63 results about "Radio frequency communication" patented technology

A method of controlling a receiver of radio frequency communications includes intervals between the reception of a data packet header and an acknowledgement sent by the receiver being constant, and, once a packet has been correctly received, circuits of the receiver are put into standby for a duration corresponding to the interval after each reception of a header of same rank as that of the correctly received packet.

This invention belongs to the field of communication technology and discloses a voice communication system based on deep ultraviolet light. The system includes: a voice communication terminal, a transmitting information processing module, an electro-optical conversion module, a transmitting optical system, a receiving optical system, a photoelectric conversion module, and a receiving information processing module. Compared with traditional radio frequency communication, ultraviolet light has excellent anti-interference and anti-interception capabilities; compared with point-to-point communication in the deep infrared band, ultraviolet light has non-line-of-sight characteristics, enabling communication even in jungle warfare. This invention uniquely employs FMCW (Frequency Modulated Continuous Wave) modulation. FMCW encodes bit information as a continuous increase or decrease in frequency. The receiving end obtains the difference frequency signal through mixing, which can be demodulated using matched filtering or Fourier transform, significantly improving processing gain and noise immunity. Even under weak scattered light conditions, signals can be reliably extracted from strong backgrounds, greatly improving communication link margin.

An apparatus can include a resonator configured to oscillate at a resonant frequency; and a first oscillator core and a second oscillator core coupled to the resonator in a parallel configuration; wherein the first oscillator core is configured to drive the resonator by providing a first drive signal and generate a first oscillator signal based on oscillation of the resonator; and wherein the second oscillator core is configured to drive the resonator by providing a second drive signal and generate a second oscillator signal based on oscillation of the resonator.

The present application relates to the field of radio frequency communication technology, and discloses a radio frequency nonlinear distortion adaptive compensation receiving method and system, wherein a state page number is constructed by combining a radio frequency chip working state word with a pilot deviation amount and envelope jump strength, so that the subsequent compensation process can be carried out around the current chip working page, instead of being processed only according to the whole frame unified error. By identifying the state switching window set inside the current receiving frame, a switching correction process is introduced in addition to the basic compensation, so that the stable area and the switching area can be processed respectively, thereby reducing the overcompensation or insufficient compensation problem caused by the whole frame unified compensation. Through the write-back update of the state page coefficient table, the device can gradually accumulate the basic compensation experience under different state pages, so that the adaptive coefficient can be called faster when the repeated state page appears subsequently, the long-term running stability is improved, and the problem that the whole frame unified compensation mode in the prior art is difficult to adapt to the internal state discrete switching of the radio frequency chip is solved.

The application relates to the technical field of radio frequency communication, and discloses a T / R chip data cache dynamic allocation method and system.The method comprises the following steps: obtaining a task queue of target chip data, and performing structured analysis to obtain task parameters; performing task-oriented division according to the task parameters to obtain an initial cache quota scheme; performing self-adaptive decomposition on the target chip data to obtain a characteristic basis vector, and performing sparse coding based on the characteristic basis vector to obtain a dynamic decision of the target chip data; performing strategy optimization on the initial cache quota scheme according to the dynamic decision to obtain an optimized cache quota scheme; performing space configuration on target cache resources of the target chip data according to the optimized cache quota scheme to obtain a storage result; performing performance evaluation on the storage result to obtain a cache performance benchmark value, and determining a final cache quota scheme based on the cache performance benchmark value; and the application can improve the T / R chip data cache allocation efficiency.

This application relates to the field of radio frequency communication technology, providing a low-noise amplifier and a radio frequency front-end module. The low-noise amplifier includes: a signal input terminal and a signal output terminal; a common-source cascode (CRBC) amplifier module connected to the signal input terminal for signal amplification; a switching module connected to both the CRBC amplifier module and the signal output terminal; and a gain module connected to the switching module for increasing the signal amplification gain. The switching module controls the on / off switching between the gain module and the CRBC amplifier module. By controlling the on / off switching between the gain module and the CRBC amplifier module through the switching module, the low-noise amplifier can flexibly switch between a high-gain operating mode and a high-linearity operating mode. This allows for selection of high-gain or high-linearity signal amplification processing according to the application scenario, enabling the low-noise amplifier to meet the requirements of both high-gain and high-linearity scenarios.

