WO2020159208A1 - Procédé de gestion d'impédance d'antenne et dispositif électronique associé - Google Patents

Procédé de gestion d'impédance d'antenne et dispositif électronique associé Download PDF

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Publication number
WO2020159208A1
WO2020159208A1 PCT/KR2020/001314 KR2020001314W WO2020159208A1 WO 2020159208 A1 WO2020159208 A1 WO 2020159208A1 KR 2020001314 W KR2020001314 W KR 2020001314W WO 2020159208 A1 WO2020159208 A1 WO 2020159208A1
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WIPO (PCT)
Prior art keywords
impedance
antenna
electronic device
power
electric field
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PCT/KR2020/001314
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English (en)
Korean (ko)
Inventor
윤용빈
박종호
Original Assignee
삼성전자 주식회사
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Publication of WO2020159208A1 publication Critical patent/WO2020159208A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H04B17/14—Monitoring; Testing of transmitters for calibration of the whole transmission and reception path, e.g. self-test loop-back
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H04B17/12—Monitoring; Testing of transmitters for calibration of transmit antennas, e.g. of the amplitude or phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H04B17/13—Monitoring; Testing of transmitters for calibration of power amplifiers, e.g. gain or non-linearity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H04B2001/0416—Circuits with power amplifiers having gain or transmission power control

Definitions

  • Various embodiments of the present invention relate to a method for operating an impedance of an antenna and its electronic device.
  • the antenna of the electronic device may serve to transmit or receive a radio frequency (RF) signal.
  • the antenna of the electronic device may include a tuner (or impedance matching device) that performs frequency tuning.
  • the impedance matching condition of the electronic device may change according to a state of the surrounding environment (for example, a state gripped by a user, a state stored in a pocket or a bag, etc.), which may degrade the antenna's transmission and reception radiation performance. have.
  • a state of the surrounding environment for example, a state gripped by a user, a state stored in a pocket or a bag, etc.
  • an adaptive tuning antenna circuit is used to adjust the impedance of the antenna when the impedance matching condition is changed so that the antenna has optimal transmit/receive radiation performance.
  • the electronic device may perform impedance matching by adjusting the impedance of the antenna so that the power of the transmission signal of the electronic device is maximized, regardless of the size of the Tx power of the transmission signal requested by the network.
  • the impedance matching method the impedance matching is performed such that the power of the transmission signal of the electronic device is maximized without considering the electric field situation (for example, a heavy field and/or a weak field). There is a side that can't maximize the benefits of data throughput.
  • impedance consumption does not consider the current consumption of the electronic device, there is a problem that the electronic device cannot efficiently use power.
  • Various embodiments of the present invention disclose a method of increasing the gain of the data throughput of the electronic device and adjusting the efficiency of the power of the transmission signal by adjusting the impedance of the antenna based on the power of the transmission signal of the electronic device.
  • An electronic device includes an antenna, a power amplifier electrically connected to the antenna, and a tuner capable of adjusting a matching value of the impedance of the antenna, a power amplifying circuit, and the power amplifying circuit as an external electronic device using the antenna.
  • a communication circuit including a transmission terminal capable of transmitting the amplified transmission signal and a reception terminal capable of receiving a reception signal received from the external electronic device using the antenna, and at least one processor,
  • the at least one processor checks an electric field state related to the transmission signal or the received signal between the external electronic device and the electronic device, and when the electric field state satisfies a first specified condition, the tuner is used Adjusting the impedance of the antenna to a first impedance so as to resonate at a reception frequency corresponding to the received signal, and transmitting the transmission signal or receiving the received signal while being adjusted to the first impedance, and When the electric field condition satisfies the second specified condition, the impedance of the antenna is adjusted to a second impedance so that the efficiency of the power amplification circuit can be relatively increased using the tuner, and the second impedance is adjusted. It may be configured to transmit the transmission signal in a state or to receive the reception signal.
  • the method of operating an impedance of an antenna includes: checking an electric field state related to a transmission signal or a reception signal between an external electronic device and the electronic device, and when the electric field state satisfies a first specified condition, the electronic Adjust the impedance of the antenna of the electronic device to a first impedance so as to resonate at a reception frequency corresponding to the received signal using the tuner of the device, and transmit the transmission signal in a state adjusted to the first impedance or Or the operation of receiving the received signal, and when the electric field state satisfies the second specified condition, the impedance of the antenna using the tuner to increase the efficiency of the power amplifier circuit of the electronic device relatively high And adjusting the impedance and transmitting the transmission signal or receiving the reception signal in a state adjusted to the second impedance.
  • Various embodiments of the present invention by adjusting the impedance of the antenna according to the wireless communication situation or the power management situation of the electronic device, it is possible to maximize the data throughput (or data transmission rate) gain of the electronic device in the heavy field.
  • Various embodiments of the present invention by adjusting the impedance of the antenna according to the wireless communication situation or power management situation of the electronic device, it is possible to efficiently use the power of the transmission signal in the weak electric field to reduce the current consumption of the electronic device.
  • FIG. 1 is a block diagram of an electronic device in a network environment according to various embodiments of the present disclosure.
  • FIG. 2 is a block diagram of an electronic device according to various embodiments of the present disclosure.
  • FIG. 3 is a graph illustrating a current consumption of an electronic device according to power of a transmission signal in an electronic device according to various embodiments of the present disclosure.
  • FIG. 4 is a graph illustrating a change in a voltage standing wave ratio of an antenna according to adjustment of impedance characteristics in an electronic device according to various embodiments.
  • FIG. 5 is a Smith chart illustrating a method of controlling the impedance of an antenna in an electronic device according to various embodiments of the present disclosure.
