WO2023016261A1 - Appareil de traitement de signal et module d'adaptation d'impédance accordable - Google Patents

Appareil de traitement de signal et module d'adaptation d'impédance accordable Download PDF

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Publication number
WO2023016261A1
WO2023016261A1 PCT/CN2022/108241 CN2022108241W WO2023016261A1 WO 2023016261 A1 WO2023016261 A1 WO 2023016261A1 CN 2022108241 W CN2022108241 W CN 2022108241W WO 2023016261 A1 WO2023016261 A1 WO 2023016261A1
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configuration information
impedance
signal
module
radio frequency
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PCT/CN2022/108241
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English (en)
Chinese (zh)
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赵治磊
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华为技术有限公司
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/56—Modifications of input or output impedances, not otherwise provided for
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/213—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits

Definitions

  • the present application relates to the technical field of communications, and in particular to a signal processing device and an adjustable impedance matching module.
  • a signal processing device when a signal processing device receives or transmits a radio frequency signal, it usually needs to use a power amplifier (power amplifier, PA) to amplify the radio frequency signal, so the amplification performance of the power amplifier is very important.
  • the amplification performance of the power amplifier is usually affected by the output impedance.
  • the output of the power amplifier is usually connected to an impedance matching circuit, and the impedance of the impedance matching circuit matches the impedance of the power amplifier.
  • the impedance matching circuit in order to match the impedance of the impedance matching circuit with the impedance of the power amplifier, technicians adjust the impedance of the impedance matching circuit to match the power amplifier during the development stage. After the impedance matching circuit is determined, the impedance matching circuit is obtained by processing the components included in the impedance matching circuit.
  • the impedance of the impedance matching circuit may not match the impedance of the power amplifier, resulting in poor amplification performance of the power amplifier, which in turn leads to poor performance of the signal processing device.
  • the present application provides a signal processing device and an adjustable impedance matching module, which can enable the signal processing device to use an optimal impedance configuration, thereby enabling better performance of the signal processing device.
  • the present application provides a signal processing device, the signal processing device includes a configuration screening module, an adjustable impedance matching module and a radio frequency signal module; the configuration screening module is used to send at least one impedance configuration information to the adjustable impedance matching module , at least one impedance configuration information indicates the impedance configuration corresponding to the first working mode of the target channel; the radio frequency signal module is used to send a radio frequency signal to the adjustable impedance matching module; the adjustable impedance matching module is used to pair the impedance based on at least one impedance configuration information Impedance transformation is performed on the input radio frequency signal, and the impedance transformed radio frequency signal is sent to the configuration screening module; the configuration screening module is also used to determine target impedance configuration information corresponding to the first working mode based on each impedance transformed radio frequency signal.
  • the signal processing device includes an adjustable impedance matching module.
  • an adjustable impedance matching module For a working mode of a channel, by traversing the impedance configuration information, it can compensate for the influence of discrete components of the adjustable impedance matching module on impedance matching. , it can also make up for the influence of discrete components of the power amplifier of the radio frequency signal module on impedance matching, and can also make up for the difference in impedance matching of different working modes of different channels, so that the performance of the signal processor is better.
  • the signal processing device is a transmitter;
  • the screening module is configured to send at least one power configuration information of the radio frequency signal to the radio frequency signal module, and is used to match the adjustable impedance to the radio frequency signal module under each power configuration information.
  • the module sends at least one impedance configuration information, at least one power configuration information indicates the power configuration corresponding to the first working mode;
  • the radio frequency signal module is used to send a radio frequency signal to the adjustable impedance matching module based on at least one power configuration information;
  • the configuration screening module also It is used to determine target impedance configuration information and target power configuration information corresponding to the first working mode based on the impedance-transformed radio frequency signal corresponding to each configuration combination, each configuration combination includes a power configuration information and an impedance configuration information, different At least one of the power configuration information and the impedance configuration information included in the configuration combination is different.
  • the signal processing device when the signal processing device is a transmitter, there may be multiple power configuration information for a working mode of any channel.
  • the power configuration information and the impedance configuration information By adjusting the power configuration information and the impedance configuration information, the power configuration information and the impedance configuration information for optimizing the performance of the signal processing device are obtained, so that the performance of the signal processing device is the best in this working mode.
  • the configuration screening module is further configured to: determine the signal feature corresponding to each configuration combination based on the impedance-transformed radio frequency signal corresponding to each configuration combination, and the signal feature corresponding to each configuration combination is each Configure the signal characteristics of the impedance-transformed radio frequency signal corresponding to each configuration combination; determine target impedance configuration information and target power configuration information corresponding to the first working mode based on the signal characteristics corresponding to each configuration combination.
  • the target impedance configuration information and the target power configuration information can be accurately determined.
  • the configuration screening module includes a control module, an acquisition module, and a signal characteristic module;
  • the control module is configured to send at least one piece of power configuration information of the radio frequency signal to the radio frequency signal module, and is configured to set the power configuration information under each power configuration information , to send at least one impedance configuration information to the adjustable impedance matching module;
  • the acquisition module is used to receive the radio frequency signal sent by the adjustable impedance matching module, attenuate the radio frequency signal sent by the adjustable impedance matching module according to the target ratio, obtain the detection signal, and send the signal to the
  • the characteristic module sends the detection signal;
  • the signal characteristic module is used to determine the signal characteristics of the radio frequency signal sent by the adjustable impedance matching module based on the detection signal, and sends the signal characteristic to the control module;
  • the control module is also used to combine the corresponding Signal characteristics, determining target impedance configuration information and target power configuration information corresponding to the first working mode.
  • the configuration and screening module includes a control module, an acquisition module and a signal feature module, and the functions of the configuration and screening module are realized through cooperation of different modules.
  • the signal feature is one or more of sideband power, power, or error vector magnitude (error vector magnitude, EVM).
  • control module is configured to: determine the second power configuration information based on signal characteristics corresponding to multiple configuration combinations to which the first power configuration information belongs, and the first power configuration information indicates that the radio frequency signal module currently The power configuration used, the impedance configuration information included in multiple configuration combinations is different, and all belong to at least one impedance configuration information, the second power configuration information indicates that the power configuration corresponding to the first working mode is the closest to the currently used power configuration If the second power configuration information is not sent to the radio frequency signal module in the first working mode, then the second power configuration information is sent to the radio frequency signal module.
  • the control module when the control module adjusts the power configuration information each time, it determines the power configuration information to be selected next time based on the signal characteristics corresponding to the multiple configuration combinations to which the current first power configuration information belongs.
  • the power configuration information is sent only when it has not been sent to the radio frequency signal module. In this way, the current power configuration information is used to determine the power configuration information to be selected next, instead of blindly selecting the power configuration information. Therefore, the efficiency of determining the target power configuration information and the target impedance configuration information can be improved.
  • the signal features corresponding to each configuration combination are multiple signal features; if there is a signal feature that satisfies the corresponding threshold condition for each standard signal feature corresponding to multiple configuration combinations, then the second radio frequency signal The power is higher than the power of the first radio frequency signal; if there is no signal feature that satisfies the corresponding threshold condition for at least one standard signal feature corresponding to multiple configuration combinations, then the power of the second radio frequency signal is lower than the power of the first radio frequency signal; wherein , the up-to-standard signal feature is one or more of a variety of signal features, the up-to-standard signal feature is a signal feature that is required to meet the corresponding threshold condition among the multiple signal features; the threshold condition corresponds to the first working mode; the first radio frequency signal is a radio frequency The radio frequency signal generated by the signal module based on the first power configuration information, and the second radio frequency signal is a radio frequency signal generated by the radio frequency signal module based on the second power configuration information.
  • the power configuration information when the characteristics of the standard signal meet the corresponding threshold conditions, the power configuration information is selected as the power configuration information for increasing the power of the generated radio frequency signal, and when the characteristics of the standard signal do not meet the corresponding threshold conditions, the power configuration information is selected. Power configuration information for reducing the power at which radio frequency signals are generated. In this way, when the characteristics of the up-to-standard signal meet the corresponding threshold condition, the power of the generated radio frequency signal is increased to search for a higher power of the radio frequency signal. Moreover, since the characteristics of the qualified signal do not satisfy the threshold condition, generally the power of generating the radio frequency signal is relatively high, so reducing the power of generating the radio frequency signal can make the characteristic of the qualified signal meet the corresponding threshold condition.
