604 results about "Rf system" patented technology

Methods and apparatus for determining the feasibility of sensing a target object in an integrated radio frequency (RF) system capable of sensing and communication are described. In some embodiments, a wireless network node (e.g., a base station) may be configured to transmit or receive a communication signal with a communication UE, the transmission or reception of the communication signal resulting in signal interference with a sensing UE; transmitting a sensing feasibility reporting configuration to the sensing UE, the sensing feasibility reporting configuration including requirements associated with one or more radio frequency (RF) sensing metrics; receiving a sensing feasibility report from the sensing UE, the sensing feasibility report including information related to the one or more RF sensing metrics given the signal interference situation; and transmitting an RF sensing reference signal to the target object based on the information related to the one or more RF sensing metrics indicating a positive feasibility of sensing the target object.

The invention provides a multifunctional satellite-borne integrated radio frequency system and device. The multifunctional satellite-borne integrated radio frequency system comprises a broadband low-profile integrated transceiver array, a reconfigurable integrated radio frequency front end and a flexible high-performance processing platform, the broadband low-profile integrated transceiving array adopts a multi-subarray design, has the capabilities of multi-beam signal transceiving, two-dimensional wide-angle beam scanning and received signal low-noise amplification, and adopts a low-profile and foldable structural design to adapt to the constraint of a satellite-borne platform; the reconfigurable integrated radio frequency front end has the capabilities of full-band signal up-down conversion processing and multi-channel full-interaction radio frequency routing; the flexible high-performance processing platform adopts a reconfigurable, open-type and high-reliability digital processing architecture, and has the functions of intermediate-frequency signal high-speed sampling, high-performance digital processing, software definition and on-orbit dynamic upgrading. According to the invention, a traditional discrete satellite-borne radio frequency system can be converted into a high-integration, multifunctional and conformal system, and the scale of the satellite-borne radio frequency system can be effectively reduced.

The invention discloses a multi-channel transceiving integrated system based on an RFSOC (Radio Frequency System On Chip) and a radio frequency SIP (Session Initiation Protocol). The multi-channel transceiving integrated system comprises an RFSOC system, a multi-channel clock synchronization module, a radio frequency SIP system and a power supply network, the RFSOC system comprises a control sampling module, a storage module and an optical fiber module, the control sampling module comprises a plurality of RFSOC chips, a CPLD (Complex Programmable Logic Device) chip and a main control chip, and the RFSOC chips are used for processing intermediate frequency signals and realizing data interaction with the optical fiber module; the CPLD chip is used for enabling a power supply network; the main control chip is used for performing control coordination among the plurality of RFSOC chips; the storage module is used for realizing program solidification of the RFSOC system; the optical fiber module is used for realizing high-speed transmission of broadband receiving data; the multi-channel clock synchronization module is used for providing a clock reference of the whole system; the radio frequency SIP system comprises a radio frequency SIP module, a Balun network and a local oscillator power division amplification module. The radio frequency SIP module realizes receiving, transmitting and processing of multi-channel radio frequency signals. According to the invention, a multi-channel transmit-receive integrated system with high integration, large bandwidth and miniaturization can be realized.

The invention relates to the technical field of radio frequency generator circuits, and provides a phase-locking frequency-stabilizing multi-core control radio frequency system, which processes I / Q signals and constructs a multi-core task allocation and cooperation mechanism through a digital baseband processing module, and performs pre-distortion processing and system scheduling. The double-closed-loop control module is used for stabilizing fundamental frequency, correcting temperature drift and compensating and adjusting frequency swing amplitude; the hybrid power amplification module is used for performing multi-stage hybrid power amplification signal processing and temperature monitoring through a driving stage and output stage combined topology; and the feedback sampling network module collects output signals in real time through a directional coupler and feeds back, adjusts and precisely controls the frequency stability according to the output signals.

The invention discloses a digital frequency band protection method for an integrated radio frequency system, belongs to the technical field of integrated radio frequency integration, and is used for performing receiving protection processing and transmitting protection processing on signals in a digital signal processing stage between a broadband radio frequency transceiving subsystem and a signal processing subsystem in the integrated radio frequency system. According to the method, from the aspect of frequency division multiplexing, required signal frequency points are selected through the configurable band-pass filter bank for subsequent processing, and frequency points interfering other load systems are filtered through the configurable band-stop filter bank, so that the frequency band protection function of the integrated radio frequency system is achieved, and guarantee is provided for multi-load cooperative work; meanwhile, through flexible implementation of a field programmable gate array (FPGA) device, the method can multiplex a hardware platform with a broadband radio frequency transceiving subsystem or a signal processing subsystem, and the problem that independent equipment must be adopted in a traditional electromagnetic signal processing method is solved.