This invention relates to a biomimetic compound eye wide-area sensing and communication system for unmanned swarms, comprising a collaborative optical signal modulation and transmission unit, a wide-area biomimetic compound eye photoelectric sensing unit, and a spatial optical communication and positioning calculation unit. By structurally encoding control commands and employing frequency shift keying modulation, digital information is converted into near-infrared modulated optical signals, enabling spatial information propagation. The receiving end utilizes a biomimetic compound eye structure to converge wide-area field-of-view optical signals and completes photoelectric conversion through a spatial position sensor. Multi-channel signal processing is combined to achieve communication signal demodulation and feature extraction. Based on this, multi-dimensional features are constructed and spatial position calculation is performed, realizing integrated information interaction and relative position perception between nodes. This invention does not rely on radio frequency communication links and satellite navigation systems. In complex electromagnetic countermeasures and navigation-constrained environments, it can achieve stable communication and collaborative sensing for unmanned swarms, possessing advantages such as strong anti-interference capability, good concealment, and high environmental adaptability.

Disclosed herein is a low-power temperature field monitoring agent based on physical layer broadcast calculation and a monitoring method thereof. The agent comprises a base station / signal tower broadcast unit, a distributed passive temperature sensing terminal, a physical layer inference execution unit and an abnormal result collection unit; the base station broadcast unit encodes the temperature anomaly detection AI model weight into a radio frequency signal broadcast, the passive temperature sensing terminal completes the multiplication mixing operation of the weight signal and the temperature sensing signal in the radio frequency domain through a passive radio frequency mixer, directly outputs the inference result by using the radio frequency hardware physical characteristics, and the abnormal result collection unit completes the result receiving, space-time analysis and fault positioning. Based on the physical principles of radio frequency communication, mixing operation and energy collection, the terminal power consumption is reduced to the micro-watt level, near-zero power consumption operation is realized, the monitoring real-time performance and deployment density are greatly improved, and the agent is suitable for distributed temperature monitoring scenes such as power equipment, battery packs, industrial pipelines and data centers.

Configurable filters for asymmetrical radio frequency communication are disclosed. In one aspect, a radio frequency module includes a first filter configured to band-pass frequencies for a first transmit sub-band of a first communication band, a second filter configured to band-pass frequencies for a second transmit sub-band of the first communication band, and a third filter configured to band-pass frequencies for a receive band of the first communication band. The radio frequency module further includes an antenna terminal and at least one antenna switch module configured to connect the third filter and one of the first and second filters to the antenna terminal.

The utility model relates to radio frequency communication technical field, concretely is a kind of impedance matching circuit and radio frequency switch. Impedance matching circuit is composed of multiple rectangular matching sections connected in turn and a circular matching section located at the end, and the size of each rectangular matching section is:0.93mmx0.33mm, 0.55mmx0.92mm, 0.74mmx0.82mm, 0.76mmx1.1mm and 1mmx0.25mm, and the diameter of circular matching section is 0.7mm, form a kind of novel circuit for impedance matching, apply it in radio frequency switch, can make radio frequency switch have higher bandwidth, break through the limitation that traditional broadband PIN switch can only reach 18GHz, and working frequency range reaches 2GHz-21GHz, standing wave is ≤2.2dB, insertion loss is ≤5dB, isolation is >60dB.

This application discloses a three-dimensional ultra-wideband power divider, belonging to the field of radio frequency communication technology. It includes an input port, a strongly coupled line unit, a weakly coupled line unit, a first output port, and a second output port. The input port, strongly coupled line unit, and weakly coupled line unit are connected sequentially. The first terminal of the second end of the weakly coupled line unit is connected to the first output port, and the second terminal of the second end of the weakly coupled line unit is connected to the second output port. The weakly coupled line unit includes any number of coupling lines and multiple first resistors, with the multiple first resistors bridging between two coupling lines of the weakly coupled line unit. The strongly coupled line unit is a three-dimensional integrated vertical substrate circuit structure. This application overcomes the contradiction between ultra-wideband, high isolation, low loss, and mass production through a three-dimensional integrated structure, gradually changing coupling lines, and a multi-level bridging resistor network, providing a high-performance power divider solution for high-frequency communication systems.