  • control module is further configured to: if the signal feature corresponding to each configuration combination is a signal feature, select at least one impedance configuration information and at least one power configuration information such that a Impedance configuration information and power configuration information with optimal signal characteristics; the selected impedance configuration information and power configuration information are respectively determined as the target impedance configuration information and target power configuration information corresponding to the first working mode; if each configuration combines the corresponding signal If the feature is a variety of signal features, then based on the threshold condition corresponding to the first working mode of the up-to-standard signal feature among the multi-signal features, determine the target impedance configuration information and target power configuration information corresponding to the first working mode, and the up-to-standard signal feature is a variety of One or more of the signal features, the up-to-standard signal feature is a signal feature that is required to meet a corresponding threshold condition among multiple signal features.
  • target impedance configuration information and target power configuration information can be determined.
  • control module is further configured to: among the multiple configuration combinations to which the third power configuration information belongs, determine the first one that makes the signal characteristics of the standard meet the corresponding threshold conditions and that makes the characteristics of the sorted signals optimal.
  • Configuration combination the third power configuration information belongs to at least one power configuration information, the impedance configuration information included in each configuration combination to which the third power configuration information belongs is different, and all belong to at least one impedance configuration information, and the sorting signal features are multiple signal features Among the signal features except the standard signal features; in the first configuration combination corresponding to at least one power configuration information, determine the second configuration combination that makes the sorted signal features optimal; the impedance configuration information and power included in the second matching combination
  • the configuration information is respectively determined as target impedance configuration information and target power configuration information corresponding to the first working mode.
  • the control module first determines the optimal configuration combination under each power configuration information based on the characteristics of the standard signal and the sorting signal. Then, among the optimal configuration combinations corresponding to each power configuration information, a configuration combination that optimizes the characteristics of the sorted signals is determined, and target impedance configuration information and target power configuration information are obtained. In this way, the target impedance configuration information and the target power configuration information can be accurately and quickly determined.
  • the configuration screening module is also used to: store the first working mode of the target channel in correspondence with the target impedance configuration and target power configuration in the index table; when it is detected that the working mode is the first working mode of the target channel In the working mode, in the index table, determine the target impedance configuration information and target power configuration information corresponding to the first working mode; send the target impedance configuration information to the adjustable impedance matching module, and instruct the adjustable impedance matching module to adjust the impedance configuration to the target Impedance configuration, sending target power configuration information to the radio frequency signal module, instructing the radio frequency signal module to adjust the power configuration to the target power configuration.
  • the performance of the signal processing device can be optimized by using the target impedance configuration information and the target power configuration information.
  • the configuration screening module is further configured to: obtain the first signal feature corresponding to the current target power configuration information and target impedance configuration information; if the variation between the first signal feature and the target signal feature exceeds the target threshold , adjust at least one parameter of the target impedance configuration information to obtain the first impedance configuration information, the first impedance configuration information indicates the current impedance configuration that makes the signal characteristics of the radio frequency signal sent by the adjustable impedance matching module optimal, and the target signal characteristics It is the signal feature corresponding to the target power configuration information and the target impedance configuration information; the adjustable impedance matching module is controlled to adjust the impedance configuration to the impedance configuration indicated by the first impedance configuration information.
  • the adjustable impedance matching module includes at least one of an adjustable capacitance component and an adjustable inductance component, and an adjustment component; the adjustment component is configured to control the adjustable capacitance component based on at least one piece of impedance configuration information and at least one of the inductance adjustable components to obtain the impedance corresponding to each impedance configuration information.
  • the capacitance adjustable component includes at least one capacitor array, a first switch connected to each capacitor array; the inductance adjustable component includes at least one inductor array, and a second switch connected to each inductor array .
  • the configuration screening module is further configured to determine that the current signal processing device is in an initialization phase or has received an impedance adjustment instruction before sending at least one piece of impedance configuration information to the adjustable impedance matching module. In this way, the timing of determining the target impedance configuration information can be flexibly configured.
  • the present application provides an adjustable impedance matching module, which is the adjustable impedance matching module of the first aspect;
  • the adjustable impedance matching module includes an adjustable capacitance component and an adjustable inductance component At least one, an adjustment component; the adjustment component is used to control at least one of the capacitance adjustable component and the inductance adjustable component to obtain the impedance corresponding to each impedance configuration information based on at least one impedance configuration information sent by the configuration screening module.
  • the adjustable capacitance component includes at least one capacitor array, a first switch connected to each capacitor array, and the adjustable inductance component includes at least one inductor array, and a second switch connected to each inductor array .
  • Fig. 1 is a schematic structural diagram of a signal processing device provided by an exemplary embodiment of the present application
  • Fig. 2 is a schematic structural diagram of a signal processing device provided by an exemplary embodiment of the present application
  • Fig. 3 is a schematic structural diagram of a signal processing device provided by an exemplary embodiment of the present application.
  • Fig. 4 is a schematic flowchart of determining impedance configuration information and power configuration information provided by an exemplary embodiment of the present application
  • Fig. 5 is a schematic structural diagram of a signal processing device provided by an exemplary embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of a signal processing device provided by an exemplary embodiment of the present application.
  • Fig. 7 is a schematic structural diagram of a signal processing device provided by an exemplary embodiment of the present application.
  • Fig. 8 is a schematic flowchart of determining impedance configuration information and power configuration information provided by an exemplary embodiment of the present application
  • Fig. 9 is a schematic flowchart of determining impedance configuration information and power configuration information provided by an exemplary embodiment of the present application.
  • Fig. 10 is a schematic flowchart of automatically adjusting impedance configuration information provided by an exemplary embodiment of the present application.
  • Fig. 11 is a schematic structural diagram of an adjustable impedance matching module provided by an exemplary embodiment of the present application.
  • Fig. 12 is a schematic structural diagram of an adjustable impedance matching module provided by an exemplary embodiment of the present application.
  • Fig. 13 is a schematic structural diagram of an adjustable impedance matching module provided by an exemplary embodiment of the present application.
  • Fig. 14 is a schematic structural diagram of an adjustable impedance matching module provided by an exemplary embodiment of the present application.
  • Configuration screening module 12. Adjustable impedance matching module; 13. Radio frequency signal module; 111. Control module; 112. Acquisition module; 113. Signal characteristic module; 123. Adjustment component; 124. Transformer; 1211. Capacitor array; 1212. First switch; 1221. Inductor array; 1222. Second switch.
  • Impedance in a circuit with resistance, inductance and capacitance, indicates the amount of the circuit's ability to hinder the passage of current. Impedance is a complex number in ohms ( ⁇ ).
  • Impedance matching refers to a working state in which the load impedance matches the internal impedance of the signal source to obtain the maximum power output.
  • the characteristic impedance can also be called the characteristic impedance.
  • an electric field will be formed between the transmission line and the reference plane (the reference plane can be the ground plane, etc.), and there will be a magnetic field around the transmission line. If the electric field and magnetic field are alternating, it will form a barrier that hinders the progress of the radio frequency signal. voltage and current. In this way, each point on the transmission line can be equivalent to an impedance, which can be called the characteristic impedance.
  • the characteristic impedance can also be understood as the resistance of the transmission line to the energy of the radio frequency signal transmitted on the transmission line.
  • a signal processing device is often involved in a communication system, and the signal processing device may be a transmitter or a receiver.
  • a transmitter can also be called a transmitting component; a receiver can also be called a receiving component.
  • a signal processing device receives a radio frequency signal or transmits a radio frequency signal, it usually needs to use a power amplifier to amplify the radio frequency signal, so the amplification performance of the power amplifier is very important.
  • the signal processing device is a transmitter, when transmitting radio frequency signals, it is usually necessary to use a power amplifier to amplify the power of the radio frequency signals, so that the power of the radio frequency signals radiated by the antenna is relatively high and the radiation range is wide.
  • the amplification performance of the power amplifier of the signal processing device is usually affected by the output impedance.
  • the output of the power amplifier is usually connected to an impedance matching circuit.
  • the impedance of the impedance matching circuit and the impedance of the power amplifier meet the impedance matching.