A superconducting proton cyclotron (100). The superconducting proton cyclotron (100) comprises a main cyclotron system (10), a cyclotron auxiliary system (20) and a cyclotron control system (30). The main cyclotron system (10) comprises an ion source (11), a central region (12), a superconducting magnet system (13), a radio frequency system (14) and a lead-out region (15). The ion source (11) is used for generating a proton beam; the central region (12) is used for leading out the proton beam of the ion source (11) and performing beam focusing inside the central region (12); the radio frequency system (14) leads out and accelerates the beam of the central region (12); a static magnetic field generated by the superconducting magnet system (13) can constrain the proton beam and accelerate same to target energy; the lead-out region (15) can lead out the proton beam.

Methods and apparatus for determining feasibility of sensing a target object in an integrated radio frequency (RF) system capable of sensing and communication are described. In some embodiments, a wireless network node (e.g., base station) may be configured to send or receive a communication signal with a communication UE, the sending or the receiving of the communication signal causing signal interference with a sensing UE; send to the sensing UE a sensing feasibility report configuration, which may include requirements associated with one or more radio frequency (RF) sensing metrics; receive from the sensing UE a sensing feasibility report, which may include information relating to the one or more RF sensing metrics given the signal interference; and based on the information relating to the one or more RF sensing metrics indicating a positive feasibility of sensing the target object, send an RF sensing reference signal toward the target object.

The invention discloses a broadband single-pole double-throw switch MMIC, and belongs to the field of radio frequency / microwave. The switch adopts a symmetrical dual-channel structure, each channel comprises an input end series switch circuit, an output end series switch circuit and two parallel switch branches, channel switching is realized through two complementary control voltages, and impedance matching is carried out between the circuits by adopting microstrip lines. According to the technical scheme, switching tubes, resistors and inductors are utilized to form a circuit network, and a signal transmission path is optimized through the resonance effect of the inductors and switching tube cut-off capacitors in parallel branches in combination with a resistor parallel structure and a microstrip line matching technology. According to the invention, the performance of low insertion loss and high isolation in a broadband is achieved, the voltage standing wave ratio of an off-state output port is reduced, the port matching capability is improved, and an efficient and stable solution is provided for signal routing in a radio frequency system.

A method of adjusting an impedance of a power amplifier of a radio frequency system for matching with an antenna switch die is disclosed. In one aspect, the method includes connecting the power amplifier to the antenna switch die via an impedance adjustment circuit, the impedance adjustment circuit including an input node, an output node, a plurality of electrical components arranged between the input node and the output node, and at least one switch configured to selectively electrically connect at least one of the electrical components to the input node and the output node. The method further includes determining an Error Vector Magnitude of the radio frequency system for each of a plurality of states of the at least one switch, and controlling the at least one switch to enter the state of the plurality of states that minimizes the Error Vector Magnitude of the radio frequency system.

The invention discloses a low-voltage gallium nitride power amplifier based on second harmonic suppression. The low-voltage gallium nitride power amplifier is used for solving the technical problem that the overall efficiency of a radio frequency system is low due to an existing radio frequency power amplifier. The amplifier comprises an input stage circuit, an input stage low-voltage gallium nitride transistor, an intermediate stage circuit, an intermediate stage low-voltage gallium nitride transistor, an output stage circuit, an output stage low-voltage gallium nitride transistor group, a drain bias capacitor, a drain bias voltage port and a secondary harmonic suppression output matching network, by arranging an input-stage low-voltage gallium nitride transistor, an intermediate-stage low-voltage gallium nitride transistor, an output-stage low-voltage gallium nitride transistor group, a secondary harmonic suppression output matching network and a corresponding connection relationship, the secondary harmonic suppression output matching network can be used for suppressing a low-voltage gallium nitride transistor on the basis of a low-voltage gallium nitride process technology. Harmonic suppression is directly carried out on the second harmonic, so that the output power and the power additional efficiency of the radio frequency power amplifier are improved, and the overall efficiency of a radio frequency system is improved.

