base station (300).

[0055] For example, when the electronic device (101) performs uplink MIMO through the first antenna (210) and the second antenna (220), the transmission power of the electronic device (101) may be referred to as the sum power of the transmission power of the first antenna (210) and the transmission power of the second antenna (220). For example, the sum of the transmission power of the first antenna (210) and the transmission power of the second antenna (220) may be limited to the MTPL reflecting the MPR limited by the electronic device (101) from the maximum transmission power set by the base station (300). For example, when the maximum transmission power set by the base station (300) is about 25 dBm, the transmission power of the first antenna (210) and the transmission power of the second antenna (220) may be limited to about 22 dBm each by the uplink MIMO operation. If the MPR value is set by the electronic device (101), the transmission power of the first antenna (210) and the transmission power of the second antenna (220) may be lower than about 22 dBm.

[0056] For example, if the limited MTPL is applied equally to the first antenna (210) and the second antenna (220), the transmission power of the first antenna (210) and the transmission power of the second antenna (220) are set to be the same, thereby reducing the transmission power of the uplink signal. For example, if the modulation method of the first signal and the modulation method of the second signal are different, the first MPR for the first antenna (210) and the second MPR for the second antenna (220) may be different. If the electronic device (101) sets the MTPL based on a higher MPR among the first MPR and the second MPR, the combined power is reduced, thereby reducing the transmission power of the uplink signal. When the transmission power of the electronic uplink signal is reduced, the modulation and coding selection (MCS) level and data throughput may be reduced, or the block error rate (BLER) may be increased, thereby degrading the communication performance of the electronic device (101).

[0057] An exemplary electronic device (101) can improve the transmission power of an uplink signal by independently setting the MTPL of the first antenna (210) and the second antenna (220) for performing uplink MIMO. For example, the electronic device (101) can set the MTPL for each of the first transmission path (251) and the second transmission path (252).

[0058] The memory (130) may include one or more storage media for storing instructions. The instructions may be executable by at least one processor (120). When the instructions are individually or collectively executed by at least one processor (120), they may be configured to cause operations of the electronic device (101).

[0059] Figure 3 schematically illustrates an electronic device performing uplink MIMO.

[0060] Referring to FIG. 3, a wireless communication system may include a base station (300). The base station (300) may provide communication services for a designated area (e.g., a cell). An exemplary electronic device (101) may be configured to perform uplink MIMO using a first antenna (210) and a second antenna (220). For example, the electronic device (101) may transmit a first signal through the first antenna (210) and a second signal through the second antenna (220). For example, the electronic device (101) may include transmission paths for each of the first signal and the second signal. As described with reference to FIG. 2, the electronic device (101) may include a first transmission path (251) and a second transmission path (252).

[0061] For example, the electronic device (101) may be configured to identify a first MPR for the first antenna (210) and a second MPR for the second antenna (220), respectively, within the limit of the maximum transmission power set by the base station (300). In uplink MIMO operation, the first antenna (210) and the second antenna (220) transmit an uplink signal to one base station (300), and therefore, the maximum transmission power for the first antenna (210) and the maximum transmission power for the second antenna (220) may be the same. For example, a first MTPL for the first antenna (210) may be set based on the maximum transmission power and the first MPR. For example, a second MTPL for the second antenna (220) may be set based on the maximum transmission power and the second MPR. The first MTPL and the second MTPL may be set independently.

[0062] For example, MPR can be determined based on the modulation scheme and the allocated resource block (RB). For example, MPR according to the predefined waveform, modulation scheme, and RB in a communication standard (e.g., 3GPP NR) can be referenced in [Table 1] below.

[0063]

[0064] Referring to the above [Table 1], MPR can be set based on the waveform, modulation method, and area of ​​the allocated resource block.

[0065] The uplink of a 5G system can utilize orthogonal frequency division multiplexing (OFDM). For example, the MPR can be set differently depending on whether it is DFT-s-OFDM or CP-OFDM. For example, DFT-s-OFDM has relatively lower peak-to-average power ratio (PAPR) and cubic metric (CM) values ​​than CP-OFDM, and thus can have a relatively lower MPR value.

[0066] Referring to [Table 1] above, the MPR can be set according to the modulation order of the modulation method. For example, as the modulation order increases, the MPR value can also increase relatively.

[0067] Referring to [Table 1] above, the MPR value can be set differently for each section of a resource block. A resource block can be divided into three regions. For example, N resource blocks can be divided into three regions (edge ​​RB allocations, outer RB allocations, inner RB allocations). Edge RB allocations can be referred to as resource blocks located at the edge among the allocated resource blocks. Inner RB allocations can be referred to as resource blocks located at the center among the allocated resource blocks. Outer RB allocations can be referred to as resource blocks other than the edge RB allocations and inner RB allocations among the allocated resource blocks.

[0068] For example, referring to the above [Table 1], the MPR value corresponding to CP-OFDM QPSK and inner RB allocations is 1.5 dB. The electronic device (101) can set the MTPL through the MPR of 1.5 dB. For example, when the maximum transmission power set by the base station (300) is about 25 dBm and the MPR value according to the modulation of the uplink signal is 1.5 dB, the MTPL of the electronic device (101) can be set to about 23.5 dBm (e.g., 25 - 1.5). For example, when performing uplink MIMO through the first antenna (210) and the second antenna (220), the total power of about 23.5 dBm may be divided in half, and the first MTPL for the first antenna (210) and the second MTPL for the second antenna (220) may be set to about 20.5 dBm, respectively.

[0069] Figures 4a, 4b, and 4c illustrate usage states of an exemplary electronic device. Figure 4d illustrates an exemplary electronic device.

[0070] For example, the electronic device (101) may be configured to set a power back off based on a SAR event.

[0071] For example, an electronic device (101) can communicate with an external electronic device by emitting electromagnetic waves. The electromagnetic waves radiated from the electronic device (101) can affect a user of the electronic device (101). The specific absorption rate (SAR) can be referred to as a numerical value representing the absorption rate of the electromagnetic waves radiated from the electronic device (101) by the human body. For example, the SAR can be referred to as the power absorbed per 1 gram of human body (KW / g or mW / g).

[0072] For example, a power back-off value designated based on a SAR event may be preset. For example, the electronic device (101) may include a memory (130) including information about an MTPL set based on the designated power back-off value. For example, the memory (130) may store instructions including information about an MTPL to which a power back-off value corresponding to each SAR event is applied. For example, the instructions stored in the memory (130) may be referred to as [Table 2] below. [Table 2] below is a numerical value for the case where the duty for the N41 band is 100%.

[0073]

[0074] Referring to the above [Table 2], the memory (130) may store information regarding the third MTPL for the first antenna (210) and the fourth MTPL for the second antenna (220) according to the SAR event. For example, RCV may be referenced as an event related to a receiver. For example, Hotspot may be an example of an event related to the establishment of a communication channel. For example, Earjack may be an example of an event related to the connection of an external connection terminal. For example, Grip may be referenced as a grip event identified by a grip sensor.

[0075] For example, a SAR event may include at least one of an event related to a receiver, an event related to the establishment of a communication channel, an event related to the connection of an external connection terminal, and / or a grip event identified by a grip sensor. For example, when an SAR event is identified, the electronic device (101) may be configured to limit the transmission power based on information about the MTPL stored in the memory (130).