  • the impedance matching circuit in order to match the impedance of the impedance matching circuit with the impedance of the power amplifier, technicians adjust the impedance of the impedance matching circuit to match the power amplifier during the development stage. After the impedance matching circuit is determined, the impedance matching circuit is obtained by processing the components included in the impedance matching circuit.
  • the printed circuit board (PCB) boards of different manufacturers or different batches of PCB boards have different characteristics, so it is also possible that the impedance of the processed impedance matching circuit may not match the impedance of the power amplifier.
  • the signal processing device includes an adjustable impedance matching module 12, and the adjustable impedance matching module 12 is a module whose impedance can be adjusted.
  • the impedance is adjusted by traversing multiple impedance configuration information, and the optimal impedance configuration information is selected. Therefore, for questions 1 and 2, after the impedance matching circuit is processed, even if there are deviations in the components of the impedance matching circuit, or there are differences in the characteristics of the PCB board, the impedance configuration information can be adjusted to make the impedance of the power amplifier Impedance matching with impedance matching circuit. For problem 3, even if the power amplifier itself has a deviation, the impedance of the power amplifier can be matched with the impedance of the impedance matching circuit by adjusting the impedance configuration information.
  • the signal processing device may be a device with a wireless transceiver function, and the device functions as a transmitter or a receiver.
  • the signal processing device may be a terminal device that can access the network, a mobile phone, a tablet computer, a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal, an augmented reality (augmented reality, AR) terminal, a router, Base station, optical modem with routing function, wireless broadband (wireless-fidelity, WIFI) equipment, etc.
  • the principle adopted is the principle of the embodiment of the present application, but for the impedance configuration information and power configuration information, different devices have different adjustment ranges and adjustment ranges .
  • the adjustment range when the signal processing device is a mobile phone is smaller than the adjustment range when the signal processing device is a base station.
  • the signal processing device may also be a transmitter, a receiver, etc. in a device with a wireless transceiver function.
  • a device with wireless transceiver function is a terminal, and the terminal may include the transmitter in this application instead of the receiver in this application, or the terminal may include the receiver in this application instead of the receiver in this application.
  • the transmitter, or the terminal may include both the transmitter and the receiver in this application.
  • the signal processing device can work on multiple channels, and the channels can also be called channels or frequency bands. Different channels have different frequency bands. Each channel includes at least one mode of operation.
  • the working mode can also be referred to as a modulation and coding strategy.
  • the channel is the A frequency band, and the working mode includes modulation and coding scheme 0 (modulation and coding scheme0, MCS0) to MCS11.
  • the optimal impedance configuration information of each working mode of each channel can be obtained.
  • the optimal impedance configuration information can match the impedance of the adjustable impedance matching module 12 with the impedance of the power amplifier of the signal processing device. It can also be understood as: when the signal processing device is a transmitter, for a certain working mode of a channel, in this working mode, the signal processing device can use the optimal impedance configuration information corresponding to the working mode to maximize the output power . In the case where the signal processing device is a receiver, for a certain working mode of a channel, in this working mode, the signal processing device can use the optimal impedance configuration information corresponding to the working mode to maximize the received power.
  • the above impedance configuration information is used to configure the impedance of the adjustable impedance matching module 12 .
  • the adjustable impedance matching module 12 includes a capacitor and an inductor, and the impedance configuration information includes a value of at least one of the capacitor and the resistor.
  • the initialization stage refers to the start-up stage, which may be the start-up stage of the processing signal processing device, or the start-up stage of the user after the processing is completed.
  • the developer can input impedance adjustment instructions to the signal processing device when debugging the signal processing device.
  • the user inputs an impedance adjustment instruction to the signal processing device.
  • the update period may be a preset period, such as one month.
  • the channel and working mode may also be indicated in the impedance adjustment command, which is used to instruct the signal processing device to determine the optimal impedance configuration information of the working mode of the channel.
  • the target channel is any kind of channel
  • the first working mode is any kind of working mode in the target channel.
  • an embodiment of the present application provides a signal processing device, which includes a configuration screening module 11 , an adjustable impedance matching module 12 and a radio frequency signal module 13 .
  • the configuration screening module 11 is connected with the adjustable impedance matching module 12 ; the adjustable impedance matching module 12 is connected with the radio frequency signal module 13 .
  • the connection may be any communication connection, such as implemented by means of wires and the like.
  • a plurality of impedance configuration information corresponding to each working mode of each channel is configured in the signal processing device.
  • the configuration screening module 11 obtains a plurality of impedance configuration information corresponding to the first working mode, and the configuration screening module 11 sends at least one impedance configuration information to the adjustable impedance matching module 12, and at least one impedance configuration information indicates the impedance corresponding to the first working mode of the target channel. impedance configuration.
  • the radio frequency signal module 13 generates radio frequency signals.
  • the radio frequency signal module 13 sends the radio frequency signal to the adjustable impedance matching module 12 .
  • the adjustable impedance matching module 12 is a module capable of adjusting impedance configuration information to achieve impedance adjustment. After receiving the radio frequency signal sent by the radio frequency signal module 13, the adjustable impedance matching module 12 can use the current impedance configuration information to perform impedance transformation on the radio frequency signal to obtain an impedance transformed radio frequency signal.
  • the radio frequency signal after impedance transformation may also be referred to as the radio frequency signal of the target characteristic impedance, and the target characteristic impedance is the impedance obtained by the adjustable impedance matching module 12 using the current impedance configuration information.
  • a radio frequency system (the signal processing device is a part of the radio frequency system) adopts 50 ohms as the target characteristic impedance of system design, and some other radio frequency systems adopt 75 ohms or other impedance values.
  • the adjustable impedance matching module 12 sends the radio frequency signal after impedance transformation to the configuration screening module 11 .
  • the configuration screening module 11 can determine the optimal impedance configuration information (which can be called the target impedance configuration information) corresponding to the first working mode based on the impedance-transformed radio frequency signal corresponding to each impedance configuration information, and output each impedance configuration information The corresponding RF signal after impedance transformation. In this way, for the first working mode of the target channel, optimal impedance configuration information can be obtained. Any working mode of each channel can be processed in this way, and the corresponding optimal impedance configuration information can be obtained.
  • the target impedance configuration information which can be called the target impedance configuration information
  • the configuration screening module 11 may obtain a signal feature corresponding to each impedance configuration information based on the impedance-transformed radio frequency signal corresponding to each impedance configuration information, and the signal feature is a signal feature of the impedance-transformed radio frequency signal.
  • the configuration screening module 11 may use the signal characteristics corresponding to each impedance configuration information to determine target impedance configuration information that optimizes the signal characteristics. This process is similar to the process of determining the optimal impedance configuration information and the optimal power configuration information in the following text.
  • the configuration screening module 11 sends at least one piece of impedance configuration information to the adjustable impedance matching module 12 .
  • the configuration screening module 11 sends a plurality of impedance configuration information to the adjustable impedance matching module 12, and each impedance configuration information indicates an impedance configuration.
  • the adjustable impedance matching module 12 performs impedance transformation on the radio frequency signal according to the received impedance configuration information each time.
  • the configuration screening module 11 sends the next impedance configuration information to the adjustable impedance matching module 12 after receiving the radio frequency signal corresponding to the current impedance configuration information.
  • one piece of impedance configuration information indicates multiple impedance configurations.
  • the adjustable impedance matching module 12 switches multiple impedance configurations according to a preset switching sequence. In this way, the adjustable impedance matching module 12 uses each impedance configuration to perform impedance transformation on the radio frequency signal.
  • Fig. 2 shows a schematic diagram in which the signal processing device is a transmitter.
  • the radio frequency signal module 13 includes a modulation sending unit and a power amplifier.
  • the modulation and sending unit includes digital baseband, analog baseband and radio frequency unit, etc.
  • the digital baseband is used to convert the transmitted data into a digital baseband signal;
  • the analog baseband is used to convert the digital baseband signal into an analog baseband signal;
  • the radio frequency unit is used to modulate the analog baseband signal onto the transmitting carrier to obtain a radio frequency signal.
  • the modulation sending unit sends the generated radio frequency signal to the power amplifier, and the power amplifier is used to amplify the power of the radio frequency signal.