  • FIG. 6 is a graph illustrating current consumption of an electronic device according to power of a transmission signal in an electronic device according to various embodiments of the present disclosure.
  • FIG. 7 is a flowchart illustrating an example of a method of controlling impedance of an antenna in an electronic device according to various embodiments of the present disclosure.
  • FIG. 8 is a flowchart illustrating another example of a method of controlling impedance of an antenna in an electronic device according to various embodiments of the present disclosure.
  • the electronic device 101 communicates with the electronic device 102 through the first network 198 (eg, a short-range wireless communication network), or the second network 199. It may communicate with the electronic device 104 or the server 108 through (eg, a remote wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108.
  • the first network 198 eg, a short-range wireless communication network
  • the server 108 e.g, a remote wireless communication network
  • the electronic device 101 may communicate with the electronic device 104 through the server 108.
  • the electronic device 101 may include a processor 120, a memory 130, an input device 150, an audio output device 155, a display device 160, an audio module 170, a sensor module ( 176), interface 177, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196, or antenna module 197 ).
  • the components for example, the display device 160 or the camera module 180
  • the sensor module 176 eg, a fingerprint sensor, an iris sensor, or an illuminance sensor
  • the display device 160 eg, a display
  • the sensor module 176 eg, a fingerprint sensor, an iris sensor, or an illuminance sensor
  • the processor 120 executes software (eg, the program 140) to execute at least one other component (eg, hardware or software component) of the electronic device 101 connected to the processor 120. It can be controlled and can perform various data processing or operations. According to an embodiment, as at least a part of data processing or operation, the processor 120 may receive commands or data received from other components (eg, the sensor module 176 or the communication module 190) in the volatile memory 132. Loaded into, process instructions or data stored in volatile memory 132, and store result data in non-volatile memory 134.
  • software eg, the program 140
  • the processor 120 may receive commands or data received from other components (eg, the sensor module 176 or the communication module 190) in the volatile memory 132. Loaded into, process instructions or data stored in volatile memory 132, and store result data in non-volatile memory 134.
  • the processor 120 may include a main processor 121 (eg, a central processing unit or an application processor), and an auxiliary processor 123 (eg, a graphics processing unit, an image signal processor) that may be operated independently or together. , Sensor hub processor, or communication processor). Additionally or alternatively, the coprocessor 123 may be set to use lower power than the main processor 121, or to be specialized for a specified function. The coprocessor 123 may be implemented separately from the main processor 121 or as a part thereof.
  • a main processor 121 eg, a central processing unit or an application processor
  • an auxiliary processor 123 eg, a graphics processing unit, an image signal processor
  • the coprocessor 123 may be set to use lower power than the main processor 121, or to be specialized for a specified function.
  • the coprocessor 123 may be implemented separately from the main processor 121 or as a part thereof.
  • the coprocessor 123 may replace, for example, the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or the main processor 121 may be active (eg, execute an application) ) With the main processor 121 while in the state, at least one component of the components of the electronic device 101 (eg, the display device 160, the sensor module 176, or the communication module 190) It can control at least some of the functions or states associated with.
  • the coprocessor 123 eg, an image signal processor or communication processor
  • may be implemented as part of other functionally related components eg, the camera module 180 or the communication module 190). have.
  • the memory 130 may store various data used by at least one component of the electronic device 101 (eg, the processor 120 or the sensor module 176).
  • the data may include, for example, software (eg, the program 140) and input data or output data for commands related thereto.
  • the memory 130 may include a volatile memory 132 or a nonvolatile memory 134.
  • 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.
  • the input device 150 may receive commands or data to be used for components (eg, the processor 120) of the electronic device 101 from outside (eg, a user) of the electronic device 101.
  • the input device 150 may include, for example, a microphone, mouse, keyboard, or digital pen (eg, a stylus pen).
  • the audio output device 155 may output an audio signal to the outside of the electronic device 101.
  • the audio output device 155 may include, for example, a speaker or a receiver.
  • the speaker can be used for general purposes such as multimedia playback or recording playback, and the receiver can be used to receive an incoming call.
  • the receiver may be implemented separately from the speaker, or as part thereof.
  • the display device 160 may visually provide information to the outside of the electronic device 101 (eg, a user).
  • the display device 160 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the device.
  • the display device 160 may include a touch circuitry configured to sense a touch, or a sensor circuit (eg, a pressure sensor) configured to measure the strength of the force generated by the touch. have.
  • the audio module 170 may convert sound into an electrical signal, or vice versa. According to an embodiment of the present disclosure, the audio module 170 acquires sound through the input device 150 or directly or wirelessly connects to the sound output device 155 or the electronic device 101 (for example, an external electronic device). Sound may be output through the electronic device 102 (eg, speakers or headphones).
  • the audio module 170 acquires sound through the input device 150 or directly or wirelessly connects to the sound output device 155 or the electronic device 101 (for example, an external electronic device). Sound may be output through the electronic device 102 (eg, speakers or headphones).
  • the sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the detected state can do.
  • the sensor module 176 includes, 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 infrared (IR) sensor, a biological sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.
  • the interface 177 may support one or more designated protocols that can be used for the electronic device 101 to be directly or wirelessly connected to an external electronic device (eg, the electronic device 102).
  • 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.
  • HDMI high definition multimedia interface
  • USB universal serial bus
  • SD card interface Secure Digital Card interface
  • audio interface audio interface
  • the connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102 ).
  • the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).
  • the haptic module 179 may convert electrical signals into mechanical stimuli (eg, vibration or movement) or electrical stimuli that the user can perceive through tactile or motor sensations.