[0076] Referring to FIG. 4A, an exemplary electronic device (101) may include a receiver (403) and a receiver hole (404). For example, the receiver (403) may be a device for outputting sound (e.g., voice) and may be used to receive an incoming call. The sound output from the receiver (403) may be transmitted to a user through the receiver hole (404). For example, the electronic device (101) may include a duct extending from the receiver (403) to the receiver hole (404). For example, an event associated with the receiver may be referred to as an event in which a call is received by the electronic device (101) and sound is output through the receiver (403). For example, the electronic device (101) may be configured to set the MTPL to approximately 15 dB when it identifies the occurrence of an event associated with the receiver.

[0077] For example, the electronic device (101) may be configured to establish a communication channel with an external electronic device. For example, the electronic device (101) may be configured to share a mobile data communication network and / or a WiFi communication network connected through the electronic device (101) with the external electronic device. For example, an event related to establishing a communication channel may be referred to as an event of sharing the communication network with the external electronic device. For example, the electronic device (101) may be configured to restrictively allow access to the communication network by the external electronic device. For example, when the electronic device (101) identifies the establishment of the communication channel with the external electronic device, the electronic device (101) may set the MTPL to approximately 20 dB.

[0078] Referring to FIG. 4B, an exemplary electronic device (101) may include a connection portion (402) for connection to an external connection terminal (401). For example, the connection portion (402) may include a terminal for inserting a jack of an earphone (405), but is not limited thereto. For example, an event related to connection of an external connection terminal may be referred to as an event related to connection of the external connection terminal (401) to the connection portion (402). For example, when a user connects an earphone (405) to the electronic device (101), the user may connect the jack of the earphone (405) to the connection terminal. When the jack of the earphone (405) is connected to the connection terminal, sound output from the electronic device (101) may be provided to the earphone (405). For example, the electronic device (101) may be configured to identify the MTPL as approximately 20 dB when it identifies a connection to the connection portion (402) of the external connection terminal (401).

[0079] Referring to FIG. 4C, an exemplary electronic device (101) may include a grip sensor (450). For example, the grip sensor (450) may include a metal pad. For example, the grip sensor (450) may be configured to measure a capacitance value of the metal pad. For example, when a user's body and the housing (406) of the electronic device (101) come into contact, a change in the capacitance value of the metal pad may be caused by the contact. For example, the grip sensor (450) may be configured to identify whether the user grips the electronic device (101) based on whether a change in the capacitance value caused by the metal pad exceeds a preset reference value. For example, the reference value may be set to a capacitance value of the metal pad that may be caused by the user's body. The configuration and operation of the grip sensor (450) described above are exemplary and are not limited thereto. For example, a grip event identified by a grip sensor may be referred to as an event related to a user's grip via the grip sensor (450). For example, when a user grips an electronic device (101), the electronic device (101) may be configured to identify the grip via the grip sensor (450). For example, when the electronic device (101) identifies the grip, the electronic device (101) may be configured to identify the MTPL as approximately 20 dB.

[0080] For example, at least one processor (120) may be configured to identify a third MTPL for the first antenna (210) and a fourth MTPL for the second antenna (220), respectively, based on a SAR event. For example, at least one processor (120) may identify the third MTPL for the first antenna (210) based on a first SAR event associated with the first antenna (210), and may identify the fourth MTPL for the second antenna (220) based on a second SAR event associated with the second antenna (220). For example, the first SAR event may be referred to as a SAR event that occurred with respect to the first antenna (210), and the second SAR event may be referred to as a SAR event that occurred with respect to the second antenna (220).

[0081] For example, the position of the first antenna (210) and the position of the second antenna (220) may be different. Since the position of the first antenna (210) is different from the position of the second antenna (220), the first SAR event and the second SAR event may occur independently.

[0082] Referring to FIG. 4D, the exemplary electronic device (101) may include a housing (406) forming an exterior of the electronic device (101). For example, the housing (406) may include a support member (420) (or bracket) and a side frame (410). For example, the support member (420) may support components of the electronic device (101) (e.g., a battery, a printed circuit board, a camera). For example, the side frame (410) may be arranged to surround at least a portion of an edge of the support member (420). For example, the side frame (410) may be coupled with a display forming at least a portion of a front surface of the electronic device (101) and a cover plate forming a back surface of the electronic device (101), thereby forming a side surface of the electronic device (101).

[0083] For example, the side frame (410) may include a plurality of edges. For example, the side frame (410) may include a first edge (411), a second edge (412) extending perpendicularly to the first edge (411), a third edge (413) opposite the first edge (411), and a fourth edge (414) opposite the second edge (412). For example, the second edge (412) may extend from one end of the first edge (411) to one end of the third edge (413). For example, the fourth edge (414) may extend from the other end of the first edge (411) to the other end of the third edge (413). For example, the first edge (411) may be an edge of the housing (406) in the +y direction. For example, the second edge (412) may be an edge in the +x direction of the housing (406). For example, the third edge (413) may be an edge in the -y direction of the housing (406). For example, the fourth edge (414) may be an edge in the -x direction of the housing (406). However, the present invention is not limited thereto.

[0084] For example, the housing (406) may include a plurality of conductive portions (430) and a plurality of non-conductive portions (440). For example, the plurality of non-conductive portions (440) may be disposed between the plurality of conductive portions (430) to electrically isolate the plurality of conductive portions (430). For example, the plurality of conductive portions (430) and the plurality of non-conductive portions (440) may form at least a portion of the side frame (410).

[0085] For example, at least some of the plurality of conductive portions (430) may be used as antenna radiators. For example, the wireless communication circuit (192) may be configured to communicate with an external electronic device by powering at least some of the plurality of conductive portions (430). For example, the conductive portion that receives the power supply signal from the wireless communication circuit (192) may be configured to radiate a signal to the external electronic device.

[0086] For example, the conductive portion may include a first conductive portion (431) and a second conductive portion (432) used as an antenna radiator. However, the present invention is not limited thereto. For example, in addition to the first conductive portion (431) and the second conductive portion (432) described above, other conductive portions may also be used as an antenna radiator.

[0087] For example, the first conductive portion (431) may be formed between the first non-conductive portion (441) within the third edge (413) and the second non-conductive portion (442) within the third edge (413). For example, the second conductive portion (432) may be formed between the third non-conductive portion (443) within the first edge (411) and the fourth non-conductive portion (444) within the first edge (411). For example, the first antenna (210) described in [Table 2] may be referred to as an antenna that uses the first conductive portion (431) as an antenna radiator. For example, the second antenna (220) described in [Table 2] may be referred to as an antenna that uses the second conductive portion (432) as an antenna radiator.

[0088] Referring to FIG. 4D, the first antenna (210) and the second antenna (220) may be positioned at different locations of the housing (406). For example, the location of the first antenna (210) may be substantially opposite to the location of the second antenna (220). For example, the first antenna (210) may be positioned at the bottom (e.g., in the -y direction) of the electronic device (101), and the second antenna (220) may be positioned at the top (e.g., in the +y direction) of the electronic device (101). Since the locations of the first antenna (210) and the second antenna (220) are different from each other, a SAR event may occur for each of the first antenna (210) and the second antenna (220).

[0089] Referring back to FIG. 4A, when an event related to a receiver occurs, a first SAR event and a second SAR event may occur independently depending on the location of the first antenna (210) and the location of the second antenna (220). For example, when the receiver hole (404) is located at the top of the electronic device (101), a user receiving an incoming call using the electronic device (101) may place the receiver hole (404) close to a part of the body (e.g., an ear). Since the receiver hole (404) located at the top of the electronic device (101) and the user's ear are located close to each other, the second antenna (220) may come into contact with the ear, and thus a second SAR event may occur. For example, since the first antenna (210) does not come into contact with the user's body, the first SAR event may not occur. At least one processor (120) may set the fourth MTPL according to [Table 2] based on the second SAR event. For example, the fourth MTPL may be set to approximately 15 dB. For example, since the first SAR event did not occur, the third MTPL may not be set separately.