The invention discloses a matching method and device for an impedance value of a radio frequency matcher, and relates to the field of radio frequency equipment. The method comprises the following steps: acquiring real-time data corresponding to a radio frequency matcher, and inputting the real-time data into a matching parameter prediction model to obtain a prediction matching parameter corresponding to the real-time data; a set optimization parameter is obtained, the prediction matching parameter is optimized according to the reflection coefficient module value, the environment parameter data and the set optimization parameter, and an optimized prediction capacitance value and an optimized prediction inductance value are obtained; and determining an adjustment sequence between the capacitance and the inductance according to the optimized predicted capacitance value and the optimized predicted inductance value, and adjusting the capacitance and the inductance corresponding to the radio frequency matcher according to the adjustment sequence and the optimized predicted capacitance value and the optimized predicted inductance value. Load impedance dynamic matching is carried out for real-time self-adaption, manual intervention is reduced, the power transmission efficiency is greatly improved, signal loss is reduced, and therefore the stability of a radio frequency system is improved.

A radio system tracking can automate the tracking of an electronic tag device (ETD) by identifying the ETD's signal identifier and then perform a tracking function to determine a general position of the ETD. Over time, as the ETD moves and a computer vision system monitors and tracks the device location, the radio position tracking of the ETD and the computer vision position tracking of the ETDs will eventually converge and the computer vision can then determine that the ETD in the camera view is the same ETD communicating with the radio tracking system. Once this convergence occurs and the computer vision system can determine the ETD position, the radio system can use this now known ETD position to calibrate the position calculation calculated by the radio system and screen signals that would not be possible from positions other than the position determined by the computer vision system.

The invention discloses a method for eliminating interference of isolator chip radiation on a radio frequency system, which can measure the frequency of a low-frequency RC oscillator in a chip wafer test stage or a packaged finished product test stage, flexibly burn a corresponding frequency control signal of a storage unit according to the requirement of a client product communication system, and improve the reliability of the radio frequency system. Therefore, the local frequency and the harmonic frequency of the isolator chip are adjusted, so that the isolator chip can avoid the communication frequency band of a client. According to the method, a low-temperature-drift RC oscillation circuit is combined with a frequency-locked loop technology, and it is guaranteed that the frequency deviation of a local oscillation signal is controlled within 3% in different process deviations and a full-temperature range. Besides, the frequency of the high-frequency oscillator is accurately adjusted until the frequency is close to the target frequency, and the configuration parameters are stored in the nonvolatile storage module, so that the isolator chip does not interfere with other communication systems in the actual working process, and the stability and the reliability of the whole communication system are improved.

The invention discloses a modular sip transceiver assembly based on HTCC, and belongs to the technical field of satellite communication. The modular transceiver assembly mainly comprises two radio frequency front end sip modules, two secondary frequency conversion sip modules, two local oscillator carrier plate sip modules, a power supply and an FPGA control module. The whole assembly mainly comprises five radio frequency systems and four receiving channels which are completely the same and are almost consistent with the other transmitting channel in structure, modular design is adopted, a mature microwave substrate processing technology is combined with an existing micro-assembly process, and through an HTCC ceramic tube shell and a sip technology, surface mounting application of a microwave 3D module is achieved, and meanwhile light-weight and small-size design is achieved. According to the three-dimensional stacked packaging, various passive devices can be subjected to interlayer integration, the assembly integration level is greatly improved, an expected complete machine system can be verified more quickly and flexibly, especially for a multi-path system, only a single module needs to be used for testing in the earlier stage, and the three-dimensional stacked packaging module is suitable for various communication occasions.

The invention discloses a radio frequency power output circuit and semiconductor process equipment, relates to the technical field of semiconductors, and can improve the problem of low cavity matching degree caused by the difference of a radio frequency system so as to improve the performance of a thin film. The radio frequency power output circuit comprises a radio frequency power supply module which comprises a first radio frequency power supply and a second radio frequency power supply; the power distribution module comprises a first input end, a second input end and a plurality of output ends in one-to-one correspondence with the plurality of process chambers; the first input end is electrically connected with a first radio frequency power supply, the second input end is electrically connected with a second radio frequency power supply, and each output end is used for being electrically connected with a corresponding process chamber; and the power distribution module is used for averagely distributing the energy of the first radio frequency signal received by the first input end and / or the energy of the second radio frequency signal received by the second input end to each process chamber.

