2288 results about "Radio frequency front end" patented technology

The invention discloses a Beidou strong deception jamming detection processing method and system, and relates to the technical field of satellite navigation anti-jamming. The invention provides a solution based on dynamic gain monitoring and multi-dimensional feature collaborative analysis to solve the problems that a Beidou / GNSS system is prone to being affected by strong deception interference signals in a complex electromagnetic environment to suppress radio frequency link gain, and positioning failure is caused by the fact that deception signals and real signals are difficult to distinguish in a traditional technology. According to the method, radio frequency gain change is tracked in real time through a digital AGC module to generate an interference-to-signal ratio, an equivalent carrier-to-noise ratio is calculated in combination with a signal carrier-to-noise ratio for primary judgment, and accurate recognition is achieved by fusing verification of multi-dimensional characteristics such as code phase consistency, carrier frequency stability and signal strength fluctuation. The system comprises a radio frequency front end, a digital AGC module, a correlator channel and an interference processing module, and precise suppression of strong deception interference is realized through dynamic reference gain learning, interference signal mark elimination and robust positioning resolving mechanisms.

The invention provides a GNSS (Global Navigation Satellite System) anti-interference receiver system based on radio frequency front end-INS (Inertial Navigation System) combined assistance, which adopts a dual-core ARM Cortex-A9 and a programmable logic unit for layered decoupling, and realizes real-time receiving and processing of a high-bandwidth data stream, closed-loop control of an interference suppression link and quick response of a navigation path and a strategy decision. All the modules efficiently cooperate through AXI-Lite register mapping, interrupt signals, a shared state buffer area and a timer synchronization mechanism. By controlling bus and state buffer mapping to keep consistency and supporting a module-level independent debugging and system-level soft reset mechanism under hot start, the expandability of subsystem cascade debugging, fault module positioning and online updating is realized. In the aspects of module architecture, data channels and cooperation mechanisms, the structure order, efficient communication and control closed loop are realized, and an embedded multi-module cooperation anti-interference platform which is suitable for a high-interference environment, multi-channel fusion processing and navigation task real-time response is constructed.

The invention relates to a high-speed data synchronous acquisition and emission system suitable for a satellite communication MIMO (Multiple Input Multiple Output) system. The system comprises two acquisition and emission daughter cards and a clock management unit, the acquisition and emission daughter card comprises a multi-channel ADC acquisition unit and a multi-channel DAC refreshing unit; a multi-channel ADC acquisition unit of the acquisition and emission daughter card sends acquired data to an FPGA for processing through a JESD204B interface, and then the data is forwarded through an optical module; a multi-channel DAC refreshing unit of the acquisition and emission daughter card sends data received by the optical module to an FPGA for processing, and then the data is sent to a DAC through a JESD204B interface for interpolation filtering and IQ conversion, refreshed and output to a radio frequency front end; and the clock management unit realigns the phase of the device clock and the phase of the reference clock in each power-on process by using a trigger signal of the clock chip so as to realize inter-board synchronization. The system can improve the synchronization performance and reduce the power consumption.

The invention provides a design method and system for a high-integration-level low-power-consumption radio frequency front-end chip, and relates to the technical field of chips, the design method comprises the steps that a radio frequency transceiver, a power amplifier, a low-noise amplifier and a switch module are integrated on a single silicon substrate, and a self-adaptive bias control system is realized in the monolithic integrated radio frequency front-end chip; comprising the steps that a plurality of temperature sensors, a plurality of voltage sensors and a plurality of current sensors are arranged, a digital signal processor calculates optimal bias parameters of all modules according to a preset power consumption optimization algorithm, and bias control signals are sent to the corresponding modules through a digital-to-analog converter; based on the self-adaptive bias control system, dynamic power consumption management of the radio frequency front-end chip is achieved, when it is detected that radio frequency signal transmission is finished, the digital signal processor controls all the modules to enter a low-power-consumption standby state, and the overall power consumption of the chip is further reduced.