[0090] The MTPL values ​​established based on the aforementioned SAR events are exemplary and not limiting. SAR events may vary beyond the aforementioned SAR events.

[0091] Figure 5 is a block diagram of a memory of an exemplary electronic device.

[0092] Referring to FIG. 5, an exemplary electronic device (101) may include a memory (130). For example, the memory (130) may store information (510) related to MPR and MTPL information (520) related to SAR events.

[0093] For example, the information (510) related to MPR may include MPR values ​​set by a modulation method and an allocated resource block (RB). For example, the information (510) related to MPR may be referenced by the MPR values ​​described in [Table 1]. For example, the memory (130) may store instructions including the information (510) related to MPR. For example, at least one processor (120), when executing instructions including the information (510) related to MPR stored in the memory (130), may identify MPR values ​​for each of the first antenna (210) and the second antenna (220). For example, at least one processor (120) may be configured to, when executing the instructions stored in the memory (130), identify a first MPR based on a first modulation scheme and a first resource block associated with the first antenna (210), and set a first MTPL based on the identified first MPR.

[0094] For example, if the waveform of the first signal is DFT-s-OFDM, the modulation method of the first signal is 64QAM, and the section of the resource block allocated to the first signal is edge RB allocations, at least one processor (120) can identify the first MPR as about 3.5 dB. For example, if the maximum transmission power set by the base station (300) is about 25 dBm, the first MTPL can be set to about 21.5 dBm (e.g., 25 - 3.5).

[0095] For example, if the waveform of the second signal is DFT-s-OFDM, the modulation scheme of the first signal is QPSK, and the interval of the resource block allocated to the first signal is outer RB allocations, at least one processor (120) can identify the first MPR as about 1 dB. For example, if the maximum transmission power set by the base station (300) is about 25 dBm, the first MTPL can be set to about 24 dBm (e.g., 25 - 1). Referring to the above-described example, the first MTPL and the second MTPL can be set independently.

[0096] For example, the MTPL information (520) related to the SAR event may be information about an MTPL set based on a power back-off value corresponding to the SAR event. For example, the memory (130) may store instructions including the MTPL information (520) related to the SAR event. For example, at least one processor (120) may be configured to, when executing instructions including the MTPL information (520) related to the SAR event stored in the memory (130), identify a third MTPL for the first antenna (210) based on a first SAR event related to the first antenna (210), and identify a fourth MTPL for the second antenna (220) based on a second SAR event related to the second antenna (220). For example, the third MTPL may be different from the first MTPL. For example, the fourth MTPL may be different from the second MTPL. For example, at least one processor (120) may compare the first MTPL and the third MTPL and set the MTPL for the first antenna (210) to a lower MTPL value. For example, at least one processor (120) may compare the second MTPL and the fourth MTPL and set the MTPL for the second antenna (220) to a lower MTPL value. The above operation will be described later with reference to FIG. 9.

[0097] FIG. 6 is a flow chart illustrating an operation of an exemplary electronic device to set an MTPL for each of a plurality of antennas.

[0098] According to one embodiment, instructions stored in a memory (e.g., memory (130) of FIG. 2) may cause the operations described in FIG. 6 when individually or collectively executed by at least one processor (120).

[0099] The exemplary electronic device (101) can set a first MTPL for the first antenna (210) and a second MTPL for the second antenna (220), respectively. For example, the first MTPL and the second MTPL can be set independently. For example, when the limited MTPL is equally applied to the first antenna (210) and the second antenna (220), the transmission power limitation of the first antenna (210) and the transmission power limitation of the second antenna (220) can be set identically. For example, during uplink MIMO, the first signal transmitted through the first antenna (210) and the second signal transmitted through the second antenna (220) can be different. For example, first information included in the first signal and second information included in the second signal can be different. The modulation of the first signal to include the first information in the first signal and the modulation of the second signal to include the second information in the second signal may be different. Even if the modulation of the first signal and the modulation of the second signal are different, if the first MTPL and the second MTPL are set to be the same, problems due to unnecessary power reduction may occur. The exemplary electronic device (101) can increase the combined power of the transmission power of the first antenna (210) and the transmission power of the second antenna (220) by setting the first MTPL and the second MTPL, respectively.

[0100] Referring to FIG. 6, in operation 601, at least one processor (120) may obtain information on maximum transmission power for uplink signal transmission.

[0101] For example, when the electronic device (101) performs uplink MIMO, the base station (300) can provide information about uplink signal transmission to the electronic device (101). For example, in the uplink MIMO operation, the maximum transmission power can be predetermined according to the cell. For example, at least one processor (120) can obtain information about the maximum transmission power provided from the base station (300).

[0102] In operation 603, at least one processor (120) may identify a first MPR for the first antenna (210) and a second MPR for the second antenna (220), respectively.

[0103] For example, the first MPR for the first antenna (210) may be determined based on the waveform, modulation scheme, and resource block of the first signal to be transmitted through the first antenna (210). For example, at least one processor (120) may predefine the MPR according to the waveform, modulation scheme, and resource block as described in [Table 1] above. For example, the memory (130) may include instructions including information regarding the MPR according to the waveform, modulation scheme, and resource block of the signal. For example, at least one processor (120) may identify the first MPR when executing the instructions.

[0104] For example, the second MPR for the second antenna (220) may be determined based on the waveform, modulation scheme, and resource block of the second signal to be transmitted through the second antenna (220). For example, at least one processor (120) may identify the second MPR when executing the instructions.

[0105] In operation 605, at least one processor (120) may set a first MTPL for the first antenna (210) based on information about the maximum transmit power and the first MPR.

[0106] For example, at least one processor (120) may set a first MTPL based on a first MPR for the first antenna (210) within a limit of a maximum transmission power included in information about a maximum transmission power set by the base station (300). For example, at least one processor (120) may be configured to set a value obtained by subtracting the identified first MPR from the maximum transmission power as the first MTPL. For example, at least one processor (120) may be configured to transmit a first signal through the first antenna (210) based on the first MTPL.

[0107] For example, when the maximum transmission power set by the base station (300) is about 25 dBm and the first MPR value according to the modulation of the first signal is 0.5 dB, the first MTPL for the first antenna (210) may be set to about 24.5 dBm (e.g., 25 - 0.5). For example, at least one processor (120) may be configured to transmit the first signal through the first antenna (210) based on the first MTPL set to about 24.5 dBm.

[0108] In operation 607, at least one processor (120) may set a second MTPL for the second antenna (220) based on information about the maximum transmit power and the second MPR.

[0109] For example, at least one processor (120) may set a second MTPL based on a second MPR for the second antenna (220) within a limit of a maximum transmit power included in information about a maximum transmit power set by the base station (300). For example, at least one processor (120) may be configured to set the second MTPL as a value obtained by subtracting the identified second MPR from the maximum transmit power. For example, at least one processor (120) may be configured to transmit a second signal through the second antenna (220) based on a second MTPL that is independent of the first MTPL.