Systems and methods of passive intermodulation (PIM) detection in a radio frequency (RF) system including: injecting, from each port of a two-port PIM analyzer, two test tones or a wideband modulated carrier signal into the system one port at a time; receiving, at each port, a response signal from the system in response to the test tones or wideband modulated carrier signal; injecting, from two ports of the two-port PIM analyzer, test tones or a wideband modulated carrier signal into the system; receiving, at the two ports, a response signal from the system in response to the test tones or wideband modulated carrier signal; and identifying one or more PIM sources based on the response signals.

The invention relates to a multi-agent deep Q network optimization indoor VLC-RF resource energy efficiency distribution method, and belongs to the technical field of optical wireless communication. In order to improve the system energy efficiency of the VLC-RF heterogeneous network, a user is abstracted as an intelligent agent of a deep Q network, the user selects a VLC-RF access point, and power allocation and subcarrier resource allocation are abstracted as the action of the intelligent agent. A product of a proportional fairness satisfaction value and a system energy consumption profit value considering satisfaction of a user to a communication rate alliance or satisfaction of the user to a channel reliability alliance is designed to serve as a reward Q value of a deep Q network, alliance conversion of an intelligent agent is controlled by using a variable greedy factor, and an access AP channel state emphasized by the user is obtained; and then, selecting an action with the maximum Q value for the user by adopting a deep Q network, and optimizing a plurality of user associated access points, access point transmitting power and subcarrier resource allocation in the VLC-RF system. According to the method, the user satisfaction is increased, and the system energy efficiency of the VLC-RF can be improved.

A controller of a plasma processing apparatus is configured to execute (a1) acquiring a first parameter at an input terminal and / or an output terminal of a first matching circuit, (a2) acquiring a second parameter at an input terminal and / or an output terminal of a second matching circuit, and b) performing a first control operation and a second control operation sequentially and repeatedly. The first control operation sequentially performs tuning of a power level of a first RF signal, a frequency of the first RF signal, and a first variable element in the first matching circuit based on the first parameter acquired in the (a1). The second control operation sequentially performs tuning of a power level of a second RF signal, a frequency of the second RF signal, and a second variable element in the second matching circuit based on the second parameter acquired in the (a2).

The invention relates to a combiner, a radio frequency system and communication equipment, and the combiner comprises a first frequency division unit which is used for carrying out the frequency division processing of an electromagnetic wave signal received by a common end, so as to output a first frequency band signal through a first output end; the second frequency division unit is used for performing frequency division processing on the electromagnetic wave signal received by the common end so as to output a second frequency band signal through a second output end; the first stop band unit is connected with the first frequency division unit and is used for generating a zero point of a stop band in the frequency range of the second frequency band signal; the second stop band unit is connected with the second frequency division unit and is used for generating a zero point of a stop band in the frequency range of the first frequency band signal; wherein the first frequency division unit, the second frequency division unit, the first stop-band unit and the second stop-band unit respectively comprise a plurality of components, the components are capacitors or inductors, a plurality of discrete capacitors and inductors can be adopted, and compared with an LTCC combiner in the related technology, the hardware cost of the combiner can be greatly reduced.

The invention provides an EVM (Error Vector Magnitude) detection method, a communication device and network equipment, which are applied to the field of wireless communication. The method comprises the steps that a first unit receives first information from a network manager and sends second information to a second unit according to the first information in an EVM detection period, the second information comprises EVM detection data and time domain information of the EVM detection data, and the time domain information is used for indicating the position of the EVM detection data in a wireless frame; the first unit receives an EVM detection result from the second unit, the EVM detection result comprises an EVM value of at least one node in the second unit and the number of sampling points of the EVM detection data, and the EVM value of any node in the at least one node is determined according to the EVM detection data collected at the node. Based on the method, the EVM value of the radio frequency system can be obtained at a low cost.

The invention discloses a method, equipment and medium for automatically testing the sensitivity of a broadband radio frequency system, and relates to the technical field of broadband radio frequency testing, and the method comprises the steps: starting a testing process, and coordinating a plurality of calibration equipment and equipment to be tested in a wireless network in the same testing time slot, synchronously sampling spectrum data of each calibration device through an air interface and processing the spectrum data into a noise distribution parameter set; and dynamically adjusting the output power of the vector signal generator and synchronously monitoring the bit error rate change according to the received power predicted value until the difference value between the bit error rate and a preset target bit error rate threshold value meets a convergence condition, recording the received power value during convergence as a sensitivity test result, and generating a test report. By generating the high-precision dynamic noise map and calculating the compensation transmitting power calibration value, accurate sensing and active compensation of the space noise of the test environment can be realized.

