344 results about "Rf system" patented technology

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 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.

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.

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 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 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 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 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.

The invention provides a single-module double-cavity parallel 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 a low-temperature unit and a superconducting cavity; 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 refrigerating machine is connected with the superconducting cavity through a high-thermal-conductivity cold chain; the radio frequency system is used for feeding microwave power into each superconducting cavity, maintaining the amplitude and phase stability of an electromagnetic field and accurately compensating the frequency deviation of the superconducting cavity; and the electronic motion trail control system is used for guiding the electronic beam current to pass through the double parallel superconducting cavities and a plurality of circulating transmission pipelines of which the corner radiuses are 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.

Embodiments described herein relate to an apparatus that includes an RF power supply and an RF power splitter. In an embodiment, the RF power splitter includes a plurality of outputs, and a plurality of RF impedance matches are electrically coupled to different ones of the plurality of outputs of the RF power splitter. In an embodiment, a plurality of RF sensors are configured to measure a voltage and / or a current along a plurality of transmission lines that couple each of the plurality of outputs of the RF power splitter to a different one of the plurality of RF impedance matches. In an embodiment, the apparatus further includes a controller communicatively coupled to the plurality of RF sensors and the plurality of RF impedance matches. The controller is configured to balance power that passes through the plurality of RF impedance matches with a detuning operation.

The present disclosure provides an antenna device and a radio frequency system. Wherein, the antenna device comprises an antenna array and a feed network; wherein the feed network comprises a main path and a plurality of branch paths connected with the main path; the antenna array is divided into a plurality of antenna unit groups, each antenna unit group comprises a plurality of antenna units, the antenna unit comprises a radiation structure and a phase shift structure connected with the radiation structure; the phase shift structures of the plurality of antenna units located in the same antenna unit group are connected with the same branch path.

The utility model relates to a kind of compatible double-architecture radio frequency front-end architecture, to improve the flexibility and compatibility of radio frequency system under different working modes;The architecture includes radio frequency front-end module, and radio frequency front-end module contains transmitting and receiving port, radio frequency switch port, low noise amplifier, power amplifier, first radio frequency switch, second radio frequency switch, antenna port and front-end transmitting port;Low noise amplifier is connected with transmitting and receiving port, and signal is amplified under receiving mode;First radio frequency switch is connected low noise amplifier with power amplifier, according to working mode switching signal path, avoid low noise amplifier and power amplifier work simultaneously;Second radio frequency switch connects power amplifier with antenna port, and signal transmission is to antenna;Front-end transmitting port sends signal through power amplifier.

The disclosure related to a RF front-end device, a RF system and an electronic device. The RF front-end device is configured with an antenna terminal, a control terminal for receiving multiple control signals, and multiple input terminals for receiving multiple RF signals. The RF front-end device includes: a first switch unit having multiple first terminals connected to the multiple input terminals respectively; a power amplification unit, having an input terminal connected to a second terminal of the first switch unit, and an output terminal connected to the antenna terminal; and a control unit, where the control unit is connected to each of the control terminal and the power amplification unit, and is configured to control, based on a received target control signal, the power amplification unit to perform power amplification processing on a received target RF signal. The target control signal is one of the multiple control signals, and frequency bands of the multiple RF signals are different. This can increase the multiplexing efficiency of the power amplifier unit, enhance the integration level of RF front-end device, and achieve a low cost.

The present development relates to a method for managing the logistics of a customer service area, such as an operating room, which improves the process of scheduling procedures and the management of resources assigned to the allocation of a customer service area (0). This is achieved through the use of technological surveillance tools. In particular, the disclosed method takes into consideration the use of electronic identification elements, such as, for example, a radio frequency system (RFID tag), a real-time location system (RTLS tag), or a Bluetooth beacon system, linked to a user or assistant, a supply, or equipment. This information allows to establish a status of the service provision and to carry out a statistical analysis that allows to obtain patterns in terms of to the interactions between staff, supplies and equipment in relation to a service area, historically.

The present invention discloses a method for eliminating the interference of isolator chip radiation on the radio frequency system. The method can measure the frequency of the low-frequency RC oscillator during the chip wafer test or the finished product test stage after packaging, and flexibly burn the corresponding frequency control signal of the storage unit according to the needs of the customer's product communication system to adjust the local oscillator frequency and its harmonic frequency of the isolator chip to avoid the customer's communication frequency band. This method uses a low-temperature drift RC oscillator circuit combined with frequency-locked loop technology to ensure that the frequency deviation of the local oscillator signal is controlled within 3% within different process deviations and the full temperature range. In addition, by accurately adjusting the frequency of the high-frequency oscillator until it is close to the target frequency, and storing these configuration parameters in a non-volatile storage module, the isolator chip will not interfere with other communication systems during actual operation, thereby improving the stability and reliability of the entire communication system.