[0110] For example, if the maximum transmission power set by the base station (300) is about 25 dBm and the second MPR value according to the modulation of the second signal is 2.5 dB, the second MTPL for the second antenna (220) may be set to about 22.5 dBm (e.g., 25 - 2.5). For example, at least one processor (120) may be configured to transmit the second signal through the second antenna (220) based on the second MTPL set to about 22.5 dBm.

[0111] For example, the second MTPL may be independent of the first MTPL. For example, the second MTPL may be the same as or different from the first MTPL. For example, if the waveform, modulation scheme, and resource blocks of the first signal are the same as the waveform, modulation scheme, and resource blocks of the second signal, the first MTPL and the second MTPL may be the same. For example, if the waveform, modulation scheme, and resource blocks of the first signal are different from the waveform, modulation scheme, and resource blocks of the second signal, the first MTPL and the second MTPL may be different.

[0112] As described above, the electronic device (101) can increase the transmission power of the electronic device (101) within the maximum allowed transmission power range by independently setting the first MTPL and the second MTPL, respectively.

[0113] For example, the electronic device (101) may perform antenna switching (e.g., 2T4R (two transmit four receive)) using SRS to improve the performance of downlink communication. For example, the electronic device (101) may transmit SRSs to the base station (300) through multiple antennas. As an example, the electronic device (101) may transmit a first SRS signal through a first antenna (210). For the first SRS signal, the electronic device (101) may determine the transmission power of the first SRS signal based on a first MPTL. The electronic device (101) may transmit a second SRS signal through a second antenna (220). For the second SRS signal, the electronic device (101) may determine the transmission power of the second SRS signal based on a second MPTL.

[0114] An exemplary electronic device (101) can increase the transmission power of the electronic device (101) by independently setting the first MTPL and the second MTPL. As the transmission power of the electronic device (101) increases, the data throughput can increase and the block error rate can decrease, thereby improving the communication performance of the electronic device (101).

[0115] Figure 7 is a simplified block diagram of an exemplary electronic device.

[0116] Referring to FIG. 7, the first matching circuit (230) and the second matching circuit (240) may include at least one passive element and a switch circuit. For example, the at least one passive element may include a plurality of capacitors, each having a designated capacitance value, and / or a plurality of inductors, each having a designated inductance value.

[0117] For example, at least one processor (120) can adjust the impedance of the first transmission path (251) by controlling the first matching circuit (230). For example, the first matching circuit (230) can include at least one first passive element (620) and a first switch circuit (610). For example, the at least one first passive element (620) can include four capacitors having different capacitance values. For example, the first switch circuit (610) can be a single pole four throw (SP4T) switch that can electrically connect any one of the four capacitors to the first transmission path (251). However, the present invention is not limited thereto. For example, the first switch circuit (610) can also include a single pole single throw (SPST) switch, a single pole double throw (SPDT), or a single pole triple throw (SP3T). For example, the first matching circuit (230) may include one or more switch circuits. For example, at least one first passive element (620) may include a variable capacitor having a changeable capacitance value and / or a variable inductor having a changeable inductance value.

[0118] For example, the first matching circuit (230) may be operatively connected to at least one processor (120). The at least one processor (120) may be configured to control the first switch circuit (610) to electrically connect at least one first passive element (620) and the first transmission path (251). Depending on a parameter value (e.g., capacitance or inductance) of the at least one first passive element (620) electrically connected to the first transmission path (251), an S-parameter (e.g., reflection coefficient and / or transmission coefficient) of a first signal transmitted along the first transmission path (251) may be changed. As the S-parameter is changed, the gain of the first antenna (210) may be changed.

[0119] The descriptions of the first matching circuit (230) described above may be substantially identically applied to the second matching circuit (240). For example, the second matching circuit (240) may include at least one second passive element (640) and a second switch circuit (630). For example, the at least one second passive element (640) may include four capacitors having different capacitance values. For example, the second switch circuit (630) may be an SP4T switch that may electrically connect any one of the four capacitors to the second transmission path (252). However, the present invention is not limited thereto. For example, the second matching circuit (240) may be operatively connected to at least one processor (120). The at least one processor (120) may be configured to control the second switch circuit (630) to electrically connect the at least one second passive element (640) and the second transmission path (252). The gain of the second antenna (220) can be changed depending on the parameter value (e.g., capacitance or inductance) of at least one second passive element (640) electrically connected to the second transmission path (252).

[0120] For example, at least one processor (120) may be configured to control the first matching circuit (230) and the second matching circuit (240) based on an adaptive impedance tuner (AIT) code for controlling the first matching circuit (230) and the second matching circuit (240). For example, a control signal including the AIT code may be provided to the first matching circuit (230) and the second matching circuit (240). The first matching circuit (230) and the second matching circuit (240) may be operated based on the control signal including the AIT code.

[0121] For example, the AIT code may include a first code, a second code, and a third code. For example, the first code may be a code configured to reduce both the loss of the first transmission path (251) and the loss of the second transmission path (252). For example, when the first matching circuit (230) and the second matching circuit (240) are controlled based on the first code, the first matching circuit (230) and the second matching circuit (240) may be configured to reduce both the loss of the first transmission path (251) and the loss of the second transmission path (252).

[0122] For example, the second code represents a matching setting based on the first antenna (210). According to the matching setting, the impedance matching condition for the first antenna (210) is satisfied, so that the loss of the first transmission path (251) to the first antenna (210) can be reduced. For example, when the first matching circuit (230) and the second matching circuit (240) are controlled by the second code, the impedance tuning setting of the first matching circuit (230) can be changed. For example, when the first matching circuit (230) and the second matching circuit (240) are controlled based on the second code, the gain of the first antenna (210) can be relatively increased as the loss of the first transmission path (251) is reduced. Since the second code is set to be optimized to increase the gain of the first antenna (210), the gain of the second antenna (220) can be relatively decreased.

[0123] For example, the third code represents a matching setting based on the second antenna (220). According to the matching setting, the impedance matching condition of the second antenna (220) is satisfied, so that the loss of the second transmission path (252) to the second antenna (220) can be reduced. For example, when the first matching circuit (230) and the second matching circuit (240) are controlled by the first code, the impedance tuning setting of the second matching circuit (240) can be changed. For example, when the first matching circuit (230) and the second matching circuit (240) are controlled based on the third code, the gain of the second antenna (220) can be relatively increased as the loss of the second transmission path (252) is reduced. Since the third code is set to be optimized to increase the gain of the second antenna (220), the gain of the first antenna (210) can be relatively decreased.

[0124] For example, at least one processor (120) may adjust the gain of the antenna using any one of the first code, the second code, and the third code based on the difference between the first MTPL and the second MTPL. For example, since the first MTPL and the second MTPL are each independently set, a degradation of communication performance may be caused by the difference between the first MTPL and the second MTPL. For example, if the difference is too large, the first antenna (210) and the second antenna (220) may be out of balance, thereby increasing the block error rate. For example, at least one processor (120) may be configured to control the first matching circuit (230) and the second matching circuit (240) based on the second code or the third code in order to balance the first antenna (210) and the second antenna (220) when the difference exceeds a threshold value.

[0125] The operation of at least one processor (120) controlling the first matching circuit (230) and the second matching circuit (240) is described with reference to FIG. 8.

[0126] FIG. 8 is a flowchart illustrating an operation of an exemplary electronic device to change an impedance tuning setting based on a difference in MTPLs for each of a plurality of antennas.

[0127] According to one embodiment, instructions stored in a memory (e.g., memory (130) of FIG. 2) may cause the operations described in FIG. 8 when individually or collectively executed by at least one processor (120).