  • the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
  • the camera module 180 may 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.
  • the power management module 188 may manage power supplied to the electronic device 101.
  • the power management module 388 may be implemented, for example, as at least a part of a power management integrated circuit (PMIC).
  • PMIC power management integrated circuit
  • the battery 189 may supply power to at least one component of the electronic device 101.
  • the battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.
  • the communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishing and performing communication through the established communication channel.
  • the communication module 190 operates independently of the processor 120 (eg, an application processor) and may include one or more communication processors supporting direct (eg, wired) communication or wireless communication.
  • the communication module 190 may include a wireless communication module 192 (eg, 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 (eg : Local area network (LAN) communication module, or power line communication module.
  • a wireless communication module 192 eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module
  • GNSS global navigation satellite system
  • wired communication module 194 eg : Local area network (LAN) communication module, or power line communication module.
  • Corresponding communication module among these communication modules includes a first network 198 (for example, a short-range communication network such as Bluetooth, WiFi direct, or infrared data association (IrDA)) or a second network 199 (for example, a cellular network, the Internet, or It can communicate with external electronic devices through a computer network (eg, a telecommunication network, such as a
  • the wireless communication module 192 uses a subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 in a communication network such as the first network 198 or the second network 199.
  • IMSI International Mobile Subscriber Identifier
  • the antenna module 197 may transmit a signal or power to the outside (eg, an external electronic device) or receive it from the outside.
  • the antenna module may include a single antenna including a conductor formed on a substrate (eg, a PCB) or a radiator made of a conductive pattern.
  • the antenna module 197 may include a plurality of antennas. 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, is transmitted from the plurality of antennas by, for example, the communication module 190. Can be selected.
  • the signal or power may be transmitted or received between the communication module 190 and an external electronic device through the at least one selected antenna.
  • other components eg, RFIC
  • other than the radiator may be additionally formed as part of the antenna module 197.
  • peripheral devices for example, a bus, a general purpose input and output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)
  • GPIO general purpose input and output
  • SPI serial peripheral interface
  • MIPI mobile industry processor interface
  • the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199.
  • Each of the electronic devices 102 and 104 may be the same or a different type of device from the electronic device 101.
  • all or some of the operations performed on the electronic device 101 may be performed on one or more external devices of the external electronic devices 102, 104, or 108.
  • the electronic device 101 when the electronic device 101 needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 101 instead executes the function or service itself.
  • one or more external electronic devices may be requested to perform at least a portion of the function or the service.
  • the one or more external electronic devices receiving the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and deliver the result of the execution to the electronic device 101.
  • the electronic device 101 may process the result, as it is or additionally, and provide it as at least part of a response to the request.
  • cloud computing, distributed computing, or client-server computing technology can be used, for example.
  • FIG. 2 is a block diagram of an electronic device according to various embodiments of the present disclosure.
  • the electronic device 201 (eg, the electronic device 101 of FIG. 1) includes a processor 210 (eg, the processor 120 of FIG. 1 ), a transceiver 220, and a power amplifying circuit 230 ), a tuner 240, a coupler 250, an antenna 260, or a ground portion 270.
  • the processor 210 may perform various functions for the electronic device 201.
  • the processor 210 may process data transmitted and received through the transceiver 220.
  • the processor 210 may control the operation of various circuits in the transceiver 220.
  • the transceiver 220 may include a transmitter (not shown) and a receiver (not shown) that support two-way wireless communication.
  • the transceiver 220 is a long term evolution (LTE), code division multiple access (CDMA), CDMA 2000, wideband CDMA (WCDMA), global mobile communication System (GSM, global system for mobile communications), IEEE 802.11. And so on.
  • LTE long term evolution
  • CDMA code division multiple access
  • CDMA 2000 CDMA 2000
  • WCDMA wideband CDMA
  • GSM global mobile communication System
  • IEEE 802.11 IEEE 802.11
  • the transceiver 220 may be referred to as a communication circuit.
  • the power amplification circuit 230 may amplify the signal received from the transceiver 220 to output an amplified RF signal having an appropriate output power level.
  • the power amplifier circuit 230 may be referred to as a power amplifier module with integrated duplexer (PAMid).
  • PAMid power amplifier module with integrated duplexer
  • the power amplification circuit 230 may be included in the transmitter of the transceiver 220.
  • the tuner 240 may include at least one reactive element (eg, a capacitor and/or inductor) and at least one switch. According to various embodiments, the tuner 240 selectively activates (or deactivates) at least a portion of at least one reactive element (eg, at least one capacitor and/or at least one inductor) under the control of the processor 210. ), it is possible to perform impedance matching for the antenna (adjust the impedance characteristics of the antenna). According to various embodiments, the tuner 240 may be referred to as an impedance matching circuit, an impedance adjustment circuit, or a tunable matching circuit. According to various embodiments, the tuner 240 may be included in the transmitter of the transceiver 220.
  • the tuner 240 may be included in the transmitter of the transceiver 220.
  • the coupler 250 may provide the transmission signal amplified by the power amplification circuit 230 to the antenna 260 through the tuner 240. According to various embodiments, the coupler 250 may provide information on the power of the amplified transmission signal and/or information on the power of the feedback signal of the transmission signal to the processor 210. The processor 210 may determine the antenna impedance matching control value based on the information provided from the coupler 250, and output the determined antenna impedance matching control value to the tuner 240.
  • the ground unit 270 may control the length of the antenna according to the frequency by changing the ground path of the antenna 260.
  • An electronic device is an antenna (eg, the antenna 260 of FIG. 2) and is electrically connected to the antenna, A tuner capable of adjusting the matching value of the antenna impedance (eg, tuner 240 in FIG. 2), a power amplifying circuit (eg, power amplifying circuit 230 in FIG. 2), and an external electronic device using the antenna.