The present application relates to a kind of multi-agent deep Q network optimization indoor VLC-RF resource energy efficiency allocation method, belong to optical wireless communication technical field.The present application is to improve the system energy efficiency of VLC-RF heterogeneous network, user is abstracted as the agent of deep Q network, user selects the action of VLC-RF access point, power distribution and subcarrier resource allocation is abstracted as the action of agent, the product of the proportional fair satisfaction degree value that considers user to the communication rate alliance satisfaction or to the channel reliability alliance satisfaction and system energy consumption profit value is designed as the reward Q value of deep Q network, using a variable greed factor control agent's alliance conversion, obtains the access AP channel state of user side emphasis;Then, using deep Q network selects the action of maximum Q value for user, optimizes multiple user association access point in VLC-RF system, access point transmission power and subcarrier resource allocation.The proposed method can improve the system energy efficiency of VLC-RF while increasing user satisfaction.

The invention discloses an active beam forming array construction method and system supporting concurrent beams, and belongs to the field of radio frequency systems. According to the method, an array is divided into a plurality of active sub-modules (each sub-module comprises a radiation unit array, a passive beam forming network and a multi-channel radio frequency module), and a combiner is combined to realize a plurality of beams which can be independently controlled, so that the balance of high performance and low complexity is realized. The method specifically comprises the following steps: 1) dividing a coverage space into a plurality of sub-regions by using a passive beam forming network, so that the beam of each sub-region can be freely and flexibly controlled; 2) a large-scale array is constructed through flexible expansion of sub-modules, and full-aperture gain is ensured; and 3) the radio frequency channels of the idle sub-regions are dynamically turned off so as to save energy consumption. In scenes of 5G / 6G millimeter wave communication, satellite communication and the like, system complexity and power consumption can be reduced, and simultaneous working of a plurality of concurrent beams can be realized.

Embodiments of the present disclosure relate to a vacuum and high voltage radio frequency system for a medical linear accelerator. A radio frequency system for a radiotherapy machine includes: a first portion including a first gas at a first pressure; a second portion comprising a second gas at a second pressure, the second gas being different from the first gas; and a component between the first portion and the second portion, the component containing a first gas at a first pressure.

This application provides a device and method for processing spatial environmental noise in electronic devices. The device includes: a communication antenna for receiving communication signals and spatial environmental noise; a detection antenna for real-time detection of the spatial environmental noise; a switching network connecting the signal paths of the communication antenna and the detection antenna respectively, for switching the device's operating mode; a signal processing module connected to the signal path of the detection antenna for amplifying, attenuating, and phase-shifting the detected noise signal; a coupler whose through port is connected to the signal path of the communication antenna, its coupling port is connected to the signal path of the detection antenna, and its output is connected to a radio frequency system; and a control module for adjusting the attenuation and phase shift of the signal processing module according to the noise signal parameters received by the communication antenna and the detection antenna, so that the two noise signals are superimposed in antiphase in the coupler. This application improves the receiving performance of wireless communication devices through active detection and cancellation.

The invention relates to a radio frequency system and communication equipment. The radio frequency system comprises a transceiver; the input end of the power amplifier is connected with a first transmitting port of the transceiver, and the output end of the power amplifier is connected with a first end of the first switch; the other first end of the first switch is connected with the second transmitting port; the second end of the first switch is connected with the antenna through the filtering unit; the transceiver is configured to obtain the target transmitting power of transmitting an uplink signal by the radio frequency system; under the condition that the target transmitting power is greater than the maximum output power of the transceiver, controlling the first switch to conduct a path between the power amplifier and the filtering unit; and under the condition that the target transmitting power is smaller than the maximum output power, the first switch is controlled to conduct the path between the second transmitting port and the filtering unit, so that the communication quality can be improved in a low-power scene, and the radio frequency power consumption can also be saved.

The invention provides a resource scheduling method, the method is applied to an electronic device, available frequency bands for wireless communication of the electronic device comprise a first frequency band and a second frequency band, and the method comprises the following steps: when the first frequency band is adopted for wireless communication, obtaining a first communication parameter, and according to the first communication parameter, obtaining a second communication parameter; the method comprises the steps of determining a first limited type when wireless communication is carried out by adopting a first frequency band, determining an uplink frequency band of a radio frequency system of the electronic equipment and a downlink frequency band of the radio frequency system from the first frequency band and a second frequency band according to the first limited type, and controlling the radio frequency system to schedule radio frequency resources according to the uplink frequency band and the downlink frequency band, so that an uplink of the radio frequency system adopts the uplink frequency band and a downlink of the radio frequency system adopts the downlink frequency band to perform wireless communication. The embodiment of the invention further provides a resource scheduling device, electronic equipment and a computer storage medium.