[0128] As described above, the exemplary electronic device (101) may be configured to set the first MTPL and the second MTPL, respectively. As the first MTPL and the second MTPL are independently set, a difference between the first MTPL and the second MTPL may occur. If the difference between the first MTPL and the second MTPL is too large, the block error rate may increase. The exemplary electronic device (101) may balance the first antenna (210) and the second antenna (220) by controlling the first matching circuit (230) or the second matching circuit (240) based on the difference.

[0129] In this disclosure, expressions such as "more than" or "less than" may be used to determine whether a specific condition is satisfied or fulfilled. However, this is merely an example and does not exclude the use of expressions such as "more than" or "less than." Conditions described as "more than" may be replaced with "more than", and conditions described as "less than" may be replaced with "less than."

[0130] Referring to FIG. 8, in operation 801, at least one processor (120) may set a first MTPL and a second MTPL, respectively.

[0131] For example, operation 801 may be referenced as operation 607 of FIG. 6. For example, at least one processor (120) may be configured to set a maximum transmit power and a first MTPL based on a first MPR, and to set a second MTPL based on a maximum transmit power and a second MPR.

[0132] In operation 803, at least one processor (120) may compare a difference between the first MTPL and the second MTPL with a threshold value and identify whether the difference exceeds the threshold value.

[0133] For example, since the first MTPL and the second MTPL are independently set, the first MTPL and the second MTPL may be different. In uplink MIMO operation, the first antenna (210) and the second antenna (220) transmit an uplink signal to one base station (300), so the maximum transmission power for the first antenna (210) and the maximum transmission power for the second antenna (220) may be the same. For example, if the modulation of the first signal and the modulation of the second signal are different, the first MPR and the second MPR may be different. Even if the maximum transmission power is the same, if the first MPR and the second MPR are different, the first MTPL may be different from the second MTPL.

[0134] For example, at least one processor (120) may identify a difference between the first MTPL and the second MTPL, respectively, and compare the difference with a threshold value. For example, the threshold value may be set based on a block error rate caused by the difference. For example, the block error rate may be calculated based on the following [Mathematical Formula 1].

[0135]

[0136] For example, the threshold value may be set based on an acceptable degree of block error rate caused by the difference between the first MTPL and the second MTPL. For example, a difference exceeding the threshold value may be referred to as causing a block error rate that exceeds the acceptable range for the difference. For example, a difference below the threshold value may be referred to as causing a block error rate that falls within the acceptable range for the difference. However, setting the threshold value based on the block error rate is exemplary and not limiting. For example, the threshold value may be set based on other parameters indicating communication quality.

[0137] For example, if the difference does not exceed the threshold value, operation 805 may be performed. For example, if the difference exceeds the threshold value, operation 807 may be performed.

[0138] In operation 805, at least one processor (120) may set impedance tuning based on both the first antenna (210) and the second antenna (220). For example, at least one processor (120) may set impedance tuning to reduce both the loss of the first transmission path (251) and the loss of the second transmission path (252). Based on the impedance tuning setting, the balance of the first antenna (210) and the second antenna (220) may be maintained. As described with reference to FIG. 7, at least one processor (120) may be configured to control the first matching circuit (230) and the second matching circuit (240) based on any one of the first code, the second code, and the third code. For example, when the difference is less than or equal to a threshold value, the communication quality may be referred to as being in a good state. Since the above difference is less than the threshold value, at least one processor (120) may be configured to control the first matching circuit (230) and the second matching circuit (240) based on a first code. For example, the first code may be a code set to maintain the balance of the first antenna (210) and the second antenna (220). For example, when the first matching circuit (230) and the second matching circuit (240) are controlled based on the first code, the gain of the first antenna (210) and the gain of the second antenna (220) may be maintained.

[0139] At operation 807, at least one processor (120) may identify a larger MTPL among the first MTPL and the second MTPL. For example, at operation 807, at least one processor (120) may identify whether the first MTPL exceeds the second MTPL.

[0140] For example, if the first MTPL exceeds the second MTPL, operation 809 may be performed. For example, if the first MTPL does not exceed the second MTPL, operation 811 may be performed.

[0141] At operation 809, at least one processor (120) may change an impedance tuning setting of the second matching circuit (240).

[0142] For example, if the difference between the first MTPL and the second MTPL exceeds a threshold value, at least one processor (120) can increase the gain of the antenna with the lower MTPL by changing the impedance tuning setting of the matching circuit of the antenna with the lower MTPL. For example, if the first MTPL is greater than the second MTPL, the transmit power of the first antenna (210) can be higher than the transmit power of the second antenna (220). If the transmit power of the first antenna (210) is higher than the transmit power of the second antenna (220), at least one processor (120) can be configured to change the tuning setting of the second matching circuit (240) to increase the gain of the second antenna (220).

[0143] For example, at least one processor (120) may be configured to change an impedance tuning setting of the second matching circuit (240) based on identifying that the first MTPL exceeds the second MTPL and that a difference between the first MTPL and the second MTPL exceeds a threshold value. For example, at least one processor (120) may be configured to control the first matching circuit (230) and the second matching circuit (240) based on a second code that is set to be optimized to increase the gain of the second antenna (220). For example, when the first matching circuit (230) and the second matching circuit (240) are controlled based on the second code, the second switch circuit (630) may change at least one second passive element (640) electrically connected to the second transmission path (252), thereby changing an impedance characteristic of the second transmission path (252) to increase the gain of the second antenna (220). As the gain of the second antenna (220) increases, the difference between the first transmission power and the second transmission power can be compensated.

[0144] For example, when the first matching circuit (230) and the second matching circuit (240) are controlled based on the second code, the gain of the first signal may be relatively reduced, and the gain of the second signal may be relatively increased. In a state where the first MTPL is higher than the second MTPL, the gain of the second signal may be relatively increased, and the gain of the first signal may be relatively decreased, thereby reducing the difference between the first transmission power and the second transmission power. Since the difference between the first transmission power and the second transmission power is reduced, the balance of the first antenna (210) and the second antenna (220) may be adjusted, thereby reducing the block error rate.

[0145] In operation 811, at least one processor (120) may change an impedance tuning setting of the first matching circuit (230).

[0146] For example, when the second MTPL is greater than the first MTPL, the transmission power of the second antenna (220) may be higher than the transmission power of the first antenna (210). When the transmission power of the second antenna (220) is higher than the transmission power of the first antenna (210), at least one processor (120) may be configured to change the tuning setting of the first matching circuit (230) to increase the gain of the first antenna (210).

[0147] For example, at least one processor (120) may be configured to change an impedance tuning setting of the first matching circuit (230) based on identifying that the second MTPL exceeds the first MTPL and that a difference between the first MTPL and the second MTPL exceeds a threshold value. For example, at least one processor (120) may be configured to control the first matching circuit (230) and the second matching circuit (240) based on a first code that is set to be optimized to increase the gain of the first antenna (210). For example, when the first matching circuit (230) and the second matching circuit (240) are controlled based on the first code, the first switch circuit (610) may change at least one first passive element (620) electrically connected to the first transmission path (251), thereby changing an impedance characteristic of the first transmission path (251) to increase the gain of the first antenna (210). As the gain of the first antenna (210) increases, the difference between the first transmission power and the second transmission power can be compensated.