This invention discloses a method for testing radio frequency communication base stations under multiple interference scenarios. The method includes: collecting interference signal data within the base station's coverage area, classifying it into different types of interference populations, and statistically analyzing signal parameters; quantifying the preemption capability coefficient of each type of interference population; acquiring the base station's real-time workload and environmental parameters, and predicting the base station's niche capacity and interference impact threshold based on the real-time workload and environmental parameters; generating an interference population evolution sequence based on the interference population's preemption capability coefficient and interference impact threshold, and conducting base station anti-interference simulation tests; collecting base station performance data during the anti-interference simulation test, rating the base station's anti-interference preemption capability based on the base station performance data, and outputting the rating results; and constructing a test environment that includes direct advantage replacement and cooperative interference of interference populations based on actual interference signal data for simulation testing, which can improve the accuracy of communication base station test results.

An apparatus may include: a common input terminal; a first inductor and a second inductor, each coupled to the common input terminal, wherein the first inductor and the second inductor are disposed in an electromagnetic coupling configuration; a lower frequency band output terminal coupled to the first inductor; a higher frequency band output terminal coupled to the second inductor; wherein the first inductor and the second inductor are to separate signals received from the common input terminal into the lower and the higher frequency band output terminals based on frequencies of the received signals. An apparatus may include: a first transformer magnetically couple a signal within a first frequency band and generate a first magnetic field with a first orientation; and a second transformer configured to magnetically couple a signal within a second frequency band that is different from the first frequency band.

This invention relates to the field of radio frequency communication technology and discloses a communication frequency selection method and apparatus based on RSSI. The method includes: sweeping a target frequency band using step units to obtain a set of sweep points; performing peak detection on the sweep point set to obtain the peak received signal strength and interference frequencies; calculating at least one third-order intermodulation point within the target frequency band based on each interference frequency; fitting the sweep point set, each interference frequency, and each third-order intermodulation point to obtain a target sweep point set; performing weighted calculations on each target sweep point in the target sweep point set based on antenna weighting coefficients and the center frequency to obtain a received signal strength weighted value; and selecting the optimal frequency point based on each received signal strength weighted value. Therefore, implementing this invention can improve the accuracy and reliability of communication frequency selection, extend communication distance, and ensure the comprehensiveness and accuracy of frequency selection, thereby improving the stability and anti-interference capability of wireless audio communication.

The application discloses a receiving assembly, an RFID tag and a manufacturing method of the receiving assembly, and belongs to the technical field of radio frequency communication. The receiving assembly comprises a shielding piece, a gasket and a receiving element. The gasket and the shielding piece are formed into an integrated structure through compression molding. The receiving element comprises a body and a receiving end arranged on the body. The gasket is arranged between the receiving element and the shielding piece. The body is connected to the gasket, and the receiving end is arranged in the integrated structure. The receiving assembly, the RFID tag and the manufacturing method of the receiving assembly of the application avoid gluing between the gasket and the shielding piece by compression molding, reduce the assembly steps of the gasket and the shielding piece, simplify the assembly process, do not affect the assembly regardless of the size of the gasket, reduce the assembly difficulty, and thus reduce the cost.

The present disclosure relates to an electronic device that can include a wireless circuit with a radio having an antenna that transmits wireless data with a wireless base station according to a communication schedule and performs sensing using the antenna. The sensing can involve transmitting a sensing signal and receiving a reflected signal during a sensing period. A control circuit can adjust timing of the sensing period to align with a scheduled inactive time for the radio based on network configuration information and current sensing requirements of the device. In this way, the radio can perform radio frequency sensing for adjusting wireless transmissions to meet radio frequency exposure requirements without substantially disrupting wireless data communications.

