172 results about "Rf transmission" patented technology

The invention discloses an image analysis method and system for quality control traceability of a satellite navigation board, and relates to the technical field of image processing. The method comprises the following steps: synchronously acquiring an image and three-dimensional point cloud data of a radio frequency transmission line area through a high-resolution area array CCD camera and a laser contourgraph; acquiring a transmission line contour based on image identification, and constructing a three-dimensional radio frequency line model through point cloud fitting; detecting the line width and the distance to the ground plane by using the model, and calculating the impedance prediction complexity in combination with a data acquisition error; dynamically calling a characteristic impedance prediction engine based on the complexity to obtain a predicted characteristic impedance sequence; and quality defect judgment is carried out, and traceability control is carried out on defective products. According to the method, a complete technical chain from geometric dimension detection to electrical performance evaluation is established, hidden defects which are difficult to find by a traditional method can be effectively identified, and the quality control precision and the product yield of the satellite navigation board are improved.

An impedance matching network for a radio frequency (RF) transmission system can include first port for coupling to a first transistor differential pair. The network can further include a second port for coupling to a second transistor differential pair. The network can further include a matching network connected to the first port and the second port, the matching network comprised of a pair of coupled lines. Other aspects are described.

The invention provides a radio frequency power amplification circuit and an adjusting method thereof. The radio frequency power amplification circuit comprises an image transmission module, a first radio frequency switch, a radio frequency power amplification module, a radio frequency low-noise amplifier, a second radio frequency switch and an antenna module, the radio frequency power amplification module comprises a GaN radio frequency power amplifier, the image transmission module is connected with an RFC of the first radio frequency switch, the GaN radio frequency power amplifier is connected between RF1 channels of the first radio frequency switch and the second radio frequency switch, and the radio frequency low noise amplifier is connected between RF2 channels of the first radio frequency switch and the second radio frequency switch. The antenna module is connected with the RFC of the second radio frequency switch; the two radio frequency switches are configured to control a radio frequency signal transmitted by the image transmission module to flow to the GaN radio frequency power amplifier in a radio frequency transmitting state, and the radio frequency signal is transmitted to the antenna module after being amplified; in the radio frequency receiving state, radio frequency signals received by the antenna module are controlled to flow to the radio frequency low-noise amplifier and are sent to the image transmission module after being amplified. According to the invention, ultra-long distance image transmission of the unmanned equipment can be realized.

Aspects of the disclosure related to devices, wireless communication apparatuses, methods, and other aspects of passive multiple input multiple output. In some aspects, an apparatus is provided that includes a first radio frequency (RF) transmission line having a first terminated with a quarter wavelength grounded transmission line, and a first array of antennas including a plurality of antenna elements. The apparatus also includes a switch array including a corresponding switch for each antenna element of the plurality of antenna elements of the first array of antennas, to selectively connect each antenna element to the first RF transmission line, and path lengths selectable by the switches at half wavelength distances for passive transmission. The apparatus also includes or more lens elements configured to modify wireless inputs signals to the first array of antennas and to modify wireless output signals from the first array of antennas.

A method performed by a network device for enabling and disabling a group of Ambient Internet of Things (AIoT) devices in a communication network includes provisioning the group of AIoT devices with a group identifier (ID), a group key, and a first stop code, transmitting, to the group of AIoT devices, a second stop code and a third stop code that are associated with the group ID and secured using the group key, and determining whether to disable the RF transmission capability of the group of AIoT devices based on the second stop code and the third stop code.

The application provides a ka-band ultra-wideband miniaturized frequency converter, which comprises a tube shell, two multilayer printed boards, radio frequency BGA balls, ground BGA balls and a ka-band wideband down-conversion circuit, the tube shell encapsulates the two multilayer printed boards, the radio frequency BGA balls and the ground BGA balls in a system level of the ka-band wideband down-conversion circuit, the multilayer printed boards are vertically interconnected through radio frequency transmission lines, have through holes at the same positions in the vertical direction, the radio frequency BGA balls are arranged below the through holes, the ground BGA balls are arranged around the radio frequency BGA balls at equal intervals, the radio frequency signals between the two multilayer printed boards in the vertical direction are transmitted through the radio frequency BGA balls and the ground BGA balls, the ka-band wideband down-conversion circuit is arranged on the surface of the two multilayer printed boards, and the ka-band wideband down-conversion circuit is used for down-converting the input ka-band ultra-wideband radio frequency signals to L-band intermediate frequency signals. The application solves the technical problem of miniaturizing the ka-band ultra-wideband frequency converter through the vertical interconnection of the multilayer printed boards through the radio frequency transmission lines, the radio frequency BGA transmission, the multilayer stacking process of the radio frequency printed boards and the ka-band wideband down-conversion circuit.