[0148] For example, when the first matching circuit (230) and the second matching circuit (240) are controlled based on the first code, the gain of the second signal may be relatively decreased, and the gain of the first signal may be relatively increased. In a state where the second MTPL is higher than the first MTPL, as the gain of the first signal becomes relatively higher and the gain of the second signal becomes relatively lower, the difference between the first transmission power and the second transmission power may be reduced. Since the difference between the first transmission power and the second transmission power is reduced, the balance of the first antenna (210) and the second antenna (220) may be adjusted, and thus the block error rate may be reduced.

[0149] The exemplary electronic device (101) may be configured to change the impedance setting of the first matching circuit (230) or the second matching circuit (240) to resolve the imbalance between the first antenna (210) and the second antenna (220) caused by setting the first MTPL and the second MTPL, respectively. As described above, by changing the impedance setting of the matching circuit of the antenna having the lower MTPL, the difference between the first transmission power and the second transmission power can be compensated. By compensating for the difference, the imbalance can be reduced, thereby reducing the deterioration of communication performance.

[0150] FIG. 9 is a flowchart illustrating an operation of an exemplary electronic device to set an MTPL for each of a plurality of antennas in consideration of a SAR event.

[0151] According to one embodiment, instructions stored in a memory (e.g., memory (130) of FIG. 2) may cause the operations described in FIG. 9 when individually or collectively executed by at least one processor (120).

[0152] As described above, the location of the first antenna (210) may be different from the location of the second antenna (220). Since the location of the first antenna (210) is different from the location of the second antenna (220), the first SAR event associated with the first antenna (210) and the second SAR event associated with the second antenna (220) may occur independently. The exemplary electronic device (101) may be configured to set the first MTPL and the second MTPL, respectively, in consideration of the SAR event.

[0153] Referring to FIG. 9, in operation 901, at least one processor (120) may set a first MTPL and a second MTPL, respectively.

[0154] For example, operation 901 may be referenced as operation 607 of FIG. 6. For example, at least one processor (120) may be configured to set a maximum transmit power and a first MTPL based on a first MPR, and to set a second MTPL based on a maximum transmit power and a second MPR.

[0155] In operation 903, at least one processor (120) may identify whether a SAR event has occurred.

[0156] For example, at least one processor (120) may identify whether a first SAR event and / or a second SAR event has occurred, respectively. For example, if a receiver-related event has occurred, the second SAR event may occur and the first SAR event may not occur. For example, if only the first SAR event has occurred, limiting the MTPL for the second antenna (220) based on the second SAR event may result in unnecessary power reduction due to the limitation. If only the first SAR event has occurred, the MTPL for the first antenna (210) may be limited based on the first SAR event, but the MTPL for the second antenna (220) may not be limited based on the second SAR event.

[0157] In operation 903, if the occurrence of a SAR event is not identified, operation 901 may be performed again. The case where the occurrence of a SAR event is not identified may be referred to as the case where neither the first SAR event nor the second SAR event is identified. For example, if the occurrence of a SAR event is not identified, the MTPL of the first antenna (210) may be set to the first MTPL set based on the maximum transmit power set by the base station (300) and the first MPR, and the MTPL of the second antenna (220) may be set to the second MTPL set based on the maximum transmit power and the second MPR.

[0158] In operation 903, if the occurrence of a SAR event is identified, operation 905 may be performed. If the occurrence of a SAR event is identified, it may be referred to as a case where a first SAR event and / or a second SAR event is identified.

[0159] In operation 905, at least one processor (120) may identify a third MTPL and a fourth MTPL, respectively, based on a SAR event.

[0160] For example, if a first SAR event occurs, at least one processor (120) may identify a third MTPL for the first antenna (210). For example, at least one processor (120) may identify the first MTPL based on MTPL information related to the SAR event stored in the memory (130). For example, if a receiver-related event occurs for the first antenna (210), the MTPL for the first antenna (210) may be identified as approximately 15 dB. For example, if the first SAR event does not occur, at least one processor (120) may not identify the third MTPL.

[0161] For example, if a second SAR event occurs, at least one processor (120) may identify a fourth MTPL for the second antenna (220). For example, at least one processor (120) may identify the second MTPL based on MTPL information related to the SAR event stored in the memory (130). For example, if a receiver-related event occurs for the second antenna (220), the MTPL for the second antenna (220) may be identified as approximately 15 dB. For example, if the second SAR event does not occur, at least one processor (120) may not identify the fourth MTPL.

[0162] In operation 907, at least one processor (120) may set the MTPL for the first antenna (210) to a lower MTPL among the first MTPL and the third MTPL, if the third MTPL is identified based on the first SAR event.

[0163] For example, at least one processor (120) may compare the first MTPL and the third MTPL and set the lower MTPL as the MTPL for the first antenna (210). For example, if the first MTPL is 20 dB and the second MTPL is 15 dB, at least one processor (120) may set the MTPL for the first antenna (210) to 15 dB. For example, if the first MTPL is 19.5 dB and the second MTPL is 20 dB, at least one processor (120) may set the MTPL for the first antenna (210) to 19.5 dB.

[0164] In operation 909, at least one processor (120) may set the MTPL for the second antenna (220) to a lower MTPL among the second MTPL and the fourth MTPL, if the fourth MTPL is identified based on the second SAR event.

[0165] For example, at least one processor (120) may compare the second MTPL and the fourth MTPL and set the lower MTPL as the MTPL for the second antenna (220). For example, if the second MTPL is 20 dB and the fourth MTPL is 15 dB, at least one processor (120) may set the MTPL for the second antenna (220) to 15 dB. For example, if the second MTPL is 19.5 dB and the fourth MTPL is 20 dB, at least one processor (120) may set the MTPL for the second antenna (220) to 19.5 dB.

[0166] For example, if only the first SAR event occurs, limiting the MTPL for the second antenna (220) based on the second SAR event may result in unnecessary power reduction. As described above, the exemplary electronic device (101) can set the MTPL for the antenna by considering the MTPL set based on the maximum transmit power and MPR and the MTPL set based on the power back-off due to the SAR event. The exemplary electronic device (101) can increase the overall power of the electronic device (101) by setting the MTPL for the first antenna (210) and the MTPL for the second antenna (220), respectively.

[0167] For example, assume that the maximum transmit power set by the base station (300) is about 25 dBm, the first MTPL and the second MTPL are set to MPR corresponding to DFT-s-OFDM QPSK and outer RB allocations, the first SAR event is identified, and thus the third MTPL is set to 19.8 dB, and the second SAR event is not identified. In the above example, if the MTPL for the first antenna and the MTPL for the second antenna are set to the same value and uplink SISO is performed, the MTPL of the first antenna and the MTPL of the second antenna can be set to 19.8 dBm, respectively. Since the MTPLs of both antennas are set to 19.8 dBm, when performing uplink MIMO by dividing the total power of 19.8 dBm in half between the two antennas, the MTPL of the first antenna and the MTPL of the second antenna can be set to 16.8 dBm. In the example described above, when the MTPL for the first antenna and the MTPL for the second antenna are independently set, the MTPL for the first antenna can be set to 19.8 dBm, and the MTPL for the second antenna can be set to 24 dBm. When performing uplink MIMO, the total power is calculated to be 25.4 dBm, so it can be confirmed that the total power can be increased by approximately 5 dBm.

[0168] FIG. 10 illustrates an exemplary electronic device including a housing having a foldable structure.

[0169] The exemplary electronic device (101) can be implemented in various structures. For example, the housing (406) illustrated in FIG. 4d is illustrated as having a bar-shaped structure, but is not limited thereto.