  • a communication circuit including a transmission terminal capable of transmitting an amplified transmission signal through the power amplification circuit, and a reception terminal capable of receiving a reception signal received from the external electronic device using the antenna (eg, FIG. 1)
  • At least one processor eg, the processor 120 of FIG. 1 or the processor 210 of FIG. 2
  • the at least one processor comprises , Checking an electric field state related to the transmission signal or the received signal between the external electronic device and the electronic device, and when the electric field state satisfies a first specified condition, the impedance of the antenna is measured using the tuner.
  • the impedance of the antenna is adjusted to a second impedance so that the efficiency of the power amplification circuit can be relatively increased using the tuner, and the transmission signal is adjusted to the second impedance. It can be set to transmit or receive the received signal.
  • the at least one processor may use the tuner to adjust the impedance of the antenna so that the gain of the power amplification circuit can be relatively high. It may be set to adjust to impedance, and to transmit the transmission signal or to receive the received signal in a state adjusted to the third impedance.
  • the at least one processor may be set to adjust the impedance of the antenna by controlling the tuner to activate at least a portion of at least one capacitor or at least one inductor included in the tuner. .
  • the electronic device further includes a ground portion electrically connected to the antenna, and the at least one processor adjusts the impedance of the antenna by controlling the ground portion to change the ground path of the antenna. Can be set.
  • the at least one processor in the state in which the electric field state satisfies the first specified condition, has a difference in consumption current according to the output signal strength of the power amplifying circuit that differs by a first value or more. In this case, it may be set to adjust the first specified condition so that the deviation of the current consumption is within the first value.
  • the at least one processor may have an output signal strength of the power amplifying circuit and an output signal strength of a gain priority condition of the power amplifying circuit in a condition in which the electric field condition satisfies the second specified condition.
  • it is set to adjust the second specified condition so that the difference between the output signal strength of the power amplifier circuit and the output signal strength of the gain priority condition of the power amplifier circuit is within the second value.
  • the at least one processor determines that the electric field state satisfies the first specified condition, and the transmission signal Alternatively, when the power of the received signal is included in the second range, it is determined that the electric field state satisfies the second specified condition, and when the power of the transmission signal or the received signal is included in the third range, The electric field state is set to determine that the third specified condition is satisfied, the minimum value of the second range is set to a value greater than the maximum value of the first range, and the maximum value of the second range is the It may be set to a value smaller than the minimum value of the third range.
  • the at least one processor may be configured from a first table including a plurality of codes set such that the resonance of the antenna is optimized for reception (Rx).
  • the antenna may be set to adjust the impedance of the antenna to the first impedance by identifying a code corresponding to the power of the transmission signal or the received signal, and controlling the tuner based on the identified code.
  • the at least one processor may include a plurality of codes set to maximize power efficiency of the power amplifying circuit. It may be set to adjust the impedance of the antenna to the second impedance by identifying a code corresponding to the power of the transmitted signal or the received signal, and controlling the tuner based on the identified code.
  • the at least one processor may transmit the signal from the third table including a code set to maximize the gain of the power amplifying circuit, or
  • the antenna may be set to adjust the impedance of the antenna to the third impedance by identifying a code corresponding to the power of the received signal and controlling the tuner based on the identified code.
  • 3 is a graph illustrating a current consumption of an electronic device according to power of a transmission signal in an electronic device according to various embodiments of the present disclosure.
  • 4 is a graph illustrating a change in a voltage standing wave ratio of an antenna according to adjustment of impedance characteristics in an electronic device according to various embodiments.
  • the current consumption 301 of the electronic device is an antenna terminal of the electronic device 201. As the power of the transmitted transmission signal increases, it may gradually increase.
  • the deviation of the current consumption of the electronic device 201 is small. It can have a value (eg less than 10mA).
  • the electronic device 201 uses the code set so that the resonance of the antenna is optimized for reception (Rx) in order to maximize data throughput. Can be adjusted.
  • the impedance characteristic of the antenna when the impedance characteristic of the antenna is adjusted based on a code set such that the resonance of the antenna is optimized for transmission (Tx), the power of the transmission signal transmitted to the antenna terminal is the first range ( 302), the impedance characteristic of the antenna may be adjusted based on a code set such that the resonance of the antenna is optimized for reception (Rx). In this case, the voltage standing wave ratio of the antenna may be changed from the first value 401 to the second value 403, as shown in FIG. 4.
  • a code set such that the resonance of the antenna is optimized for reception (Rx) may be pre-table (eg, the first table) and stored in the electronic device 201.
  • ⁇ Table 1> is a code set so that the resonance of the antenna in a specific frequency band is optimized for reception (Rx) when the power of the transmission signal transmitted to the antenna terminal of the electronic device 201 falls within the first range 302 It is a data value measured by adjusting the impedance characteristics of the antenna.
  • the electronic device 201 changes the impedance characteristics of the antenna using a code set such that the antenna resonance is optimized for reception (Rx), the antenna resonance is optimized for transmission (Tx). It can be seen that, while the impedance characteristic of the antenna is changed by using the code set as much as possible, the average transmission signal power (Ave Tx) is significantly increased, while the consumption current of the electronic device is not significantly increased. Accordingly, when the power of the transmission signal falls within the first range 302, the electronic device 201 adjusts the impedance characteristic of the antenna using a code set such that the resonance of the antenna is optimized for reception (Rx), thereby controlling the electronic device. It is possible to increase data throughput (or data transmission speed) without significantly changing the current consumption of.