The invention provides a radio frequency front-end module. The radio frequency front-end module comprises a power amplifier, a single-pole double-throw radio frequency switch, a low-noise amplifier, a first single-pole single-throw radio frequency switch, a coupler, a double-pole double-throw radio frequency switch, a radio frequency amplifier, a second single-pole single-throw radio frequency switch, a detector and an operational amplifier. According to the radio frequency front-end module, when the processing capacity of the upper computer is weak or commands between the upper computer and the radio frequency front-end module are incompatible, the signal receiving capacity of the radio frequency front-end module can be improved, switching between a receiving bypass channel and a low-noise amplifier channel can be achieved in time, meanwhile, the complexity of transmitting power control is effectively reduced, radiation is reduced, and the reliability of transmitting power control is improved. The energy consumption is reduced, and the service life of the radio frequency front-end module is prolonged.

A clock generation apparatus includes a counter configured to count transitions in a locally generated clock signal when a data signal is received from a 1-wire serial bus, a latch configured to capture an output of the counter and to provide a latched output representative of the transitions counted in the locally generated clock signal while a synchronization pattern is received in the data signal, a flipflop and a comparator configured to drive a decision signal to a first signaling state when the output of the counter matches the latched output and to drive the decision signal to a second signaling state when the output of the counter does not match the latched output. The flipflop has an output that changes signaling state in response to an edge in the decision signal. The counter is reset when the decision signal is driven to the first signaling state.

The invention discloses a directional diagram reconfigurable antenna capable of switching feed through an MEMS switch, and belongs to the field of radio frequency front-end devices. The directional diagram reconfigurable antenna is composed of a micro-strip radiation unit, a guide parasitic unit, a composite beam ohmic contact type MEMS switch, a one-to-four feed network, a direct current bias line, a test patch bonding pad, a coplanar waveguide, a gradual change micro-strip line, a dielectric substrate and a metal ground backboard. The two-stage MEMS switches are erected on the one-to-four feed network, when the two-stage switches on a certain feeder line are turned on, radio frequency current can flow to the corresponding basic radiation unit through the feeder line to generate an inclined beam facing the quadrant, and the two basic radiation units on the front side can be enabled by simultaneously turning on the four switches on the front side to generate an inclined beam facing the quadrant. And generating an inclined beam in the front side positive direction. The antenna adopts a single-layer board design, the dielectric substrate does not need to be punched, the structure is simple, manufacturing is convenient, the adopted MEMS switch is small in loss and high in isolation degree, and rapid printing and manufacturing can be achieved through the surface etching process.

The invention belongs to the technical field of airborne radio frequency equipment testing, and particularly relates to a comprehensive simulation test system and method for airborne radio frequency equipment, and the system comprises a man-machine interaction unit, a comprehensive radio frequency rack unit, a power supply and control unit, and a cabinet matching test cable. Broadband radio frequency signal processing, waveform modulation and demodulation, audio analysis processing and data storage and recording of each airborne radio frequency device are realized through the integrated radio frequency rack unit; and signal processing and channel switching functions are realized through the intermediate frequency switching matrix module and the broadband radio frequency front-end processing module, so that different to-be-tested systems and radio frequency signals can be matched. According to the invention, a software radio technology is adopted, a software dynamic loading reconstruction scheme is adopted on a general radio frequency hardware platform to realize soft switching among different task functions of the airborne radio frequency equipment, a comprehensive simulation test on the complex airborne radio frequency equipment is realized, and the utilization rate of test resources is improved.

The invention discloses a radio frequency front-end module and a radio frequency front-end circuit. The radio frequency front-end module comprises a first filter, a second filter, a first inductor, a capacitor and a radio frequency switch. The radio frequency switch is provided with a first port, a second port and an antenna port, the first filter is connected to the first port, and the first filter is used for filtering a radio frequency signal of a first frequency band; the second filter is connected to the second port, the second filter is used for filtering the radio frequency signal of the second frequency band, and the second frequency band and the first frequency band at least partially do not coincide. The first inductor is connected between the first filter and the first port; the capacitor and the first inductor are connected in parallel to form parallel resonance, and the resonant frequency of the parallel resonance is in a second frequency band. When the first filter and the second filter work at the same time, parallel resonance formed by the capacitor and the first inductor can restrain radio frequency signals of the second frequency band leaked to the branch where the first filter is located through the radio frequency switch, so that the problem of signal crosstalk between different branches is solved.