[0170] Referring to FIG. 10, an exemplary electronic device (101) may include a housing (1001) having a foldable structure. The housing (1001) having a foldable structure may be referred to as a foldable housing. For example, the housing (1001) may include a first housing part (1010) and a second housing part (1020) that are rotatably coupled with respect to a folding axis (f). The exemplary electronic device (101) may include a hinge structure (1030) that rotatably couples the first housing part (1010) and the second housing part (1020).

[0171] For example, the wireless communication circuit (192) may be configured to communicate with an external electronic device by using a plurality of conductive portions (1040) that form at least a portion of an edge of the first housing part (1010). For example, the wireless communication circuit (192) may radiate a signal to the external electronic device or receive a signal from the external electronic device by powering at least some of the plurality of conductive portions (1040). For example, a frequency band of a received signal and / or a transmitted signal may be set based on an electrical length of each of the plurality of conductive portions (1040).

[0172] For example, the foldable housing (1001) may have a long structure in a direction perpendicular to the folding axis (f). Referring to FIG. 10, the first housing part (1010) may include a first edge (411) perpendicular to the folding axis (f), a second edge (1012) opposite to the first edge (411), and a third edge (1013) extending from one end of the first edge (411) to one end of the second edge (1012). The third edge (1013) may be parallel to the folding axis (f). For example, the third edge (1013) parallel to the folding axis (f) may be shorter than the first edge (411) and the second edge (1012) perpendicular to the folding axis (f). For example, the second housing part (1020) may include a fourth edge (1021) perpendicular to the folding axis (f), a fifth edge (1022) opposite to the fourth edge (1021), and a sixth edge (1023) extending from one end of the fourth edge (1021) to one end of the fifth edge (1022). The sixth edge (1023) may be parallel to the folding axis (f). For example, the sixth edge (1023) parallel to the folding axis (f) may be shorter than the fourth edge (1021) and the fifth edge (1022) perpendicular to the folding axis (f).

[0173] For example, the first housing part (1010) and / or the second housing part (1020) may include a plurality of conductive portions (1040) and a plurality of non-conductive portions (1050). The conductive portion forming the antenna may be electrically isolated from other conductive portions by the non-conductive portions. For example, the non-conductive portion may include, but is not limited to, polycarbonate (PC). The non-conductive portion may serve as a dielectric and may limit the length of the conductive portion operating as the antenna.

[0174] For example, the plurality of conductive portions (1040) may include a first conductive portion (1041) and a second conductive portion (1042). For example, the first conductive portion (1041) may be formed between a first non-conductive portion (1051) and a second non-conductive portion (1052) within the sixth edge (1023). For example, the second conductive portion (1042) may be formed between a third non-conductive portion (1053) and a fourth non-conductive portion (1054) within the third edge (1013).

[0175] For example, the first antenna (210) and the second antenna (220) may be positioned at different positions with respect to the folding axis (f). For example, the first antenna (210) may be positioned in the second housing part (1020). For example, the second antenna (220) may be positioned in the first housing part (1010).

[0176] An electronic device (101) is provided. The electronic device (101) may include at least one processor (120) including a processing circuit. The electronic device (101) may include a memory (130) including one or more storage media for storing instructions. The electronic device (101) may include a wireless communication circuit (192). The electronic device (101) may include a first antenna (210). The electronic device (101) may include a second antenna (220). The electronic device (101) may include a first matching circuit (230) electrically connected to the first antenna (210). The electronic device (101) may include a second matching circuit (240) electrically connected to the second antenna (220). The instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to obtain information about a maximum transmit power for transmission of an uplink signal. The instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to identify a first maximum power reduction (MPR) for the first antenna (210) and a second MPR for the second antenna (220), which is independent of the first MPR. The instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to set a first maximum transmitter power limit (MTPL) for the first antenna (210) based on the information about the maximum transmit power and the first MPR.The instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to set a second MTPL for the second antenna (220) based on the information about the maximum transmit power and the second MPR. The instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to transmit a first signal through the first antenna (210) and to transmit a second signal through the second antenna (220) by changing an impedance tuning setting of at least one matching circuit among the first matching circuit (230) or the second matching circuit (240) based on a difference between the first MTPL and the second MTPL exceeding a threshold value.

[0177] For example, the wireless communication circuit (192) may use the first antenna (210) and the second antenna (220) based on the first MTPL and the second MTPL for MIMO (multi input multi output).

[0178] For example, the instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to change an impedance tuning setting of the second matching circuit (240) based on identifying that the first MTPL exceeds the second MTPL and that the difference exceeds a threshold value. The instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to change an impedance tuning setting of the first matching circuit (230) based on identifying that the second MTPL exceeds the first MTPL and that the difference exceeds a threshold value.

[0179] For example, the instructions may include information (510) related to a specified MPR based on a modulation scheme and a resource block (RB).

[0180] For example, the instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to identify the first MPR based on the first modulation scheme and the first resource block associated with the first signal. The instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to identify the second MPR based on the second modulation scheme and the second resource block associated with the second signal when executing the instructions stored in the memory (130).

[0181] For example, the instructions may include MTPL information (520) related to a specific absorption rate (SAR) event set based on a power backoff corresponding to the SAR event.

[0182] For example, the instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to identify a third MTPL for the first antenna (210) based on a first SAR event associated with the first antenna (210). The instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to, when executing the instructions stored in the memory (130), identify a fourth MTPL for the second antenna (220) based on a second SAR event associated with the second antenna (220).

[0183] For example, the instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to set the MTPL for the first antenna (210) to a lower MTPL between the first MTPL and the third MTPL when the third MTPL is identified. The instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to set the MTPL for the second antenna (220) to a lower MTPL between the second MTPL and the fourth MTPL when the fourth MTPL is identified.

[0184] For example, the SAR event may include at least one of an event related to a receiver, an event related to the establishment of a communication channel, an event related to the connection of an external connection terminal, or a grip event identified by a grip sensor.

[0185] For example, the electronic device (101) may further include a housing (406) including a plurality of conductive portions (430) and a plurality of non-conductive portions (440) disposed between the plurality of conductive portions (430). The first antenna (210) may include one of the plurality of conductive portions (430). The second antenna (220) may include another one of the plurality of conductive portions (430).

[0186] For example, the position of the first antenna (210) may be substantially opposite to the position of the second antenna (220).

[0187] For example, the instructions, when individually or collectively executed by the at least one processor (120), may cause the electronic device (101) to change an impedance tuning setting of a matching circuit of an antenna having a lower MTPL among the first MTPL and the second MTPL.

[0188] For example, the housing (1001) may include a first housing part (1010). It may include a second housing part (1020) that is rotatably coupled to the first housing part (1010) with respect to a folding axis. The housing (1001) may include a hinge structure (1030) that rotatably couples the first housing part (1010) and the second housing part (1020).

[0189] For example, the first signal and the second signal may include a sounding reference signal (SRS).

[0190] For example, the first matching circuit (230) may include a first switch circuit (610). The first matching circuit (230) may include at least one first passive element (620) electrically connected to a first transmission path (251) between the wireless communication circuit (192) and the first antenna (210) through the first switch circuit (610). The second matching circuit (240) may include a second switch circuit (630). The second matching circuit (240) may include at least one second passive element (640) electrically connected to a second transmission path (252) between the wireless communication circuit (192) and the second antenna (220) through the second switch circuit (630).