  • an impedance characteristic of the antenna may be adjusted using a code set such that the power efficiency of the power amplifying circuit 230 of the electronic device 201 is maximized.
  • codes configured to maximize power efficiency of the power amplifying circuit 230 of the electronic device 201 may be pre-table (eg, the second table) and stored in the electronic device 201. .
  • the electronic device 201 may To optimize the radiation performance (eg, total radiated power (TRP) or total isotropic sensitivity (TIS)), the impedance characteristics of the antenna may be adjusted by using a code set to maximize the gain of the power amplifying circuit 230.
  • the code set to maximize the gain of the power amplifying circuit 230 of the electronic device 201 may be pre-table (eg, the third table) and stored in the electronic device 201.
  • FIG. 5 is a Smith chart illustrating a method of controlling the impedance of an antenna in an electronic device according to various embodiments of the present disclosure.
  • the Smith chart may be a general method for describing the impedance of a complex value normalized to a characteristic impedance (Zo), which may be 50 ohms or 75 ohms.
  • Zo characteristic impedance
  • a semicircle on the horizontal axis may represent a positive impedance
  • a semicircle under the horizontal axis may represent a negative impedance.
  • an impedance of an antenna terminal of an electronic device may be located at the first point 501 of the Smith chart.
  • the electronic device 201 may include a power amplifying circuit (eg, 10 m).
  • the impedance characteristic of the antenna stage may be adjusted using a code (E-AIT-Code) set to maximize power efficiency of the power amplifying circuit 230 of FIG. 2.
  • E-AIT-Code code set to maximize power efficiency of the power amplifying circuit 230 of FIG. 2.
  • the impedance of the antenna end of the electronic device 201 may be moved from the first point 501 on the Smith chart to a point included in the second area 503.
  • the electronic device 201 when the power of the transmission signal transmitted to the antenna terminal falls within the third range (for example, 22 dBm or more), the electronic device 201 has a gain of the power amplifying circuit 230 of the electronic device 201.
  • the impedance characteristics of the antenna stage can be adjusted by using a code (G-AIT-Code) set to be the maximum.
  • G-AIT-Code code set to be the maximum.
  • the impedance of the antenna end of the electronic device 201 may be moved from the first point 501 on the Smith chart to a point included in the third area 505.
  • FIG. 6 is a graph illustrating current consumption of an electronic device according to power of a transmission signal in an electronic device according to various embodiments of the present disclosure.
  • the first consumption current 601 is an electronic device when the impedance characteristics of the antenna stage are adjusted so that the power efficiency of the power amplifying circuit (eg, the power amplifying circuit 230 of FIG. 2) is maximized. 201).
  • the second current consumption 603 may represent current consumed by the electronic device 201 when the impedance of the antenna terminal is matched to 50 ohms.
  • the third current consumption 605 uses a code set such that the gain of the power amplifying circuit (eg, the power amplifying circuit 230 of FIG. 2) of the electronic device (eg, the electronic device 201 of FIG. 2) is maximized.
  • the third current consumption 605 may be greater than the first current consumption 601 and the second current consumption 603.
  • Table 2 below is a data value summarizing the current consumption of the electronic device 201 according to the power of the transmission signal and the power of the transmission signal transmitted to the antenna terminal of the electronic device 201 based on the graph of FIG. 6.
  • the third current consumption 605 is a current gain of a minimum of 6mA to a maximum of 19mA compared to the first current consumption 601 when the power (Tx Power) of the transmission signal is 15 dBm to 23dBm It can be seen that this occurs, and the loss of Pout (the intensity of the output signal of the power amplifying circuit) is reduced by 0.2 dBm.
  • the power of the transmission signal of the electronic device belongs to a specific section, if the impedance characteristic of the antenna stage is adjusted to maximize the power efficiency of the power amplifying circuit 230, the Pout loss does not occur significantly, and the electronic The current consumption of the device 201 can be greatly reduced.
  • FIG. 7 is a flowchart illustrating an example of a method of controlling impedance of an antenna in an electronic device according to various embodiments of the present disclosure.
  • a processor of an electronic device may identify (or measure) the power of the transmission signal transmitted to the antenna (eg, antenna 260) terminal of the electronic device.
  • the processor 210 may receive information on the power of the transmission signal from the coupler 250 and identify the power of the transmission signal transmitted to the antenna 260 terminal based on the received information.
  • the coupler 250 may process information about the power of the transmission signal at each designated period so that the processor 210 can identify the power of the transmission signal transmitted to the antenna 260 stage at every specified period. 210).
  • the processor 210 may determine to which range the power of the transmission signal falls. For example, when the power of the transmission signal is less than the first threshold (eg, 10 dBm), the processor 210 may determine that the power of the transmission signal is included in the first range. For another example, when the power of the transmission signal is greater than or equal to the first threshold and less than the second threshold (eg, 22 dBm), the processor 210 may determine that the power of the transmission signal is included in the second range. . For another example, when the power of the transmission signal is greater than or equal to the second threshold, the processor 210 may determine that the power of the transmission signal is included in the third range.
  • the first threshold eg, 10 dBm
  • the processor 210 may determine that the power of the transmission signal is included in the first range. For another example, when the power of the transmission signal is greater than or equal to the first threshold and less than the second threshold (eg, 22 dBm), the processor 210 may determine that the power of the transmission signal is included in the second range.
  • the processor 210 performs operation 705 when the power of the transmission signal falls within the first range, performs operation 707 when the power of the transmission signal falls within the second range, and the power of the transmission signal falls within the third range. If it belongs, operation 709 may be performed.
  • the first range, the second range, or the third range may be set and updated (changed) based on a user input.