The present application provides an anti-interference analysis method, device, system and medium for a vehicle-mounted radio frequency system, and relates to the field of electromagnetic compatibility technology. The method includes: obtaining a system model and input parameters of a wireless radio frequency system; obtaining antenna model parameters and antenna position of an environmental monitoring antenna on a vehicle; performing electromagnetic simulation calculations based on the system model and input parameters as well as antenna model parameters and antenna position to obtain electromagnetic simulation analysis results; obtaining spectrum data collected by the environmental monitoring device under preset spectrum acquisition parameters, when the environmental monitoring antenna is in an antenna position and a preset antenna orientation; performing electromagnetic simulation calculations based on the spectrum data and the electromagnetic simulation analysis results to obtain anti-interference analysis results of the vehicle-mounted radio frequency system, including the interference margins between the wireless radio frequency systems, and the interference margins between the wireless radio frequency system and the road environment. The method of the present application improves the practicality and effectiveness of anti-interference analysis of vehicle-mounted radio frequency systems.

The invention relates to a radio frequency device, a radio frequency system and communication equipment. The radio frequency device is provided with a first transmitting port, a second transmitting port, a tuning control port, a first antenna port used for being connected with a first antenna, and a second antenna port used for being connected with a second antenna. In the radio frequency device, a first transmitting circuit and a second transmitting circuit amplify a radio frequency signal to be transmitted, and a gating-based tuning circuit is correspondingly connected with the output end of the first transmitting circuit, the output end of the second transmitting circuit, a tuning control port, a first antenna port and a second antenna port. And the gating tuning circuit selects to transmit the radio frequency signal output by the first transmitting circuit or the second transmitting circuit through a target antenna connected with the target antenna port, and changes the tuning parameter of the gating tuning circuit according to the received tuning signal, so as to adjust the impedance position of the target antenna connected with the target antenna port. Miniaturization design and energy consumption control are considered, and the overall communication performance is improved.

The embodiment of the invention provides a radio frequency circuit, a radio frequency system and communication equipment. When the radio frequency circuit is arranged in a radio frequency system, the radio frequency circuit can be matched with a baseband chip which supports receiving baseband receiving signals of different frequency bands and outputs baseband transmitting signals of different frequency bands in the radio frequency system. The radio frequency circuit comprises a power amplification circuit, a low-noise amplification circuit and a first switch. The radio frequency circuit comprises a transmitting port, a receiving port and an antenna port. The first switch comprises a first end, a second end, a third end and a fourth end. The transmitting port of the radio frequency circuit is connected with the input end of the power amplification circuit, and the receiving port of the radio frequency circuit is connected with the output end of the low-noise amplification circuit. The output end of the power amplification circuit is connected with the first end of the first switch; the input end of the low-noise amplification circuit is connected with the second end of the first switch. And the third end and the fourth end of the first switch are respectively connected with an antenna port of the radio frequency circuit.

The invention relates to a radio frequency system, communication equipment, an impedance adjusting method and a readable storage medium, the radio frequency system comprises a power amplification circuit, a power detection circuit, a tuning circuit and a processing circuit, the power detection circuit is used for coupling radio frequency signals and outputting forward coupling signals and reverse coupling signals; the processing circuit is configured to determine reflection characteristic parameters of the transmitting path according to the forward coupling signal and the reverse coupling signal; determining a real-time impedance position according to the reflection characteristic parameters and the initial impedance position of the load in the Smith chart; wherein the initial impedance position is related to the frequency band of the radio frequency signal; tuning parameters of the tuning circuit are adjusted according to the real-time impedance position and the target impedance position, so that the distance between the adjusted real-time impedance position and the target impedance position is smaller than the distance between the real-time impedance position and the target impedance position before adjustment. The radio frequency system can be adaptively adjusted in each operation scene, and the overall performance of the communication equipment is ensured.