[0191] A method of an electronic device is provided. The method may include, for example, an operation of obtaining information about a maximum transmit power for an uplink transmission. The method may include an operation of identifying a first maximum power reduction (MPR) for a first antenna (210) and a second MPR for a second antenna (220), which is independent of the first MPR. The method may include an operation of setting a first maximum transmitter power limit (MTPL) for the first antenna (210) based on the information about the maximum transmit power and the first MPR. The method may include an operation of setting a second MTPL for the second antenna (220) based on the information about the maximum transmit power and the second MPR. The method may include an operation of transmitting a first signal through the first antenna (210) and transmitting a second signal through the second antenna (220) by changing an impedance tuning setting of a matching circuit of an antenna having a lower MTPL among the first MTPL and the second MTPL based on a difference between the first MTPL and the second MTPL exceeding a threshold value.

[0192] The method may include an operation of changing an impedance tuning setting of a second matching circuit (240) electrically connected to the second antenna (220) based on identifying that the first MTPL exceeds the second MTPL and that the difference exceeds a threshold value. The method may include an operation of changing an impedance tuning setting of a first matching circuit (230) electrically connected to the first antenna (210) based on identifying that the second MTPL exceeds the first MTPL and that the difference exceeds a threshold value.

[0193] For example, the method may include an operation of identifying the first MPR based on the first signal, the first modulation scheme, and the first resource block. The method may include an operation of identifying the second MPR based on the second modulation scheme and the second resource block associated with the second signal.

[0194] For example, the method may include identifying a third MTPL for the first antenna (210) based on a first SAR event associated with the first antenna (210). The method may include identifying a fourth MTPL for the second antenna (220) based on a second SAR event associated with the second antenna (220).

[0195] For example, the method may include, for example, when the third MTPL is identified, setting the MTPL for the first antenna (210) to a lower MTPL between the first MTPL and the third MTPL. The method may include, when the fourth MTPL is identified, setting the MTPL for the second antenna (220) to a lower MTPL between the second MTPL and the fourth MTPL.

[0196] For example, the first signal and the second signal may include a sounding reference signal (SRS).

[0197] Electronic devices according to the various embodiments disclosed in this document may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, electronic devices, or home appliances. Electronic devices according to the embodiments of this document are not limited to the aforementioned devices.

[0198] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "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" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0199] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0200] Various embodiments of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (120) (e.g., the processor (120)) of a machine (e.g., an electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0201] According to one embodiment, the method according to various embodiments disclosed in the present document may be provided as included 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 may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as a memory (130) of a manufacturer's server, an application store's server, or a relay server.

[0202] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In electronic devices, At least one processor comprising a processing circuit; A memory including one or more storage media for storing instructions; wireless communication circuit; first antenna; Second antenna; a first matching circuit electrically connected to the first antenna; and A second matching circuit electrically connected to the second antenna is included, The above instructions, when individually or collectively executed by the at least one processor, cause the electronic device to: Obtain information about the maximum transmission power for transmission of uplink signals, Identifying a first maximum power reduction (MPR) for the first antenna and a second MPR for the second antenna, which is independent of the first MPR, respectively; Based on the information about the maximum transmit power and the first MPR, a first maximum transmitter power limit (MTPL) for the first antenna is set, Based on the information about the maximum transmit power and the second MPR, a second MTPL for the second antenna is set, By changing the impedance tuning setting of at least one of the first matching circuit and the second matching circuit based on the difference between the first MTPL and the second MTPL exceeding the threshold value, thereby causing the first signal to be transmitted through the first antenna and the second signal to be transmitted through the second antenna. Electronic devices.

2. In paragraph 1, The above wireless communication circuit, For MIMO (multi input multi output), based on the first MTPL and the second MTPL, the first antenna and the second antenna are used. Electronic devices.

3. In paragraph 1 or 2, The above instructions, when individually or collectively executed by the at least one processor, cause the electronic device to: Based on identifying that the first MTPL exceeds the second MTPL and that the difference exceeds a threshold value, changing the impedance tuning setting of the second matching circuit, causing the impedance tuning setting of the first matching circuit to be changed based on identifying that the second MTPL exceeds the first MTPL and that the difference exceeds a threshold value; Electronic devices.

4. In any one of paragraphs 1 to 3, The above instructions are, Contains information related to a specified MPR based on a modulation scheme and a resource block (RB). Electronic devices.

5. In paragraph 4, The above instructions, when individually or collectively executed by the at least one processor, cause the electronic device to: Identifying the first MPR based on the first modulation scheme and the first resource block associated with the first signal, causing the second MPR to be identified based on the second modulation scheme and the second resource block associated with the second signal; Electronic devices.

6. In any one of paragraphs 1 to 5, The above instructions are, Including MTPL information related to a SAR event, which is set based on a power backoff corresponding to the SAR (specific absorption rate) event. Electronic devices.

7. In paragraph 6, The above instructions, when individually or collectively executed by the at least one processor, cause the electronic device to: Identifying a third MTPL for the first antenna based on a first SAR event associated with the first antenna, causing a fourth MTPL for the second antenna to be identified based on a second SAR event associated with the second antenna; Electronic devices.

8. In paragraph 7, The above instructions, when individually or collectively executed by the at least one processor, cause the electronic device to: Based on identifying the third MTPL, the MTPL for the first antenna is set to a lower MTPL among the first MTPL and the third MTPL, Based on identifying the fourth MTPL, causing the MTPL for the second antenna to be set to a lower MTPL among the second MTPL and the fourth MTPL. Electronic devices.

9. In any one of paragraphs 6 to 8, The above SAR event is, including at least one of an event related to a receiver, an event related to establishing a communication channel, an event related to connecting an external connection terminal, or a grip event identified by a grip sensor; Electronic devices.

10. In any one of paragraphs 1 to 9, Further comprising a housing including a plurality of conductive portions and a plurality of non-conductive portions disposed between the plurality of conductive portions, The above first antenna, comprising one of the above multiple challenging portions, The above second antenna, comprising another one of the above multiple challenging portions; Electronic devices.

11. In paragraph 10, The position of the above first antenna is, substantially opposite to the position of the second antenna, Electronic devices.

12. In any one of paragraphs 1 to 11, The above instructions, when individually or collectively executed by the at least one processor, cause the electronic device to: Causing to change the impedance tuning setting of the matching circuit of the antenna having the lower MTPL among the first MTPL and the second MTPL, Electronic devices.

13. In any one of paragraphs 1 to 12, The above first signal and the above second signal, Containing a sounding reference signal (SRS), Electronic devices.

14. In any one of paragraphs 1 to 13, The above first matching circuit, First switch circuit, and At least one first passive element electrically connected to a first transmission path between the wireless communication circuit and the first antenna through the first switching circuit, The above second matching circuit, Second switch circuit, and At least one second passive element electrically connected to a second transmission path between the wireless communication circuit and the second antenna through the second switching circuit; Electronic devices.

15. In the method of an electronic device, An operation for obtaining information about the maximum transmission power for uplink transmission; An operation for identifying a first maximum power reduction (MPR) for a first antenna and a second MPR for a second antenna, each MPR being independent of the first MPR; An operation of setting a first maximum transmitter power limit (MTPL) for the first antenna based on the information about the maximum transmit power and the first MPR; An operation of setting a second MTPL for the second antenna based on the information about the maximum transmit power and the second MPR; and An operation of transmitting a first signal through the first antenna and transmitting a second signal through the second antenna by changing an impedance tuning setting of a matching circuit of an antenna having a lower MTPL among the first MTPL and the second MTPL based on a difference between the first MTPL and the second MTPL exceeding a threshold value, method.

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