449 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.

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.

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.

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 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 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 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 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.

The invention discloses a large-scale hybrid beam forming array construction method based on a passive beam forming network, and belongs to the field of radio frequency systems. According to the method, the array is divided into a plurality of active sub-modules (each sub-module comprises a radiation unit array, a passive beam forming network, a multi-channel radio frequency module and a digital-to-analog conversion module), and the layered beam forming technology of a digital baseband processing module is combined, 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, localizing a digital beam forming matrix into a block diagonal matrix, and reducing the calculation amount; 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 such as 5G / 6G millimeter wave communication, radar imaging and the like, the system power consumption and the calculation complexity are remarkably reduced, and meanwhile, the performance of a full-digital beam forming array is approached.

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 utility model discloses a hardware circuit for connecting a high-power speaker with a headphone jack, including an audio codec, an audio power amplifier and a speaker, wherein the LINEOUT port of the audio codec is respectively connected to a filter capacitor C1 and a filter capacitor C2 through a Π-type circuit, wherein the filter capacitor C2 is connected in series with a resistor R4, and the resistor R4 is connected to the audio power amplifier, and the audio power amplifier is connected to the speaker through an analog signal; the Π-type circuit is composed of a resistor R1, a resistor R2 and a resistor R3. The utility model adds series magnetic beads FB1 and FB2 to the back end of the audio power amplifier, and adds parallel capacitors C3 and C4 to form a low-pass filter network, which can effectively filter out high-frequency stray signals while ensuring that the main audio signal is not attenuated; thereby effectively improving the interference problem of the entire circuit to other radio frequency systems.

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 invention discloses a multi-channel transceiver integrated system based on RFSOC and radio frequency SIP, which includes an RFSOC system, a multi-channel clock synchronization module, a radio frequency SIP system, and a power network; the RFSOC system includes a control and sampling module, a storage module, and an optical fiber module, the control and sampling module includes multiple RFSOC chips, a CPLD chip, and a main control chip, the RFSOC chips are used to process intermediate frequency signals and realize data interaction with the optical fiber module; the CPLD chip is used to enable the power network; the main control chip is used to perform control and coordination between multiple RFSOC chips; the storage module is used to realize program solidification of the RFSOC system; the optical fiber module is used to realize high-speed transmission of broadband received data; the multi-channel clock synchronization module is used to provide a clock reference for the entire system; the radio frequency SIP system includes a radio frequency SIP module, a balun network, and a local oscillator power distribution and amplification module, and the radio frequency SIP module realizes reception, transmission, and processing of multi-channel radio frequency signals. The present invention can realize a multi-channel transceiver integrated system with high integration, large bandwidth, and miniaturization.

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.