The invention relates to the technical field of wireless communication, and discloses a communication equipment command and dispatch system based on artificial intelligence, the system maps the state of communication equipment into a standardized carrier phase disturbance mode, and after the disturbance mode is adaptively adjusted in combination with channel noise perception and conflict arbitration logic, the communication equipment is commanded and dispatched. Controlling the radio frequency front end to carry out injection; the adjacent communication equipment directly detects the disturbance mode to trigger the cooperative scheduling action by monitoring the physical error signal of the carrier synchronization loop of the adjacent communication equipment, and the implicit cooperative mode based on the physical layer beacon is constructed, so that the complex high-level signaling interaction required by the traditional scheduling is avoided, and the scheduling efficiency is improved. According to the method, the millisecond level, determined by a software protocol, of the collaborative response time between the devices is substituted into the microsecond level determined by the hardware physical layer response entscheid, the system can still maintain reliable transmission of scheduling instructions when facing high-density concurrent conflicts and strong channel noise, and a technical implementation path is provided for ultra-low-delay and high-reliability communication.

The invention relates to the technical field of resource allocation, in particular to a multiband signal optimization control system for a user 5G communication terminal, and the system comprises a geometric structure modeling module which is based on a multiband radio frequency front end of the user 5G communication terminal, collects multiband signals, and obtains the signal intensity through an MIMO antenna. In the invention, the dynamic environment of 5G communication is optimized through an acquisition and analysis method, the adaptability of signal processing is improved by utilizing real-time analysis of geometric structure data and topological characteristics, and the system is allowed to adjust the signal strength and frequency band use according to real-time data, so that the accuracy and efficiency of signal transmission are improved, and the system is suitable for popularization and application. Potential signal offset can be foreseen and adjusted in advance by evaluating the stability and variation trend of the signal, the communication quality is ensured not to be affected, and the adaptive capacity and predictive adjustment to the dynamic environment optimize the spectrum utilization rate and reduce the signal interference, especially in the environment with dense users and complex signals.

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 surface acoustic wave device, which comprises a substrate, a first dielectric layer, a piezoelectric layer, an interdigital transducer and a second dielectric layer, the first dielectric layer is arranged on the substrate; the piezoelectric layer is arranged on the first dielectric layer; the interdigital transducer is arranged on the surface of the piezoelectric layer, an overlapping area is formed between the two bus bars in the extending direction of the electrode fingers, a gap area is formed between the overlapping area and the bus bars, and the gap area is adjacent to the ends, close to the overlapping area, of the bus bars; the second dielectric layer is located in at least one gap region and covers the piezoelectric layer and the electrode fingers located in the gap region; wherein the propagation speed of the sound waves in the first dielectric layer and the propagation speed of the sound waves in the second dielectric layer are larger than the propagation speed of the sound waves in the piezoelectric layer, and the thickness of the first dielectric layer and the thickness of the second dielectric layer meet the condition that h2 is smaller than or equal to 0.3 h1. The surface acoustic wave device solves the problem that the Q value of the surface acoustic wave device cannot be improved and the high-frequency impure-mode suppression effect near the anti-resonance point cannot be improved in the prior art.

The invention provides a multi-channel radio frequency front-end module and a communication system, and the method comprises a local oscillator module which is used for generating a local oscillator signal; the up-conversion transmitting module is connected with the local oscillator module to receive the local oscillator signal; the down-conversion receiving module is connected with the local oscillator module to receive the local oscillator signal; the control system is respectively connected with the up-conversion transmitting module and the down-conversion receiving module and is used for generating a first radio frequency signal, sending the first radio frequency signal to the up-conversion transmitting module and receiving a second radio frequency signal from the down-conversion receiving module; wherein the up-conversion transmitting module is used for performing frequency mixing processing on a first radio frequency signal and a local oscillator signal and then outputting a first W-band signal, and the down-conversion receiving module is used for performing frequency mixing processing on a received second W-band signal and the local oscillator signal and then outputting a second radio frequency signal to a control system. Therefore, the embodiment of the invention can meet the application requirements in the millimeter wave radar field.

Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for communicating data over control plane in a 5G system. For example, some embodiments are directed to a user equipment (UE). The UE includes processor circuitry and radio front end circuitry. The processor circuitry can be configured to transmit, using the radio front end circuitry, a first message for connecting to a 5G network and indicating a capability of the UE relating to Cellular Internet of Things (CIOT). The processor circuitry can be further configured to transmit, using the radio front end circuitry and via a control plane to the 5G network, a second message comprising mobile originated data. The processor circuitry can be further configured to receive, using the radio front end circuitry, a third message from the 5G network.

The present application relates to a device and method for monitoring and early warning Low-power-consumption landslide collapse based on time division multiplexing, comprises: a camera equipment is configured to obtain monitoring images; a RF front-end is configured to transmit and receive radar signals; an intelligent sleep equipment is configured to set sleep time and power down the equipment(s) connected to it to put into sleep mode when the device requires working in a low power consumption mode; a signal processing equipment is configured to realize interference measurement and Doppler detection in a time division multiplexing manner and generate early warning or forecast information; a 5G equipment and an Ethernet port are configured to send the measurement results and monitoring images to a mobile terminal or host computer. The present application realizes the joint work of Doppler detection and interference measurement within one radar device through adaptive time division multiplexing.

The embodiment of the invention provides a multi-frequency-band signal processing method for a high-performance 5G router, and the method comprises the steps: constructing a dynamic radio frequency front-end gain regulation and control model based on signal intensity monitoring results of different frequency bands; acquiring real-time multi-band signal intensity data, and inputting the real-time multi-band signal intensity data into the dynamic regulation and control model; generating a corresponding gain adjustment parameter instruction according to a result output by the model; and sending the gain adjustment parameter instruction to a radio frequency front end to realize precise gain regulation and control so as to improve the communication quality in a weak signal environment. According to the scheme provided by the embodiment of the invention, the radio frequency front-end gain can be accurately regulated and controlled according to the signal intensity change of different frequency bands, so that the problem that the communication quality is reduced in a weak signal environment is solved.

Systems, apparatuses, methods, and computer-readable media are provided for a user equipment (UE) in a wireless communication system using an unlicensed spectrum. The UE includes a processor circuitry and radio front end circuitry coupled with the processor circuitry. The processor circuitry is configured to determine UE processing time for a first physical downlink shared channel (PDSCH) transmission and a second PDSCH transmission, and an additional processing time corresponding to the first and the second PDSCH transmissions. The processor circuitry is configured to process a hybrid automatic repeat and request acknowledgement (HARQ-ACK) assessment information for inclusion in a subframe on a physical uplink control channel (PUCCH) following the UE processing time and the additional processing time. The radio front end circuitry is configured to receive the first and the second PDSCH transmissions from a base station, and transmit the HARQ-ACK assessment information on the PUCCH to the base station.

The invention relates to a blind beam broadband anti-interference system and method for a GNSS (Global Navigation Satellite System) receiver. The system comprises a multi-element antenna array, a radio frequency front end, an A / D analog-to-digital converter, a broadband anti-interference module, a received signal processing module and a positioning calculation module. According to the system, all-satellite list capturing and searching attempts can be performed on each generated wave beam, satellite signals captured by each wave beam are tracked, and if multiple wave beams exist, the same satellite can be successfully captured at the same time; if yes, the satellite signals in the beams are sent to the tracking channels of the tracking channel groups corresponding to the beams to be tracked respectively; and during positioning calculation, the observed quantity of the tracking channel with the maximum carrier-to-noise ratio of the satellite is selected for positioning calculation, and the tracking channels of other beams continue to keep the tracking state of the satellite so as to participate in observation quantity screening of a subsequent round. By adopting the system, the anti-interference capability and the navigation positioning performance of the receiver can be effectively improved.