  • the signal processing device when the signal processing device is a transmitter, there may be multiple power configuration information in any working mode of each channel, and each power configuration information makes the power of the radio frequency signal generated by the radio frequency signal module 13 different.
  • the power configuration information of the radio frequency signal module 13 may also be adjusted synchronously, so that the radio frequency signal module 13 obtains optimal power configuration information.
  • the configuration screening module 11 is connected to the radio frequency signal module 13 .
  • the connection can also be realized by wires.
  • the signal processing device performs processing for determining optimal impedance configuration information and optimal power configuration information.
  • the configuration screening module 11 can send at least one power configuration information of the radio frequency signal to the radio frequency signal module 13, the at least one power configuration information indicates the power configuration corresponding to the first working mode, and the power configuration is the power configuration of the radio frequency signal. And the configuration screening module 11 sends at least one piece of impedance configuration information to the adjustable impedance matching module 12 under each power configuration information sent. In this way, the radio frequency signal module 13 sends a radio frequency signal to the adjustable impedance matching module 12 based on each received power configuration information.
  • the RF signal after impedance transformation sent by the adjustable impedance matching module 12 to the configuration screening module 11 each time is based on a power configuration information and an impedance configuration information, so the configuration screening module 11 can receive a power configuration information each time
  • the impedance-transformed radio frequency signal corresponding to one piece of impedance configuration information, and subsequently a piece of power configuration information and a piece of impedance configuration information are referred to as a configuration combination.
  • the configuration screening module 11 uses the impedance-transformed radio frequency signal corresponding to each configuration combination to determine target impedance configuration information and target power configuration information corresponding to the first working mode.
  • the target power configuration information can also be called optimal power configuration information.
  • the target impedance configuration information and the target power configuration information can make the impedance of the adjustable impedance matching module 12 match the impedance of the power amplifier.
  • Each power configuration information indicates a power configuration.
  • FIG. 4 shows a flowchart of determining optimal impedance configuration information and optimal power configuration information by a signal processing device. The process is as follows:
  • the configuration screening module 11 may select the first working mode of the target channel.
  • Step 402 the configuration screening module 11 sends the currently selected power configuration information to the radio frequency signal module 13 .
  • the power configuration information is selected for the first time, default power configuration information may be selected, and the power configuration indicated by the default power configuration information belongs to the power configuration corresponding to the first working mode, and is set as the first traversed power configuration information.
  • the configuration screening module 11 sends at least one piece of impedance configuration information to the adjustable impedance matching module 12 .
  • the configuration screening module 11 records radio frequency signals corresponding to multiple configuration combinations to which the currently selected power configuration information belongs, and the radio frequency signals are radio frequency signals after impedance transformation.
  • Step 403 the configuration screening module 11 uses the radio frequency signals corresponding to the plurality of configuration combinations to determine the optimal impedance configuration information corresponding to the currently selected power configuration information.
  • step 404 the configuration screening module 11 judges whether there is still power configuration information that needs to be traversed but has not been traversed.
  • Step 405 if there is power configuration information that has not been traversed, return to step 402.
  • Step 406 if there is no power configuration information that has not been traversed, determine the target impedance configuration information and the target power configuration information in the power configuration information selected each time and the optimal impedance configuration information corresponding to the power configuration information selected each time .
  • the target impedance configuration information and target power configuration information corresponding to the first working mode of the target channel can be obtained.
  • the determination process of the optimal power configuration information and the optimal impedance configuration information of other working modes of the target channel, and the determination process of the optimal power configuration information and the optimal impedance configuration information corresponding to the working modes of other channels can be referred to in Figure 4. process.
  • the impedance configuration information is traversed.
  • the impedance configuration information may also be fixed each time, and the power configuration information is traversed, which is not limited in this embodiment of the application.
  • step 403 every time the power configuration information is traversed, it is determined that the power configuration information corresponds to the optimal impedance configuration information (that is, step 403 is executed).
  • step 403 may not be executed, but after traversing all the power configuration information, it is determined that the selected power configuration information corresponds to the optimal impedance configuration information, and then the target impedance configuration information and target power configuration information are determined. That is, move step 403 to step 406 .
  • the configuration screening module 11 can determine target impedance configuration information and target power configuration information based on the signal characteristics of the radio frequency signal, and the processing process is:
  • the configuration screening module 11 uses the impedance-transformed radio frequency signal corresponding to each configuration combination to determine the signal feature corresponding to each configuration combination, and the signal feature corresponding to each configuration combination is the impedance-transformed radio frequency signal corresponding to each configuration combination. signal characteristics. Then the configuration screening module 11 uses the signal characteristics corresponding to each configuration combination to determine target impedance configuration information and target power configuration information corresponding to the first working mode.
  • the signal characteristic is one or more of sideband power, power or EVM.
  • the sideband power is the power of the spectrum on both sides of the carrier, and the spectrum on both sides of the carrier is called the sideband.
  • EVM reflects modulation accuracy.
  • FIG. 5 shows a structure of the configuration screening module 11 , called structure 1 .
  • the configuration screening module 11 includes a control module 111 and a collection module 112 .
  • the control module 111 is connected to the acquisition module 112 ; the control module 111 is connected to the radio frequency signal module 13 ; the control module 111 is connected to the adjustable impedance matching module 12 ; the acquisition module 112 is connected to the adjustable impedance matching module 12 .
  • the connection may be any communication connection, such as implemented by means of wires and the like.
  • the control module 111 stores the impedance configuration information in a position read by the adjustable impedance matching module 12, and the adjustable impedance matching module 12 reads the impedance configuration information at the position.
  • the control module 111 sends the impedance configuration information to the adjustable impedance matching module 12 through wires.
  • the control module 111 may be a central processing unit (central processing unit, CPU), a digital signal processing (digital signal processing, DSP), a chip, a graphics processing unit (graphics processing unit, GPU) and the like. Of course, the control module 111 may also be implemented by pure software, which is not limited in this embodiment of the present application.
  • the acquisition module 112 may be an attenuator, a circulator, a coupler, or the like.
  • the control module 111 sends at least one piece of power configuration information of the radio frequency signal to the radio frequency signal module 13 , and sends at least one piece of impedance configuration information to the adjustable impedance matching module 12 under each sent power configuration information.
  • the radio frequency signal module 13 can output a radio frequency signal based on each received power configuration information.
  • the adjustable impedance matching module 12 performs impedance transformation on the radio frequency signal based on at least one piece of received impedance configuration information to obtain an impedance transformed radio frequency signal.
  • the adjustable impedance matching module 12 sends the RF signal after each impedance transformation to the acquisition module 112 .
  • the acquisition module 112 After receiving the radio frequency signal sent by the adjustable impedance matching module 12, the acquisition module 112 attenuates the radio frequency signal according to a target ratio to obtain a detection signal.
  • the acquisition module 112 sends a detection signal to the control module 111 .
  • the acquisition module 112 is also connected to the antenna, and the acquisition module 112 sends the unattenuated part of the received radio frequency signal after impedance transformation to the antenna, so that the radio frequency signal can continue to be transmitted.
  • the target ratio can be set in advance. In order not to affect the normal transmission of the radio frequency signal, the target ratio is relatively small, for example, it can be 3/1000 or the like.
  • the control module 111 may determine a configuration combination corresponding to the received detection signals based on the order in which the detection signals are received. For example, the control module 111 sends the first power configuration information to the radio frequency signal module 13 , and sends the first impedance configuration information, the second impedance configuration information and the third impedance configuration information to the adjustable impedance matching module 12 in sequence.
  • the first detection signal received by the control module 111 corresponds to the first impedance configuration information
  • the next detection signal received by the control module 111 corresponds to the second impedance configuration information
  • the last detection signal received by the control module 111 corresponds to the third impedance configuration information.
  • the control module 111 uses the detection signal corresponding to each configuration combination to determine the signal feature corresponding to each configuration combination, and the signal feature corresponding to each configuration combination is the signal feature of the impedance-transformed radio frequency signal corresponding to each configuration combination. Then the control module 111 determines target impedance configuration information and target power configuration information corresponding to the first working mode based on the signal characteristics corresponding to each configuration combination.
  • FIG. 6 shows another configuration of the configuration screening module 11 , which is referred to as configuration 2 .
  • the configuration and screening module 11 includes a control module 111 , an acquisition module 112 and a signal feature module 113 .