The present application provides an EVM detection method, a communication apparatus, and a network device, which are applicable to the field of wireless communication. The method includes the steps of: a first unit receiving first information from a network management and transmitting second information to a second unit at an EVM detection period based on the first information, the second information including EVM detection data and time domain information of the EVM detection data, and the time domain information indicating a position of the EVM detection data within a radio frame; and the first unit receiving an EVM detection result from the second unit, the EVM detection result including an EVM value of at least one node in the second unit and the number of sampling nodes of the EVM detection data, and the EVM value of any node in the at least one node is determined based on the EVM detection data collected on the node. According to the above method, the EVM value of a radio frequency system can be obtained at low cost.

The invention relates to a satellite-borne soft definition type radio frequency system and an application method thereof. The system comprises an on-orbit intelligent management module, a reconfigurable baseband processing module, a digital receiving module and a digital transmitting module, wherein the on-orbit intelligent management module is used for switching a current working mode of a satellite as required, determining a corresponding working frequency band and determining management and control parameters of other modules according to the working frequency band; the reconfigurable baseband processing module is used for calling an IP core in a software pool to form current complete baseband processing software based on a current system working state, processing received data, processing data to be transmitted, and transmitting the processed data to the digital transmitting module; the digital receiving module is used for performing pre-selection, amplification, filtering and frequency conversion processing on the received radio frequency signal; and the digital transmitting module is used for performing frequency conversion, amplification and filtering processing on the to-be-transmitted data and then outputting the processed data. Therefore, the radio frequency transmission requirements of various satellites and systems can be met.

Systems and methods for facilitating interactions between a medical device (e.g., an imaging device, a surgical tool, a robotic arm, etc.) and a patient using radio frequency (RF) co-localization are provided. The systems include a radio-frequency (RF) interrogator system, one or more first RF target devices for coupling to a patient support for supporting a patient with respect to whom a medical device is to perform a task, and one or more second RF target devices for coupling to the medical device. A controller determines a position of the patient support within an RF interrogator system reference frame, a first position of the medical device within the RF interrogator system reference frame, a transformation between the RF interrogator system reference frame and a patient support reference frame, and a second position of the medical device within the patient support reference frame.

This application provides a radio frequency (RF) system, a terminal device, and a communication method thereof, relating to the field of communication technology. The RF system includes an RF signal generation circuit, a control node, a first tuning circuit, and a second tuning circuit. The first tuning circuit includes a first input terminal, a first output terminal, and a first control terminal, with the first output terminal used for coupling with a first radiator. The second tuning circuit includes a second input terminal, a second output terminal, and a second control terminal, with the second output terminal used for coupling with a second radiator. The control node is coupled to both the first and second control terminals. The RF signal generation circuit is coupled to the first input terminal, the second input terminal, and the control node. The RF signal generation circuit transmits RF signals to the first and second input terminals, and the control node controls the second tuning circuit to assist the first tuning circuit, or the first tuning circuit to assist the second tuning circuit, to improve the communication performance of the assisted communication standard.

The application relates to a mobile phone direct connection S-band phased array radio frequency system based on a multi-layer mixed pressing plate technology, and belongs to the technical field of low-orbit satellite wireless communication, and specifically relates to a mobile phone direct connection S-band phased array radio frequency system based on a multi-layer mixed pressing plate technology. The phased array radio frequency system contains a plurality of single-channel radio frequency components, each single-channel radio frequency component is internally integrated with a radio frequency SIP module, a power supply SIP module, a radio frequency PA and a transceiving filter; the complete radio frequency transceiving link and the calibration branch are highly integrated in the single-channel TR component with the size of 60*50*8mm, the overall structure and the peripheral interconnection design of the component are greatly simplified, the single-channel radio frequency component multiplexing and the small-size and light-weight design of the component are realized, and the S-band low-orbit satellite engineering application is adapted.

The invention discloses a radio frequency system. According to the technical scheme of the embodiment of the invention, the power supply voltage is provided for the power amplification module through the voltage regulator, and the power supply voltage has the same variation trend as the amplitude of the amplified voltage signal generated by the power amplification module, so that the efficiency of the radio frequency system is improved.