The present specification relates to the technical field of radio frequency communication, and specifically provides a radio frequency communication system and an electronic device, comprising multiple antennas, a switching switch circuit and multiple radio frequency transceiver modules, the multiple radio frequency transceiver modules comprising at least one satellite communication transceiver module, and the satellite communication transceiver module is connected with any one of the antennas through the switching switch circuit. In the embodiment of the present specification, the satellite communication antenna can realize antenna multiplexing on any one of the multiple antennas, and a satellite communication antenna does not need to be separately deployed, thereby reducing the difficulty of antenna layout and design, and the position of the satellite communication antenna is not fixed, thereby being more flexible, and when a certain antenna is affected, other antennas can be switched, thereby ensuring the signal quality and connection stability of satellite communication.

This invention discloses a radio frequency transceiver with both relay and mission modes, belonging to the field of radio frequency communication equipment technology. The transceiver includes a duplexer, a circulator, a receiving component, a transmitting component, a switch, a frequency converter, and a mode switching controller. The mode switching controller enables precise switching between the two modes. In mission mode, the signal is transmitted / received via a first switch, a second duplexer, a circulator, and a third receiving / transmitting component. In relay mode, the mission signal is transmitted via a first switch, a first duplexer, and a first receiving / transmitting component, while the relay signal is processed via a first switch, a second duplexer, a second receiving / transmitting component, and an independent frequency converter. This invention achieves integrated dual-mode functionality in a single device while solving problems such as crosstalk, poor frequency band compatibility, and slow switching in existing devices. It also reduces the size and power consumption of the radio frequency transceiver, improves signal transmission stability and communication quality, and adapts to complex communication scenarios.

The application discloses a wideband equalization circuit based on microstrip ring resonators and adjustable lumped elements, and belongs to the technical field of radio frequency communication. The circuit comprises i microstrip ring resonators and adjustable lumped elements connected across the microstrip ring resonators, wherein i is greater than or equal to 1 and is a positive integer; the microstrip ring resonators are connected through microstrip lines, and the first and last two microstrip ring resonators are connected with an input port and an output port through microstrip lines. The application connects adjustable lumped elements across the microstrip ring resonators, and realizes multiple adjustments of the working frequency, working bandwidth and amplitude equalization of the circuit through impedance adjustment of the adjustable lumped elements, which is beneficial to multifunctional and reconfigurable design of equipment. In addition, the whole circuit structure is simple and can meet the requirements of miniaturization and light weight of equipment.

This application discloses a digital predistortion (DPD) implementation method, system, device, and storage medium, relating to the field of radio frequency communication technology. The method includes: when the soft core receives a calibration start command, it first sends a sinusoidal calibration signal to the FPGA platform, triggering its initial calibration of the transmission link; after receiving a calibration confirmation signal from the FPGA, the soft core reads the pre-stored initial training modulation signal from its internal memory and sends it to the FPGA platform as transmission data; subsequently, it reads the feedback data after nonlinear distortion by the power amplifier from the FPGA via a high-speed bus; based on this feedback data and the initial training signal, the soft core iteratively updates the digital predistortion compensation parameters and updates the transmission data; the FPGA performs stable compensation on the power amplifier (PA) based on the updated transmission data. This method, through the collaboration of the FPGA and the soft core, tightly couples calibration, acquisition, caching, and updating, utilizes on-chip high-speed storage to avoid external memory access, and combines pipelined processing to significantly improve DPD accuracy, iteration efficiency, and resource utilization.

The present invention relates to an auxiliary module (57) for an electrical switching device comprising an input, an output, a first housing and a switching module configured to switch between a first configuration in which the switching module allows current to flow between the input and the output and a second configuration in which the switching module blocks current, the first housing defining a chamber that houses the switching module and defining a space for receiving the auxiliary module (57), the space containing a signaling member configured to transmit information related to the state of the electrical switching device to the auxiliary module (57) when the auxiliary module (57) is in the space. The auxiliary module (57) comprises a controller (80) configured to generate a message and a radio frequency communication module (85) configured to transmit the message to a remote device via a radio frequency data link.