  • the control module 111 is connected with the radio frequency signal module 13; the control module 111 is connected with the adjustable impedance matching module 12; the control module 111 is connected with the signal characteristic module 113; the acquisition module 112 is connected with the signal characteristic module 113; the acquisition module 112 is matched with the adjustable impedance Module 12 is connected.
  • the control module 111 may be a processor such as a CPU.
  • the acquisition module 112 may be an attenuator, a circulator, a coupler, or the like.
  • the control module 111 sends at least one power configuration information of the radio frequency signal to the radio frequency signal module 13 , and sends at least one impedance configuration information of the impedance to the adjustable impedance matching module 12 under each power configuration information sent.
  • the radio frequency signal module 13 can output a radio frequency signal based on each received impedance configuration information.
  • the adjustable impedance matching module 12 performs impedance transformation on the radio frequency signal based on each received impedance configuration information to obtain the impedance transformed radio frequency signal.
  • the adjustable impedance matching module 12 sends the RF signal after each impedance transformation to the acquisition module 112 .
  • the acquisition module 112 After receiving the radio frequency signal sent by the adjustable impedance matching module 12, the acquisition module 112 attenuates the radio frequency signal according to a target ratio to obtain a detection signal.
  • the collection module 112 sends the detection signal to the signal feature module 113 .
  • the acquisition module 112 is also connected to the antenna, and the acquisition module 112 sends the unattenuated part of the received radio frequency signal after impedance transformation to the antenna, so that the radio frequency signal can continue to be transmitted.
  • the target ratio can be set in advance. In order not to affect the normal transmission of the radio frequency signal, the target ratio is relatively small, for example, it can be 3/1000 or the like.
  • the signal feature module 113 determines the signal feature of the impedance-transformed radio frequency signal corresponding to the detection signal.
  • the signal characteristic module 113 then sends the signal characteristic to the control module 111 .
  • the control module 111 determines the configuration combination to which each received signal feature belongs. For example, the control module 111 sends the first power configuration information to the radio frequency signal module 13 , and sends the first impedance configuration information, the second impedance configuration information and the third impedance configuration information to the adjustable impedance matching module 12 in sequence.
  • the first signal feature received by the control module 111 corresponds to the first impedance configuration information
  • the next signal feature received by the control module 111 corresponds to the second impedance configuration information
  • the last signal feature received by the control module 111 corresponds to the third impedance configuration information.
  • the control module 111 determines target impedance configuration information and target power configuration information corresponding to the first working mode based on signal characteristics corresponding to each configuration combination.
  • control module 111 is connected to the acquisition module 112 .
  • the control module 111 when the control module 111 starts to determine the target impedance configuration information and target power configuration information, the control module 111 sends a collection instruction to the collection module 112, instructing the collection module 112 to collect detection signals.
  • the control module 111 finishes determining the target impedance configuration information and the target power configuration information, the control module 111 sends a stop collection instruction to the collection module 112, instructing the collection module 112 to stop collecting detection signals.
  • the acquisition module 112 works, which not only reduces power consumption, but also makes the power of the radio frequency signal output by the signal processing device relatively high, because the acquisition module 112 does not attenuate the received signal. radio frequency signal.
  • the way to determine the sideband power is: amplifying the detection signal, and converting the amplified detection signal into a time-domain signal.
  • the time domain signal is modulated to baseband to obtain a baseband signal.
  • the baseband signal is converted into a digital signal through an analog-to-digital converter. Then perform fast Fourier Transformation (FFT) on the digital signal to obtain the FFT result, and calculate the sideband power based on the FFT result.
  • FFT fast Fourier Transformation
  • the way to determine the power is: determine the power of the detection signal, use the power of the detection signal and the attenuation target ratio of the acquisition module 112 to determine the power of the radio frequency signal output by the acquisition module 112 to the antenna, and set The power of the detection signal is added to the power of the radio frequency signal output to the antenna by the acquisition module 112 to obtain the power of the radio frequency signal corresponding to the detection signal after impedance transformation.
  • the power of the detection signal may also be directly determined as the power of the impedance-transformed radio frequency signal corresponding to the detection signal.
  • the manner of determining the EVM may be to demodulate the detection signal to obtain the demodulated actual signal.
  • the magnitude of a new vector is obtained by subtracting the ideal signal vector from the demodulated actual signal vector. Calculate the ratio of the magnitude of this new vector to the magnitude of the ideal signal vector, this ratio is the EVM.
  • the ideal signal vector can be obtained from the radio frequency signal module 13, or can be obtained by averaging multiple demodulated actual signal vectors.
  • the control module 111 determines the signal characteristics and can be recorded. During recording, the control module 111 stores the signal features in memory, or the control module 111 stores the signal features in the memory of the signal processing device, or the control module 111 stores the signal features in an accessible storage medium. Exemplarily, Table 1 provides a way of recording signal characteristics.
  • each signal feature is determined using a sub-module respectively.
  • signal characteristic is EVM and power
  • signal characteristic module 113 comprises signal characteristic calculation submodule 1 and signal characteristic calculation submodule 2
  • signal characteristic calculation submodule 1 is used for determining EVM
  • signal characteristic calculation submodule Module 2 is used to determine the power.
  • FIG. 7 shows that the signal feature module 113 includes various signal feature calculation sub-modules.
  • the control module 111 is connected to the modulation and sending unit.
  • the control module 111 sends at least one power configuration information of the radio frequency signal to the modulating and sending unit, so as to control the power of the radio frequency signal output by the modulating and sending unit, and then control the power of the radio frequency signal output by the radio frequency signal module 13 .
  • the control module 111 in order to obtain target impedance configuration information and target power configuration information corresponding to the first working mode more quickly, sends one piece of power configuration information to the radio frequency signal module 13 each time. Specifically, the control module 111 sends a piece of power configuration information to the radio frequency signal module 13 for the ith time, and after sending the power configuration information, iterates through a plurality of impedance configuration information (that is, the control module 111 sends one piece of impedance configuration information to the adjustable impedance matching module 12 each time). impedance configuration information), and the value of i is a positive integer.
  • the power configuration information sent by the control module 111 to the radio frequency signal module 13 for the i+1 time is determined based on the power configuration information sent for the i time, and the determination process is as follows.
  • the control module 111 determines signal characteristics corresponding to multiple configuration combinations to which the first power configuration information belongs.
  • the multiple configuration combinations include different impedance configuration information and all belong to multiple impedance configuration information corresponding to the first working mode. It can also be understood as: the power configuration information included in each configuration combination among multiple configuration combinations is the first power configuration information, the impedance configuration information included in each configuration combination is different, and the impedance configuration information included in each configuration combination forms the first power configuration information.
  • the control module 111 determines the second power configuration information closest to the first power configuration information by using the signal characteristics corresponding to the multiple configuration combinations.
  • the multiple signal features include standard signal features
  • the standard signal features are signal features that are required to meet the corresponding threshold conditions among the multiple signal features
  • the standard The signal feature is one or more of the various signal features.
  • various signal characteristics include power and EVM, which is an on-spec signal characteristic.
  • the control module 111 judges whether each standard signal feature corresponding to multiple configuration combinations has a signal feature that satisfies the corresponding threshold condition, and the multiple configuration combinations are the configuration combinations to which the first power configuration information belongs.
  • the power of the first radio frequency signal is lower than the power of the second radio frequency signal, and the first radio frequency signal is the radio frequency signal module 13 based on the first radio frequency signal.
  • the radio frequency signal generated by the power configuration information; the second radio frequency signal is the radio frequency signal generated by the radio frequency signal module 13 based on the second power configuration information, and can also be considered as: the first radio frequency signal is the radio frequency signal generated by the modulation and sending unit based on the first power configuration information signal; the second radio frequency signal is a radio frequency signal generated by the modulating and sending unit based on the second power configuration information.
  • the second power configuration information is the power configuration information that makes the power of the radio frequency signal higher than the power of the first radio frequency signal and is closest to the power of the first radio frequency signal among all the power configuration information. If there is no signal feature satisfying the corresponding threshold condition in at least one standard signal feature corresponding to multiple configuration combinations, the power of the first radio frequency signal is higher than the power of the second radio frequency signal.