The invention provides a single / double-module energy-adjustable superconducting electron accelerator device, a medical isotope production system and a medical isotope production method, and the device comprises an injection system which is used for generating an electron beam current with certain energy and current intensity; the acceleration module system comprises single or double parallel acceleration modules, and each acceleration module comprises a superconducting cavity and a low-temperature unit; the low-temperature unit comprises a refrigerator, a high-thermal-conductivity cold chain, and a cold shield and a vacuum shell which sequentially cover the periphery; the radio frequency system is used for feeding microwave power into the superconducting cavity, maintaining the amplitude and phase stability of an electromagnetic field and accurately compensating the frequency deviation of the superconducting cavity; and the electron motion trail control system is used for guiding the electron beam to pass through the acceleration module and the plurality of circulating transmission pipelines with the corner radiuses sequentially enlarged for multiple times. The technical problems that an existing accelerator is limited by serious heating and cannot achieve high-flow-intensity and high-energy operation, a low-temperature cooling system is complex, so that the operation and maintenance cost is high, high energy and high flow intensity cannot be considered at the same time, and medical isotope production is difficult to meet are solved.

The invention relates to a radio frequency system and communication equipment, and relates to the technical field of communication. The radio frequency system comprises: at least two transmit-receive circuits, each transmit-receive circuit comprising a power amplification module and a low noise amplification module; the at least two power supply modules comprise at least one target power supply module, the target power supply module is connected with the target power amplification module and the target low-noise amplification module, and the target power supply module is used for providing power supply voltage for the target power amplification module and the target low-noise amplification module in a time-sharing manner; the target power amplification module and the target low-noise amplification module correspond to different transceiving circuits; and the control module is used for controlling the target power supply module to provide power supply voltage according to gain information of the target low-noise amplification module under the condition that the radio frequency system works in a single connection mode so as to supply power to the target low-noise amplification module, and controlling the power supply voltage of the residual power supply modules so as to support any transmitting and receiving circuit to transmit and receive radio frequency signals at the same time. The power consumption can be reduced.

The invention discloses a multi-channel integrated radio frequency system based on double-threshold interference detection and dynamic spectrum aggregation. A radio frequency front-end unit is used for realizing broadband spectrum access and performing analog-to-digital conversion; the digital channel processing unit is used for realizing channelized segmentation through up-conversion and down-conversion, carrying out band elimination filtering to shield unavailable channels and outputting filtering parameters to support dynamic channel recombination; the digital signal parallel processing unit performs parallel access by using the divided channels; the spectrum sensing unit is used for carrying out double-threshold channel interference detection and real-time spectrum analysis according to the parallel access signals; and the frequency spectrum decision-making unit is used for judging the channel state and fusion detection judgment according to the interference detection result, judging the availability of a specific channel in the data link network and carrying out cooperative dynamic frequency spectrum aggregation. According to the method, a consistent spectrum access decision is realized by adopting a spectrum monitoring, sensing convergence and fusion decision mechanism, and consistent understanding of an available frequency set and high-reliability network domain dynamic spectrum aggregation are guaranteed.

The invention relates to a communication system. The communication system comprises a baseband module, a radio frequency module and a radio frequency front-end module, the radio frequency interface signal processing module is coupled between the radio frequency module and the radio frequency front end module; the radio frequency interface processing module is configured to at least receive a first radio frequency signal from the radio frequency module; wherein the radio frequency interface signal processing module comprises a signal processing device, and the signal processing device is configured to execute a digital pre-distortion operation at least based on a first radio frequency signal so as to obtain a second radio frequency signal with digital pre-distortion information. According to the scheme provided by the invention, the nonlinear problem of the signal generated by the power amplifier can be weakened or eliminated, the power, efficiency and bandwidth of the power amplifier are further improved, meanwhile, the adaptability of the high-performance pre-distortion method in a radio frequency system is improved, and the development complexity and the application cost of the application of the high-performance pre-distortion method are reduced.

The invention discloses a channel calibration method and device, a storage medium and electronic equipment, and relates to the technical field of communication, and the method comprises the steps: obtaining a to-be-calibrated channel and a target signal sequence for channel calibration; dividing a to-be-calibrated channel into a plurality of channel arrays; determining a first difference condition corresponding to a to-be-calibrated channel contained in each channel array and second difference conditions corresponding to the plurality of channel arrays based on the target signal sequence; and based on the first difference condition and the second difference condition, determining a target difference condition corresponding to the to-be-calibrated channel, the target difference condition being used for calibrating the to-be-calibrated channel. Different signal sequences do not need to be sent one by one, the sending frequency is reduced, and meanwhile storage resources can be saved, that is, only one target signal sequence needs to be stored; in addition, calibration of a large number of to-be-calibrated channels can be completed by using few computing resources, the calibration efficiency can be improved, and it is guaranteed that the performance of the radio frequency system is not affected.