A patient support apparatus for supporting a patient includes first, second, and third transceivers mounted at first, second, and third locations, respectively. A controller is adapted to use radio frequency communication between the first, second, and third transceivers and a first device—such as a display device, a fixed locator, and / or a vital sign sensor—to determine a position of the first device relative to the patient support apparatus. The controller is further adapted to send data to a display device if the first device is positioned inside a predetermined volume of space, and to not send the data to the display device if the first device is positioned outside of the predetermined volume of space. The patient support apparatus may also selectively accept and communicate with a removable cartridge that includes a vital sign port adapted to receive a plug of a cable from a vital sign sensor.

This utility model relates to the field of microwave radio frequency technology and discloses an adapter for connecting a radio frequency connector to a microstrip connector. It includes a radio frequency connector body and a connector head disposed on one side of the radio frequency connector body, the electrical output terminal of which is electrically connected to a mounting plate. A metal platform is disposed on one side of the mounting plate, the inner cavity of which houses the microstrip body. This utility model, by providing a disassembly mechanism, facilitates the disassembly of the metal platform. When the adapter needs cleaning, component replacement, or troubleshooting, the metal platform can be quickly disassembled, thereby simplifying the maintenance process and improving work efficiency. The easy-to-disassemble design reduces the risk of component damage due to improper disassembly, thus lowering maintenance costs. Furthermore, the easily disassembled metal platform facilitates timely repair and replacement when necessary, ensuring the stable operation of the adapter and the entire radio frequency communication system.

The application relates to a satellite communication hetero-frequency hetero-circular polarization common-aperture antenna, belonging to the radio frequency communication field, which comprises a dielectric plate assembly, an antenna radiation unit assembly and a SIW feeding structure assembly; the dielectric plate assembly comprises three layers of dielectric plates and provides support for the whole antenna; the antenna radiation unit assembly comprises one low-frequency antenna radiation unit and four high-frequency antenna radiation units, the low-frequency antenna radiation unit is arranged in the middle of the four high-frequency antenna radiation units, and the four high-frequency antenna radiation units adopt a rotating layout; the SIW feeding structure assembly is used for feeding the low-frequency antenna radiation unit and the high-frequency antenna radiation unit. The application can guarantee the normal work of the high-frequency and low-frequency antenna radiation units in the working frequency bands, and present filtering characteristics in the non-working frequency bands, so that the port isolation between the antenna units of different frequency bands is improved. The filtering effect of the SIW feeding cavity can be adjusted by changing the size of the SIW feeding cavity.

This specification provides a robot swarm control system and method. The robot swarm control system includes a swarm controller and multiple robots. When a target robot among the multiple robots forms a temporary wired communication link with the swarm controller via a physical connection interface, it reads the controller identification information corresponding to the swarm controller and establishes a communication identity binding relationship with the swarm controller based on the controller identification information. A wireless channel for bidirectional communication with the swarm controller is established based on the communication identity binding relationship. The wireless channel is constructed based on a radio frequency communication chip and operates in the target frequency band. When the swarm controller establishes wireless channels with each of the multiple robots, it responds to robot control operations by sending control commands to each robot through the wireless channels established with each robot. The target robot verifies the control commands through a hardware protocol layer. If the verification passes, it executes the motion task associated with the control commands.

This invention discloses a biomimetic forehead conformal antenna and its application in robot broadband communication, belonging to the field of robot communication antenna technology. The antenna is an arc-shaped conformal rigid structure mimicking the human forehead, consisting of a radiating layer, an impedance-gradient dielectric layer, and a metal grounding support layer from top to bottom. The radiating layer integrates multi-band radio frequency communication radiating units; the impedance-gradient dielectric layer adopts a fully passive gradient structure, achieving a voltage standing wave ratio (VSWR) ≤1.6 within the 2.4GHz to 6GHz frequency band; the antenna is fixedly integrated with the robot head through the metal grounding support layer. This invention eliminates the need for active tuning circuitry, features low bulge, low wind resistance, high isolation, and high gain, and supports concurrent communication across all frequency bands including WiFi, 5G Sub-6G, UWB, and Bluetooth.