  • the second power configuration information is the power configuration information that makes the power of the radio frequency signal lower than the power of the first radio frequency signal and is closest to the power of the first radio frequency signal among all the power configuration information.
  • each standard-reaching signal feature corresponds to a threshold condition.
  • the threshold condition corresponding to the EVM is lower than the target EVM value; the threshold condition corresponding to the power is higher than the target power value, and the threshold condition corresponding to the sideband power is lower than the target sideband power value.
  • the threshold conditions corresponding to each standard signal feature may be different in different working modes of the same channel, and the threshold conditions corresponding to each standard signal feature may also be different in different working modes of different channels.
  • the control module 111 determines the second power configuration information, in the first working mode, the control module 111 judges whether the second power configuration information has been sent to the radio frequency signal module 13 . If the second power configuration information has not been sent, the control module 111 sends the second power configuration information to the radio frequency signal module 13; if the second power configuration information has been sent, it means that the power configuration information has also been traversed.
  • the power of the radio frequency signal generated by the radio frequency signal module 13 will not be reduced; when the standard signal feature does not meet the corresponding threshold condition, it will not increase
  • the high radio frequency signal module 13 generates the power of the radio frequency signal, so there is no need to traverse all the power configuration information, thereby improving the efficiency of determining the target impedance configuration information and the target power configuration information.
  • the reason why the power of the radio frequency signal generated by the radio frequency signal module 13 will not be increased is that the signal feature does not meet the corresponding threshold condition generally because the radio frequency signal generated by the radio frequency signal module 13 The power of the radio frequency signal is too high, so reducing the power of the radio frequency signal generated by the radio frequency signal module 13 can make the signal feature meet the corresponding threshold condition.
  • the power configuration information can also be adjusted using the above method.
  • the signal feature is the standard signal feature.
  • the control module 111 selects at least one impedance configuration information and at least one power configuration information so that the Impedance configuration information and power configuration information with optimal signal characteristics.
  • the control module 111 may select the impedance configuration information and the power configuration information that make the one signal characteristic optimal, and the signal characteristic satisfies a corresponding threshold condition.
  • the control module 111 determines the selected impedance configuration information and power configuration information as target impedance configuration information and target power configuration information corresponding to the first working mode, respectively.
  • the multiple signal features corresponding to each configuration combination are multiple signal features
  • the multiple signal features are divided into standard signal features and ranking signal features.
  • the up-to-standard signal features are one or more of multiple signal features
  • the sorted signal features are signal features other than the up-to-standard signal features among the multiple signal features.
  • the multiple signal characteristics are power and EVM, with EVM being the compliance signal characteristic and power being the sorting signal characteristic.
  • the control module 111 determines the target impedance configuration information and the target power configuration information corresponding to the first working mode based on the threshold condition corresponding to the standard signal feature among the various signal features in the first working mode.
  • the control module 111 sends at least one piece of power configuration information to the radio frequency signal module 13, assuming that certain power configuration information in the at least one piece of power configuration information is the third power configuration information.
  • the control module 111 determines, among the multiple configuration combinations to which the third power configuration information belongs, a first configuration combination that makes the signal characteristics of the standard meet the corresponding threshold conditions and that makes the characteristics of the sorted signals optimal. This process may be executed when the control module 111 determines that the power configuration information is no longer to be adjusted, or it may be executed when it is determined that there is a signal characteristic that satisfies the corresponding threshold condition for each standard signal characteristic. Two execution timings are given here as examples only. If the ranking signal features are multiple signal features, the ranking signal features can be weighted, and then the optimal ranking signal feature can be determined.
  • control module 111 determines, among the first configuration combinations to which each power configuration information belongs, a second configuration combination that optimizes the characteristics of the sorted signals.
  • the control module 111 determines impedance configuration information and power configuration information included in the second configuration combination as target impedance configuration information and target power configuration information corresponding to the first working mode, respectively.
  • FIG. 8 also provides a process for determining target impedance configuration information and target power configuration information.
  • the configuration screening module 11 may select the first working mode of the target channel.
  • Step 802 the configuration screening module 11 sends the currently selected power configuration information to the radio frequency signal module 13 .
  • the power configuration information is selected for the first time, default power configuration information may be selected, and the power configuration indicated by the default power configuration information belongs to the power configuration corresponding to the first working mode, and is set as the first traversed power configuration information.
  • the configuration screening module 11 sends at least one piece of impedance configuration information to the adjustable impedance matching module 12 . Assuming that the current is the first power configuration information, the configuration screening module 11 records signal features corresponding to multiple configuration combinations to which the first power configuration information belongs.
  • the configuration screening module 11 uses the signal features corresponding to the multiple configuration combinations to determine whether there is a signal feature that satisfies the corresponding threshold condition for each standard signal feature corresponding to the multiple configuration combinations.
  • Step 804 if it exists, the configuration screening module 11 sorts the signal features corresponding to the multiple configuration combinations according to the sorted signal features.
  • Step 805 the configuration screening module 11 selects the signal features that make the sorted signal features optimal and the signal features that meet the standards meet the corresponding threshold conditions, and determine the impedance configuration information to which the signal features belong.
  • the first power configuration information and the impedance configuration information form a first configuration combination corresponding to the first power configuration information.
  • the configuration screening module 11 determines the second power configuration information.
  • the second power configuration information enables to increase the power of the radio frequency signal generated by the radio frequency signal module 13 .
  • Step 807 if there is no signal feature that satisfies the corresponding threshold condition in at least one of the standard signal features corresponding to multiple configuration combinations, the configuration screening module 11 determines the second power configuration information, and the second power configuration information makes the radio frequency signal module 13 reduce the generated power of the RF signal.
  • Step 808 the configuration screening module 11 judges whether the second power configuration information has been sent to the radio frequency signal module 13 .
  • Step 809 if not sent, return to step 802.
  • Step 810 if it has been sent, the configuration screening module 11 determines the second configuration combination that optimizes the characteristics of the sorted signal in the first configuration combination corresponding to each power configuration information; the impedance configuration information included in the second configuration combination and The power configuration information is respectively determined as target impedance configuration information and target power configuration information corresponding to the first working mode.
  • step 802 the control module 111 sends at least one piece of impedance configuration information to the adjustable impedance matching module 12, and may send one piece of impedance configuration information at a time. Then it is judged whether each impedance configuration information has been sent. If not, the control module 111 continues to send the currently selected impedance configuration information to the adjustable impedance matching module 12; Flow of power configuration information.
  • the sorting signal feature also corresponds to a threshold condition.
  • the sorting signal feature is power
  • the threshold condition corresponding to the power is that the power is higher than the target power value.
  • the threshold condition corresponds to the first mode of operation.
  • the above process is to find the optimal impedance configuration information and optimal power configuration information.
  • the impedance configuration information and power configuration information whose signal characteristics meet the corresponding threshold conditions can also be found, that is, the target impedance is found. configuration information and target power configuration information.
  • an index table is established in the signal processing device, and the index table is used to store optimal impedance configuration information and optimal power configuration information corresponding to each working mode of each channel.
  • the index table may be stored in a storage area accessible by the signal processing device, for example, in a memory of the signal processing device.
  • the control module 111 determines the target impedance configuration information and target power configuration information corresponding to the first working mode, it can correspondingly store the target channel, the first working mode, the target impedance configuration information and the target power configuration information in the index table.
  • Table 2 provides an exemplary index table. Table 2 includes 4 columns, which are respectively working mode, channel, power configuration information and impedance configuration information.
  • the power configuration information is X and the impedance configuration information is Y; when the working mode is 1 and the channel is 2, the power configuration information is X1 and the impedance configuration information is Y1; when the working mode is 2.
  • the power configuration information is Xn, and the impedance configuration information is Yn.
  • Operating mode aisle Power configuration information Impedance Configuration Information 1 1 x Y 1 2 X1 Y1 ... ... ... ... 2 1 x Yn ... ... ... ... ...
  • the work mode is used as the first column for sorting, of course, the channel can also be sorted as the first column, see Table 3.
  • the configuration screening module 11 determines the current working channel and working mode.
  • the signal processing device may use a channel detection technology to determine the channel with the best current communication quality and the working mode. For example, after the mobile phone is connected to the WIFI device, it communicates with the WIFI device. The WIFI device selects a channel that is currently not used by other nearby WIFI devices, and selects the best working mode for the EVM in this channel.