  • a range, a second range, or a third range may be set and changed based on information received from a server (eg, server 108).
  • the processor 210 may adjust the impedance characteristics of the antenna using a code based on the first table.
  • the processor 210 as shown in Figure 3, when the power of the transmission signal falls within the first range 302 (for example, a medium-sized electric field), the resonance of the antenna 260 is set to be optimized for reception (Rx)
  • a code corresponding to the power of the transmission signal is identified from the first table including the plurality of codes, and the tuner 240 of the electronic device 201 and the grounding part 270 of the electronic device 201 are identified based on the identified code
  • the processor 210 activates (or deactivates) at least one of the at least one capacitor or at least one inductor included in the tuner 240 based on the code identified from the first table, or the ground unit ( By changing the ground path of the antenna 260 through 270, the impedance characteristic of the antenna 260 can be adjusted.
  • the processor 210 may adjust the impedance characteristics of the antenna using a code based on the second table.
  • the processor 210 as shown in FIG. 3, when the power of the transmission signal falls within the second range 303 (eg, a heavy electric field), the power efficiency of the power amplifying circuit 230 of the electronic device 201
  • the second range 303 eg, a heavy electric field
  • the power efficiency of the power amplifying circuit 230 of the electronic device 201 By identifying the code corresponding to the power of the transmission signal from the second table including a plurality of codes set to the maximum, and controlling at least one of the tuner 240 and the ground unit 270 based on the identified code, The impedance characteristics of the antenna 260 can be adjusted.
  • the processor 210 may include at least one capacitor included in the tuner 240 based on a code identified from a second table including a plurality of codes set to maximize power efficiency of the power amplifying circuit 230.
  • the impedance characteristics of the antenna 260 may be adjusted by activating (or deactivating) at least one of the at least one inductor or changing the ground path of the antenna 260 through the ground unit 270.
  • the processor 210 may adjust the impedance characteristics of the antenna using a code based on the third table.
  • the processor 210 as shown in Figure 3, when the power of the transmission signal falls within the third range 305 (eg, weak electric field), the power amplifier circuit 230 is set so that the maximum gain
  • the impedance characteristic of the antenna 260 is adjusted. Can.
  • the processor 210 activates (or deactivates) at least one of the at least one capacitor or the at least one inductor included in the tuner 240 based on the code identified from the third table, or the ground unit ( By changing the ground path of the antenna 260 through 270, the impedance characteristic of the antenna 260 can be adjusted.
  • the electronic device 201 receives a table (eg, a first table, a second table, and a third table) including a plurality of codes for adjusting the impedance characteristics of the antenna from the server 108 It can be updated based on the information. For example, when a request for updating a plurality of codes included in the table is received from the user, the electronic device 201 receives information for updating the plurality of codes included in the table from the server 108, and the received information Multiple codes included in the table may be updated based on the. For another example, the electronic device 201 periodically determines whether information for updating a plurality of codes included in the table is stored in the server 108, and updates the plurality of codes included in the table. When it is identified that the information is stored in the server 108, the plurality of codes included in the table may be updated by receiving information for updating the plurality of codes included in the table from the server 108.
  • a table eg, a first table, a second table, and a third table
  • the electronic device 201 may change the impedance characteristic of the antenna 260 using a code set such that the resonance of the antenna 260 is optimized for reception (Rx) in the heavy field.
  • the impedance characteristic of the antenna 260 is changed using a code set so that the resonance of the antenna 260 is optimized for reception (Rx)
  • the code of the resonance of the antenna 260 is set to be optimized for transmission (Tx).
  • the current consumption of the electronic device 201 is not significantly changed compared to the case where the impedance characteristic of the antenna 260 is changed, and data throughput can be maximized.
  • the electronic device 201 may change the impedance characteristic of the antenna 260 by using a code set to maximize the power efficiency of the power amplifying circuit 230 of the electronic device 201 in the heavy electric field. Can.
  • the antenna 260 is used using a code set so that the gain of the power amplifying circuit 230 is maximized.
  • the power consumed in the electronic device 201 can be significantly reduced without generating a large amount of loss (Pout loss) of the output signal of the power amplifying circuit than when changing the impedance characteristic of.
  • the electronic device 201 changes an impedance characteristic of the antenna 260 using a code set to maximize the gain of the power amplifying circuit 230 in the weak electric field, thereby changing the antenna of the electronic device 201.
  • the radiation performance of 260 eg, total radiated power (TRP) or total isotropic sensitivity (TIS)
  • TRP total radiated power
  • TIS total isotropic sensitivity
  • the electronic device 201 in the state in which the power of the transmission signal belongs to the first range, the electronic device 201 has a first value (eg, 5 mA) in which the current consumption according to the output signal strength of the power amplifying circuit 230 is varied. If there is an abnormality difference, the first range may be adjusted so that the deviation of the current consumption is within the first value.
  • a first value eg, 5 mA
  • the electronic device 201 outputs the output signal strength of the power amplification circuit 230 and the output signal strength of the gain priority condition of the power amplification circuit 230 while the power of the transmission signal falls within the second range.
  • a difference is greater than or equal to a second value (eg, 0.5 dB)
  • the difference between the output signal strength of the power amplifying circuit 230 and the output signal strength of the gain priority condition of the power amplifying circuit 230 is within the second value.
  • the second range can be adjusted.
  • FIG. 8 is a flowchart illustrating another example of a method of controlling impedance of an antenna in an electronic device according to various embodiments of the present disclosure.
  • a processor of an electronic device may check an electric field state related to a transmission signal or a reception signal between the electronic device and an external electronic device.