Disclosed in the present invention are a radio frequency front-end module with input clipping protection, and an electronic device. The radio frequency front-end module comprises at least one transmission path, which comprises at least one stage of a power amplifier circuit, and an output matching circuit. Each stage of amplifier circuit comprises at least one clipping circuit and a biasing circuit thereof, and an input matching circuit and a power amplifier, wherein the clipping circuit, the input matching circuit, the power amplifier and the output matching circuit are sequentially connected in series; and the clipping circuit is used for performing clipping processing on an input signal power and then outputting a signal having a relatively small power, and when the input power of the transmission path is greater than a set threshold value, the clipping circuit enables a clipping function, such that the power amplifier is protected by means of reducing the input power.

The invention provides an all-digital beamforming transmitter and an all-digital beamforming transmitting method based on a digital radio frequency technology. The all-digital beam forming transmitter provided by the invention comprises a plurality of baseband signal generators, a quadrature modulator, an adder, a 1-bit increment integral modulator, a digital-to-analog converter, a radio frequency front end and an antenna which are connected in sequence, each baseband signal generator is connected with one path of quadrature modulator and one antenna, one path of quadrature modulator comprises a plurality of quadrature modulators, and each baseband signal generator generates a pair of baseband signals; the number of the quadrature modulators in the one-path quadrature modulator is the same as the number of the adders, the number of the 1-bit incremental integral modulators, the number of the digital-to-analog converters, the number of the radio frequency front ends and the number of the antennas; the number of the baseband signal generators is the same as the number of wave beams formed by the antenna, and the number of the baseband signal generators is different from the number of the quadrature modulators in one path of quadrature modulator.

The invention discloses a radio relative positioning system based on OFDM (Orthogonal Frequency Division Multiplexing). The radio relative positioning system comprises an antenna array, a radio frequency front end and a radio frequency signal processing board, the antenna array in the antenna array is an eight-array-element antenna array, the central array is used for communication transceiving, and the edge seven array elements are used as receiving array elements; the radio frequency front end comprises a receiving part and a transmitting part, wherein the receiving part comprises an anti-burning switch group, a filtering switch group, a low-noise amplifier switch group and an amplitude-phase self-correcting switch group of array signals; the OFDM-based radio relative positioning system has the beneficial effects that the OFDM-based radio relative positioning system is a system for cooperative formation flight and combat of airplanes; the system has the characteristics of formation situation awareness, formation flight collaboration, proximity prompt and the like, solves the problem that an aircraft cannot be reliably positioned under satellite rejection, can carry out dense and safe formation flight under complex weather conditions such as cloud crossing and night, effectively improves the formation flight capability of the aircraft under the satellite rejection and complex weather conditions, and improves the reliability of the aircraft. The flight safety is improved, and the working intensity of a pilot is greatly reduced.

The present disclosure relates to an antenna filter unit (AFU) (280) communicatively coupled to a Radio Frequency (RF) Front End Module (RFEM) (250). The AFU (280) comprises a plurality of cavity filters and a Multiple-Input-Multiple-Output (MIMO) antenna unit to enable beam forming to multiple users.

The invention discloses a transformer structure and a radio frequency front end module, the transformer structure comprises a secondary coil and M primary coils, the M primary coils are sequentially spaced, and each primary coil surrounds the periphery of a specified point; the first end of each primary coil is configured to be connected to a first signal end, and the second end of each primary coil is configured to be grounded or connected to a power supply port. The secondary coil and the M primary coils are located on the same metal layer, and at least part of the secondary coil is wound in a gap formed by the M primary coils; the first end of the secondary coil is configured to be connected to a second signal end, and the second end of the secondary coil is configured to be grounded. The M primary coils are connected in parallel, so that the equivalent inductance value of the primary coils is reduced, the inductance value ratio between the secondary coils and the primary coils is increased, and the large impedance conversion ratio is achieved.