  • the WIFI device selects a channel that is currently not used by other nearby WIFI devices, and selects the best working mode for the EVM in this channel.
  • any other way to determine the currently working channel and working mode can be applied to this embodiment of the present application.
  • the configuration screening module 11 determines that the currently working channel is the target channel, and the working mode is the first working mode.
  • the configuration screening module 11 determines target impedance configuration information and target power configuration information corresponding to the target channel and the first working mode in the index table.
  • the configuration screening module 11 sends target impedance configuration information to the adjustable impedance matching module 12 , and sends target power configuration information to the radio frequency signal module 13 .
  • the adjustable impedance matching module 12 adjusts the impedance configuration to the target impedance configuration after receiving the target impedance configuration information
  • the radio frequency signal module 13 adjusts the power configuration to the target power configuration after receiving the target power configuration information.
  • this process may be executed by the control module 111 .
  • the optimal impedance configuration information and the optimal power configuration information can be found based on the index table, as the ambient temperature changes and the aging of the device, the current optimal impedance configuration information and the optimal power configuration information Information is subject to change. Therefore, the optimal impedance configuration information and the optimal power configuration information need to be updated. In this case, the configuration screening module 11 is still updated based on the signal characteristics each time.
  • the configuration screening module 11 After determining the optimal impedance configuration information and the optimal power configuration information each time, the configuration screening module 11 stores the first working mode, the target power configuration information, the target impedance configuration information, and the target signal characteristics in an index table correspondingly, and the target signal characteristics are target Signal features corresponding to the power configuration information and the target impedance configuration information.
  • Table 4 provides an exemplary index table. Assuming that the signal features are power and EVM, power is the power of the radio frequency signal output by the radio frequency signal module 13 , and EVM is the EVM of the radio frequency signal output by the radio frequency signal module 13 . Table 4 includes 6 columns, respectively working mode, channel, power configuration information, impedance configuration information, power (in dBm) and EVM (in dBc).
  • the power configuration information is X
  • the impedance configuration information is Y
  • the power is power 1
  • the EVM is EVM1
  • the power configuration information is X1
  • the impedance The configuration information is Y1, the power is power 2
  • the EVM is EVM2
  • the power configuration information is Xn
  • the impedance configuration information is Yn
  • the power is power n
  • the EVM is EVMn.
  • the configuration screening module 11 may periodically acquire signal features corresponding to the target impedance configuration information and the target power configuration information, which are referred to as first signal features.
  • the configuration screening module 11 determines the change amount between the target signal feature and the first signal feature, which is referred to as the first change amount.
  • the configuration screening module 11 judges whether the first variation exceeds the target threshold, and if the first variation exceeds the target threshold, then adjusts at least one parameter in the target impedance configuration information to determine the current impedance configuration information that makes the signal characteristics optimal, which is called yes
  • the first impedance configuration information, the signal feature here is the signal feature of the radio frequency signal received by the configuration screening module 11 .
  • the at least one parameter may be a capacitance parameter, an inductance parameter, or the like.
  • the control module 111 sends the first impedance configuration information to the adjustable impedance matching module 12, and the first impedance configuration information instructs the adjustable impedance matching module 12 to adjust the impedance configuration to the impedance configuration indicated by the first impedance configuration information. If the first variation does not exceed the target threshold, no processing is performed.
  • the process of obtaining the first impedance configuration information is as follows.
  • the configuration screening module 11 determines that the first variation exceeds the target threshold, it adjusts at least one parameter in the target impedance configuration information to obtain second impedance configuration information.
  • the configuration screening module 11 sends the second impedance configuration information to the adjustable impedance matching module 12 .
  • the configuration screening module 11 obtains the target power configuration information and the signal feature corresponding to the second impedance configuration information, which is referred to as the second signal feature.
  • the configuration screening module 11 determines the amount of variation between the target signal characteristic and the second signal characteristic. If the variation does not exceed the first variation, but exceeds the target threshold, it indicates that the adjustment direction of the impedance configuration information is correct.
  • the configuration screening module 11 adjusts at least one parameter in the second impedance configuration information to obtain third impedance configuration information.
  • the adjustment direction corresponding to the third impedance configuration information is the same as the adjustment direction corresponding to the second impedance configuration information.
  • the at least one parameter may be capacitance parameters, inductance parameters, etc.
  • the configuration screening module 11 sends the third impedance configuration information to the adjustable impedance matching module 12 . If the change amount exceeds the first change amount, it indicates that the adjustment direction of the second impedance configuration information is wrong.
  • the configuration screening module 11 adjusts at least one parameter in the target impedance configuration information to obtain fourth impedance configuration information, the adjustment direction corresponding to the fourth impedance configuration information is opposite to the adjustment direction corresponding to the second impedance configuration information, and the at least one parameter may be a capacitance parameter , Inductance parameters, etc.
  • the configuration screening module 11 sends fourth impedance configuration information to the adjustable impedance matching module 12 .
  • the configuration screening module 11 stops adjusting the impedance configuration information when the change between the target signal feature and the latest signal feature does not exceed the target threshold after a certain adjustment of the impedance configuration information, and the newly adjusted impedance configuration information is the first impedance configuration information.
  • the latest signal feature is a signal feature corresponding to the target power configuration information and the latest adjusted impedance configuration information.
  • step 1001 the configuration screening module 11 periodically acquires the signal features corresponding to the target power configuration information and the target impedance configuration information.
  • the configuration screening module 11 judges whether the variation between the target signal feature and the first signal feature exceeds the target threshold.
  • the first signal feature is the signal feature corresponding to the current target power configuration information and target impedance configuration information.
  • Step 1003 if the target threshold is exceeded, the configuration screening module 11 adjusts at least one parameter in the target impedance configuration information, so that the change amount between the signal feature corresponding to the current impedance configuration information and the target power configuration information and the target signal feature does not exceed the target threshold, Then return to step 1001. If the target threshold is not exceeded, return to step 1001.
  • the configuration screening module 11 may adjust other parameters in the power configuration information except the at least one parameter.
  • the change amount is the change amount between the signal feature corresponding to the current configuration combination and the target signal feature.
  • the configuration screening module 11 stops adjusting the impedance configuration information, if the difference between the latest signal feature and the target signal feature does not exceed the target threshold for several consecutive times, it will update the latest adjusted impedance configuration information to the index table, and the latest The signal feature is a signal feature corresponding to the target power configuration information and the latest adjusted impedance configuration information. In this way, the latest impedance configuration information can be used subsequently.
  • the control module 111 may periodically send collection instructions to the collection module 112, instructing the collection module 112 to collect detection signals. After executing the process shown in Figure 10, the control module 111 may send a stop collection instruction to the collection module 112, instructing the collection module 112 to stop collecting the detection signal.
  • each signal feature corresponds to a change amount
  • each signal feature corresponds to a target threshold
  • the target thresholds corresponding to each signal feature are the same or different. Or, when there are multiple signal features, weighting the variation corresponding to the multiple signal characteristics to obtain a variation, and judging the relationship between the variation and the target threshold, where the target threshold is one.
  • the adjustable impedance matching module 12 includes at least one of an adjustable capacitance component 121 and an adjustable inductance component 122 , and an adjustment component 123 .
  • the capacitance adjustable component 121 is a component with adjustable capacitance; the adjustable inductance component 122 is a component with adjustable inductance.
  • the configuration screening module 11 sends at least one piece of impedance configuration information to the adjustable impedance matching module 12 .
  • the adjusting component 123 receives at least one piece of impedance configuration information.
  • the adjustment component 123 Whenever the adjustment component 123 receives a piece of impedance configuration information, it controls at least one of the capacitance adjustable component 121 and the inductance adjustable component 122, so that the adjustable impedance matching module 12 obtains the impedance corresponding to the impedance configuration information.
  • FIG. 11 shows the structure of an adjustable impedance matching module 12 .
  • the adjustable impedance matching module 12 includes an adjustable capacitance component 121 , an adjustable inductance component 122 and an adjustment component 123 .
  • the capacitance adjustable component 121 is connected to the inductance adjustable component 122 .
  • the adjustment component 123 is connected to the capacitance adjustable component 121 and the inductance adjustable component 122 respectively.