  • the processor 210 receives information about power of a transmission signal or power of a reception signal from the coupler 250, and power or reception of a transmission signal transmitted to the antenna 260 stage based on the received information By identifying the power of the signal, it is possible to check an electric field state related to a transmission signal or a reception signal between the electronic device 201 and an external electronic device.
  • the processor 210 may determine whether the electric field state satisfies the first specified condition. For example, when the power of the transmission signal or the power of the reception signal is included in the first range (eg, less than 10 dBm), the processor 210 may determine that the electric field state satisfies the first specified condition. The processor 210 may perform operation 805 when the electric field state satisfies the first specified condition, and perform operation 807 when the electric field condition does not satisfy the first specified condition.
  • the first range eg, less than 10 dBm
  • the processor 210 uses the tuner 240 to resonate the impedance of the antenna 260 at a reception frequency corresponding to the received signal. Can be adjusted. For example, the processor 210 identifies and identifies a code corresponding to the transmission signal or the power of the received signal from a first table including a plurality of codes set such that resonance of the antenna 260 is optimized for reception (Rx). By controlling the tuner 240 based on the coded code, the impedance of the antenna 260 can be adjusted to the first impedance. The processor 210 may transmit a signal to an external electronic device or receive a signal from the external electronic device while the impedance of the antenna 260 is adjusted to the first impedance.
  • the processor 210 may determine whether the electric field condition satisfies the second specified condition. For example, when the power of the transmission signal or the power of the reception signal is included in the second range (for example, 10 dBm or more and less than 22 dBm), the processor 210 may determine that the electric field state satisfies the second specified condition. have. When the electric field state satisfies the second specified condition, the processor 210 performs operation 809, and when the electric field state does not satisfy the second specified condition (eg, when the third specified condition is satisfied), operation 811 You can do
  • the processor 210 uses the tuner 240 to reduce the impedance of the antenna 260 so that the efficiency of the power amplifying circuit 230 can be relatively high. It can be adjusted to 2 impedance.
  • the processor 210 identifies a code corresponding to the power of a transmission signal or a reception signal from a second table including a plurality of codes set such that the power efficiency of the power amplification circuit 230 is maximized, and the identified By controlling the tuner 240 based on the code, the impedance of the antenna 260 can be adjusted to the second impedance.
  • the processor 210 may transmit a signal to an external electronic device or receive a signal from the external electronic device while the impedance of the antenna 260 is adjusted to the second impedance.
  • the impedance of the antenna 260 using the tuner 240 can be adjusted to a third impedance so that the gain of the power amplifying circuit 230 can be relatively high.
  • the processor 210 identifies a code corresponding to the power of a transmission signal or a reception signal from a third table including a code set such that the gain of the power amplification circuit 230 is maximized, and based on the identified code
  • the impedance of the antenna 260 can be adjusted to the third impedance.
  • the processor 210 may transmit a signal to an external electronic device or receive a signal from the external electronic device while the impedance of the antenna 260 is adjusted to the third impedance.
  • the deviation of the consumption current according to the output signal strength of the power amplifying circuit 230 is the first value (eg, 5 mA).
  • the first specified condition may be adjusted so that the deviation of the current consumption is within a first value.
  • the electronic device 201 may adjust the first range to another value so that the deviation of the current consumption is within a first value.
  • the electronic device 201 when the electric field state satisfies the second specified condition, the electronic device 201 outputs the output signal strength of the power amplifying circuit 230 and the output priority signal of the gain amplifying condition of the power amplifying circuit 230.
  • a difference is greater than or equal to a second value (eg, 0.5 dB)
  • the difference between the output signal strength of the power amplifying circuit 230 and the output signal strength of the gain priority condition of the power amplifying circuit 230 is within the second value.
  • the second designated condition can be adjusted.
  • the electronic device 201 sets the second range so that the difference between the output signal strength of the power amplifying circuit 230 and the output signal strength of the gain priority condition of the power amplifying circuit 230 is within a second value. Can be adjusted.
  • the method of operating an impedance of an antenna (eg, the antenna 260 of FIG. 2) in an electronic device (eg, the electronic device 101 of FIG. 1 or the electronic device 201 of FIG. 2) is an external electronic device. And an operation of checking an electric field state related to a transmission signal or a reception signal between the electronic device, and when the electric field state satisfies a first specified condition, a tuner of the electronic device (for example, tuner 240 of FIG. 2).
  • the method of operating the impedance of the antenna is configured such that when the electric field state satisfies the third specified condition, the gain of the power amplifying circuit can be increased by using the tuner to increase the impedance of the antenna. It may further include an operation of adjusting the impedance to 3, and transmitting the transmission signal or receiving the reception signal in a state adjusted to the third impedance.
  • the operation of adjusting the impedance of the antenna to the first impedance or the second impedance controls the tuner such that at least a portion of at least one capacitor or at least one inductor included in the tuner is activated.
  • it may include an operation of adjusting the impedance of the antenna to the first impedance or the second impedance.
  • the operation of adjusting the impedance of the antenna to the first impedance or the second impedance may include controlling the ground of the electronic device so that the ground path of the antenna is changed, thereby reducing the impedance of the antenna. It may include the operation of adjusting to one impedance or the second impedance.
  • the operation may further include adjusting the first specified condition so that the deviation of the current consumption is within the first value.
  • the output signal strength of the power amplifier circuit and the gain priority condition of the power amplifier circuit are output when the electric field condition satisfies the second specified condition. Adjusting the second specified condition so that the difference between the output signal strength of the power amplifying circuit and the output signal strength of the gain priority condition of the power amplifying circuit is within the second value when a difference is greater than or equal to a second value. It may further include.