This disclosure provides systems, methods, and devices for wireless communications that support configurable clock dividers for mixer operation in a radio frequency front end (RFFE). In a first aspect, an apparatus for wireless communications includes a first clock loop comprising a first plurality of latches generating a first plurality of clock signals with a corresponding first plurality of phases; and a second clock loop comprising a second plurality of latches generating a second plurality of clock signals with a corresponding second plurality of phases, wherein the first clock loop is configured to be enabled or disabled based on a first enable signal, and wherein the second clock loop is configured to be enabled or disabled based on a second enable signal. Other aspects and features are also claimed and described.

A matching circuit, a radio frequency front-end circuit, a radio transceiver apparatus, and an electronic device are provided. The radio frequency front-end circuit includes a low noise amplifier and a power amplifier each coupled to an antenna through a matching circuit. The matching circuit includes a transformer, a capacitor, a first switch, and a first inductor element. The transformer is coupled to the power amplifier and the antenna. The capacitor is coupled to the transformer and to the low noise amplifier. The first switch is coupled to the capacitor and to the transformer and is grounded. The first inductor element is coupled to the capacitor and to the first switch and is grounded. A resonant network formed by the first inductor element and the first switch enables the radio frequency front-end circuit to in a wide frequency band.

The invention provides a radio frequency front end module. The circuit comprises a first matching circuit, a first-stage power amplification circuit, a coupler, a first radio frequency switch, a radio frequency main path, an attenuation path, a second radio frequency switch, a second matching circuit, a second-stage power amplification circuit, a third matching circuit, a power detection circuit, a low-pass filter, a first operational amplifier and a hysteresis comparator. The hysteresis comparator is used for controlling the input end of the first radio frequency switch to be communicated with the first output end of the first radio frequency switch or the second output end of the first radio frequency switch; and meanwhile, the control circuit is used for controlling the first input end of the second radio frequency switch or the second input end of the second radio frequency switch to be communicated with the output end of the second radio frequency switch. According to the radio frequency front-end module, on the premise that the power amplification circuit is not damaged, normal output of the radio frequency signal can be ensured, and meanwhile the situation that a post-stage output signal is distorted due to reduction of the bias voltage is avoided.

The invention relates to a detection-interference integrated unmanned aerial vehicle electromagnetic interference device, which belongs to the technical field of electronic countermeasure, and comprises an integrated design of an antenna module, a radio frequency front end module, a digital signal processing module and a main control module, the radio frequency front-end module comprises a detection receiving channel and an interference transmitting channel to process signal conversion, the digital signal processing module executes signal detection and analysis, intelligent interference decision and anti-self-interference signal processing based on a self-adaptive filtering algorithm, and the main control module is responsible for overall control and power supply. According to the invention, the technical problems of large response delay, complex system cooperation and incapability of continuous reconnaissance in the interference process of traditional anti-unmanned aerial vehicle equipment are solved. Real-time signal cancellation is achieved through the normalized least mean square algorithm, the reconnaissance capability is kept while interference is applied, the method has the advantages of being rapid in response, accurate in interference, low in power consumption and the like, and the countering efficiency is remarkably improved.

An approach is described for a user equipment (UE) to provide vehicle-to-everything (V2X) communication in a 5G new radio (NR) network. The UE includes processor circuitry that mode switches between two modes of resource allocation for the V2X communication, the two modes being a first mode and a second mode, wherein the first mode is a network scheduled resource allocation mode, and the second mode is a UE autonomous resource allocation mode. The UE also includes radio front end circuitry that communicates with a second UE using a V2X sidelink in the first mode or the second mode.

A filter device includes a body, a ground terminal, and resonators in the body and coupled to each other by electromagnetic field coupling. The resonators include a first resonator coupled to an input terminal, a second resonator coupled to an output terminal, and third and fourth resonators. The second resonator is adjacent to the first resonator in a first direction. The third resonator is adjacent to the first resonator in a second direction perpendicular to the first direction. The fourth resonator is adjacent to the third resonator in the first direction. The third and fourth resonators partially share a path to the ground terminal.