  • the adjustable capacitance component 121 or the adjustable inductance component 122 is connected to the radio frequency signal module 13 .
  • the adjustable impedance matching module 12 includes an adjustable capacitance component 121 .
  • the adjustable impedance matching module 12 may include a non-adjustable inductance component, and the inductance of the non-adjustable inductance component is fixed.
  • the adjustable impedance matching module 12 may include a capacitance non-adjustable component, and the capacitance of the capacitance non-adjustable component is fixed.
  • Both the capacitance adjustable component 121 and the inductance adjustable component 122 are passive devices.
  • the capacitance adjustable component 121 includes at least one capacitor array 1211, a first switch 1212 connected to each capacitor array 1211;
  • the inductance adjustable component 122 includes at least one inductor array 1221, a first switch 1212 connected to each Two switches 1222.
  • the adjustment component 123 is connected to the first switch 1212 and the second switch 1222 respectively.
  • the adjustment component 123 controls at least one of the first switch 1212 and the second switch 1222 to switch at least one of the capacitance and inductance of the adjustable impedance matching module 12, so that the adjustable impedance matching module 12 can obtain each impedance The impedance corresponding to the configuration information.
  • Each capacitor array 1211 includes multiple capacitors, and the size of each capacitor can be different.
  • Each inductor array 1221 includes a plurality of inductors, and the size of each inductor can be different.
  • FIG. 12 shows a structure of an adjustable impedance matching module 12 .
  • the adjustable impedance matching module 12 includes an adjustable capacitance component 121 and a non-adjustable inductance component.
  • the adjustable impedance matching module 12 includes three capacitor arrays 1211 and one inductor, each capacitor array 1211 includes three capacitors with different sizes, and each capacitor array 1211 is connected to the first switch 1212 .
  • the first switch 1212 is a single pole single throw switch.
  • Inductance non-adjustable components are inductors.
  • the adjusting component 123 can control each first switch 1212 to switch to a different capacitance of the capacitor array 1211 to realize impedance adjustment.
  • FIG. 13 shows the structure of another adjustable impedance matching module 12 .
  • the adjustable impedance matching module 12 includes an adjustable capacitance component 121 and a non-adjustable inductance component.
  • the adjustable impedance matching module 12 includes three capacitor arrays 1211 and one inductor, each capacitor array 1211 includes three capacitors with different sizes, and each capacitor array 1211 is connected to the first switch 1212 .
  • the first switch 1212 is a single pole single throw switch.
  • Inductance non-adjustable components are inductors and transformers.
  • the adjusting component 123 can control each first switch 1212 to switch to a different capacitance of the capacitor array 1211 to realize impedance adjustment.
  • At least one of the adjustable capacitance component 121 and the adjustable inductance component 122 may be an active device, and the active device may be a triode, a metal oxide semiconductor (MOS) tube, a diode, and the like.
  • the active device may be a triode, a metal oxide semiconductor (MOS) tube, a diode, and the like.
  • the adjustable impedance matching module 12 may also include an adjustment component 123 and a transformer 124 .
  • Fig. 14 shows an adjustable impedance matching module 12 including a transformer.
  • the adjusting component 13 adjusts the turns ratio of the primary coil and the secondary coil of the transformer 124 through switches to adjust the inductance and then the impedance.
  • the adjustment unit 123 can be a processor or a register.
  • the control module 111 communicates with the processor, the control module 111 sends the impedance configuration information to the processor, and the processor controls the adjustable capacitance component 121 and the adjustable inductance component 122 based on the received impedance configuration information. At least one kind is used to adjust the impedance.
  • the control module 111 writes an impedance configuration information into the register, the register is connected with the capacitance adjustable component 121 and the inductance adjustable component 122, and the register triggers an instruction to the capacitance adjustable component 121 and the inductance adjustable component 122 At least one kind is used to adjust the impedance.
  • the adjustable impedance matching module 12 may also include a configuration interface for receiving at least one piece of impedance configuration information sent by the configuration screening module 11 .
  • the radio frequency signal module 13 includes a power amplifier.
  • the power amplifier is used to amplify the power of the received radio frequency signal received from the antenna of the receiver.
  • the power amplifier may be a low noise amplifier (low noise amplifier, LNA).
  • LNA low noise amplifier
  • the impedance-transformed radio frequency signal output by the configuration screening module 11 can be input to the demodulation receiving unit.
  • the demodulation receiving unit is used to convert the radio frequency signal into a digital baseband signal.
  • the process of determining the target impedance configuration information corresponding to the first working mode by the configuration screening module 11 refers to the processing described above, and will not be repeated here.
  • the signal processing device includes an adjustable impedance matching module 12.
  • an adjustable impedance matching module 12 By traversing the impedance configuration information and power configuration information, it can make up for the influence of the component dispersion of the adjustable impedance matching module 12 on impedance matching, and can also make up for the radio frequency
  • the impact of discrete components of the power amplifier of the signal module 13 on impedance matching can also compensate for the impact of different transmission powers of radio frequency signals on impedance matching, and can also compensate for differences in impedance matching between different operating modes of different channels, so that signal processing The performance of the device is better.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Transmitters (AREA)

Abstract

La présente demande a trait au domaine technique des communications. L'invention concerne un appareil de traitement de signal et un module d'adaptation d'impédance accordable. L'appareil de traitement de signal comprend un module de criblage de configuration, un module d'adaptation d'impédance accordable et un module de signal radiofréquence, le module de criblage de configuration envoyant au moins une information de configuration d'impédance au module d'adaptation d'impédance accordable, et l'au moins une information de configuration d'impédance indique une configuration d'impédance correspondant à un premier mode de fonctionnement d'un canal cible ; le module de signal radiofréquence envoie un signal radiofréquence au module d'adaptation d'impédance accordable ; le module d'adaptation d'impédance accordable réalise une conversion d'impédance sur le signal radiofréquence d'entrée sur la base de l'au moins une information de configuration d'impédance, et envoie au module de criblage de configuration le signal radiofréquence qui a été soumis à une conversion d'impédance ; et le module de criblage de configuration détermine, sur la base de chaque signal radiofréquence qui a été soumis à une conversion d'impédance, des informations de configuration d'impédance cible correspondant au premier mode de fonctionnement. L'appareil de traitement de signal comprend un module d'adaptation d'impédance accordable, de telle sorte que l'appareil de traitement de signal peut utiliser des informations de configuration d'impédance optimale, et l'appareil de traitement de signal peut ainsi avoir de meilleures performances.
PCT/CN2022/108241 2021-08-09 2022-07-27 Appareil de traitement de signal et module d'adaptation d'impédance accordable WO2023016261A1 (fr)

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CN202110910054.1A CN115706567A (zh) 2021-08-09 2021-08-09 信号处理装置和可调阻抗匹配模块
CN202110910054.1 2021-08-09

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WO2023016261A1 true WO2023016261A1 (fr) 2023-02-16

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030073418A1 (en) * 2001-10-11 2003-04-17 David Dening Single output stage power amplification for multimode applications
CN1871745A (zh) * 2003-08-29 2006-11-29 诺基亚有限公司 采用自适应功率放大器补偿提供集成负载匹配的方法及设备
CN104753476A (zh) * 2013-12-30 2015-07-01 国民技术股份有限公司 多模多频功率放大器
CN105490648A (zh) * 2016-01-08 2016-04-13 合肥雷诚微电子有限公司 一种多模功率放大器及其应用
CN109525201A (zh) * 2018-11-07 2019-03-26 安克创新科技股份有限公司 一种射频电路的阻抗匹配方法及射频电路

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030073418A1 (en) * 2001-10-11 2003-04-17 David Dening Single output stage power amplification for multimode applications
CN1871745A (zh) * 2003-08-29 2006-11-29 诺基亚有限公司 采用自适应功率放大器补偿提供集成负载匹配的方法及设备
CN104753476A (zh) * 2013-12-30 2015-07-01 国民技术股份有限公司 多模多频功率放大器
CN105490648A (zh) * 2016-01-08 2016-04-13 合肥雷诚微电子有限公司 一种多模功率放大器及其应用
CN109525201A (zh) * 2018-11-07 2019-03-26 安克创新科技股份有限公司 一种射频电路的阻抗匹配方法及射频电路

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