  • an impedance operating method of the antenna may include determining that the electric field state satisfies the first specified condition when the power of the transmission signal or the reception signal is included in a first range, the Determining that the electric field state satisfies the second specified condition when the power of the transmission signal or the reception signal is included in the second range, and the power of the transmission signal or the reception signal is included in the third range If it does, further comprising the step of determining that the electric field state satisfies the third specified condition, the minimum value of the second range is set to a value greater than the maximum value of the first range, the second range The maximum value of may be set to a value smaller than the minimum value of the third range.
  • the operation of adjusting the impedance of the antenna to the first impedance may include a plurality of resonances set to be optimized for reception (Rx) when the electric field state satisfies the first specified condition. Adjusting the impedance of the antenna to the first impedance by controlling the tuner based on the identified code and the operation of identifying a code corresponding to the power of the transmission signal or the received signal from a first table including a code Action.
  • the operation of adjusting the impedance of the antenna to the second impedance may include a plurality of codes set to maximize power efficiency of the power amplifying circuit when the electric field state satisfies the second specified condition. Adjusting the impedance of the antenna to the second impedance by controlling the tuner based on the identified code and the operation of identifying a code corresponding to the power of the transmission signal or the received signal from a second table including Action.
  • the operation of adjusting the impedance of the antenna to the third impedance includes a code set to maximize the gain of the power amplifying circuit when the electric field state satisfies the third specified condition. And identifying a code corresponding to the power of the transmission signal or the received signal from a third table and adjusting the impedance of the antenna to the third impedance by controlling the tuner based on the identified code.
  • An electronic device may be various types of devices.
  • the electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device.
  • a portable communication device e.g, a smart phone
  • a computer device e.g., a smart phone
  • a portable multimedia device e.g., a portable medical device
  • a camera e.g., a camera
  • a wearable device e.g., a smart bracelet
  • any (eg, first) component is “coupled” or “connected” to another (eg, second) component, with or without the term “functionally” or “communicatively” If mentioned, it means that any of the above components can be connected directly to the other components (eg by wire), wirelessly, or through a third component.
  • module may include units implemented in hardware, software, or firmware, and may be used interchangeably with terms such as, for example, logic, logic blocks, components, or circuits.
  • the module may be an integrally configured component or a minimum unit of the component or a part thereof performing one or more functions.
  • the module may be implemented in the form of an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • Various embodiments of the present disclosure may include one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101). It may be implemented as software (e.g., program 140) that includes.
  • a processor eg, processor 120
  • the one or more instructions may include code generated by a compiler or code executable by an interpreter.
  • the storage medium readable by the device may be provided in the form of a non-transitory storage medium.
  • a signal eg, electromagnetic waves
  • a method according to various embodiments disclosed in this document may be provided as being included in a computer program product.
  • Computer program products can be traded between sellers and buyers as products.
  • the computer program product is distributed in the form of a device-readable storage medium (eg compact disc read only memory (CD-ROM)), or through an application store (eg Play StoreTM) or two user devices ( For example, it can be distributed directly (e.g., downloaded or uploaded) between smartphones).
  • a portion of the computer program product may be stored at least temporarily on a storage medium readable by a device such as a memory of a manufacturer's server, an application store's server, or a relay server, or may be temporarily generated.
  • each component (eg, module or program) of the above-described components may include a singular or a plurality of entities.
  • one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added.
  • a plurality of components eg, modules or programs
  • the integrated component may perform one or more functions of each component of the plurality of components the same or similar to that performed by the corresponding component among the plurality of components prior to the integration. .
  • operations performed by a module, program, or other component may be executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order, or omitted. , Or one or more other actions can be added.

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  • Computer Networks & Wireless Communication (AREA)
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  • Electromagnetism (AREA)
  • Nonlinear Science (AREA)
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Abstract

Selon divers modes de réalisation, l'invention concerne un procédé de gestion d'une impédance d'une antenne et un dispositif électronique associé, le dispositif électronique comprenant : un circuit de communication comprenant une antenne, un syntoniseur connecté électriquement à l'antenne et capable d'ajuster une valeur d'adaptation d'impédance de l'antenne, un circuit d'amplification de puissance, un terminal de transmission capable de transmettre un signal de transmission amplifié par le circuit d'amplification de puissance à un dispositif électronique externe à l'aide de l'antenne, et un terminal de réception capable de recevoir un signal de réception en provenance du dispositif électronique externe à l'aide de l'antenne ; et au moins un processeur, l'au moins un processeur pouvant être configuré pour : identifier un état de champ électrique associé au signal de transmission ou au signal de réception entre le dispositif électronique externe et le dispositif électronique ; si l'état de champ électrique satisfait une première condition spécifiée, ajuster l'impédance de l'antenne à une première impédance de façon à résonner à une fréquence de réception correspondant au signal de réception, en utilisant le syntoniseur, et transmettre le signal de transmission ou recevoir le signal de réception, dans un état dans lequel l'impédance de l'antenne a été ajustée à la première impédance ; et si l'état de champ électrique satisfait une seconde condition spécifiée, ajuster l'impédance de l'antenne à une deuxième impédance en utilisant le syntoniseur de telle sorte que l'efficacité du circuit d'amplification de puissance devient relativement élevée, et transmettre le signal de transmission ou recevoir le signal de réception, dans un état dans lequel l'impédance de l'antenne a été ajustée à la deuxième impédance. D'autres modes de réalisation sont également possibles.
PCT/KR2020/001314 2019-01-29 2020-01-29 Procédé de gestion d'impédance d'antenne et dispositif électronique associé WO2020159208A1 (fr)

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