The application relates to a high-performance radio frequency modulation light emitting module, which comprises a radio frequency light modulation part, a circuit module and a shell module; the radio frequency light modulation part comprises a laser coupling module, a modulator module, an optical fiber assembly and a radio frequency transmission module; the laser coupling module is used for outputting an optical signal and coupling the output optical signal into the modulator module; the modulator module is used for radio frequency modulation of the optical signal and coupling the modulated optical carrier radio frequency signal into the optical fiber assembly; the radio frequency transmission module is used for transmitting the radio frequency signal to the modulator module; the circuit module is used for realizing control, monitoring and power supply functions; and the shell module is used for separating the circuit module and the radio frequency light modulation part upwards and downwards and sealing and packaging the radio frequency light modulation part. The application constructs a radio frequency modulation light module with high reliability and high performance, and meets the requirements of wide long-distance radio frequency transmission. In addition, the structure meets the requirements of equipment miniaturization and high integration.

Provided is a technique for improving the accuracy of an electrical parameter determined using a sensor in a plasma processing device. The plasma processing device comprises a plasma processing chamber, a substrate supporting unit which is disposed within the plasma processing chamber and which includes an electrically conductive base and an electrostatic chuck disposed on the electrically conductive base, an RF power source which is electrically connected to the electrically conductive base via an RF transmission line, a sensor which is configured to detect at least one first electrical parameter at a node on the RF transmission line, a first storage unit which is configured to store a measurement result obtained by measuring the capacitance of the electrostatic chuck, and a control unit, wherein the control unit is configured to determine at least one second electrical parameter of a substrate on a substrate supporting surface on the basis of the at least one first electrical parameter detected by the sensor and the measurement result of the capacitance stored in the first storage unit.

A wafer processing system is provided. In one aspect, the wafer processing system includes a chamber body arranged to support a plurality of process chambers. The chamber body defines at least a portion of a trench formed within the chamber body. The wafer processing system also includes transmission lines disposed within the trench to electrically couple an output of a power supply with respective ones of a plurality of antennas disposed within respective ones of the plurality of process chambers.

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

A terminal device of a New Radio (NR) system and a corresponding method performed by the terminal device are provided. The method includes receiving, by RF reception circuitry of the terminal device, from a transmitting device while the terminal device resides in an enabled state or a disabled state, a command to permanently disable the terminal device; and transitioning, in response to receiving the command to permanently disable the terminal device, to reside in a permanently disabled state. When the terminal device resides in the enabled state, the RF reception circuitry of the terminal device and RF transmission circuitry of the terminal device are enabled. When the terminal device resides in the disabled state, the RF reception circuitry is enabled and the RF transmission circuitry is disabled. When the terminal device resides in the permanently disabled state, the RF reception circuitry and the RF transmission circuitry are disabled.

A lower electrode assembly and its plasma processing apparatus are disclosed. The lower electrode assembly includes: a base, comprising: a substrate temperature control component and a radio frequency transmission layer wrapped around the outer surface of the substrate temperature control component; the substrate temperature control component has a cooling channel, and the material of the substrate temperature control component has a first coefficient of thermal expansion; the material of the radio frequency transmission layer has a second coefficient of thermal expansion, the second coefficient of thermal expansion being greater than the first coefficient of thermal expansion, and the radio frequency transmission layer is a conductive material; and a ceramic layer disposed above the base for supporting the substrate. The lower electrode assembly, while satisfying radio frequency transmission and substrate temperature control, can reduce the possibility of damage to the lower electrode assembly.

The application discloses a kind of radio frequency power supply and semiconductor equipment.The radio frequency power supply includes: liquid cooling plate, power amplification module and with the output end of the power amplification module electrically connected first radio frequency transmission line;The first radio frequency transmission line includes first inner conductor, first insulating medium surrounding the first inner conductor and first outer conductor surrounding the first insulating medium;The first inner conductor and the first insulating medium are located in the liquid cooling plate;The liquid cooling plate around the first insulating medium is reused as at least part of the first outer conductor of the first radio frequency transmission line.The application provides a kind of radio frequency power supply and semiconductor equipment, can reduce the internal space of radio frequency power supply, make high-power radio frequency power supply to miniaturization direction development, also can quickly reduce the temperature of radio frequency transmission line for transmitting high-power radio frequency signal, improve the reliability of radio frequency power supply.

Systems, devices, and methods are provided for changing the power state of a sensor control device in an in vivo analyte monitoring system in various manners, such as through the use of external stimuli (light, magnetics) and RF transmissions.

This invention discloses a streaming computing engine system and method applicable to various scenarios, relating to the field of streaming computing technology. It includes: a mismatch assessment module for calculating the mismatch margin of the RF link based on the characteristic impedance of the RF transmission line, cable type tolerance, and the equivalent input impedance of the cellular module at the RF port; a thermal and humidity characteristic module for calculating the initial temperature difference of the metal plate penetrating the compartment in a metal control cabinet, and calculating the thermal conductivity enhancement ratio and moisture retention coefficient of the cold bridge in the condensation joint area on the metal plate penetrating the compartment; and a temperature compensation increment module for calculating the target compensation temperature increment of the metal plate penetrating the compartment based on the thermal conductivity enhancement ratio, moisture retention coefficient, and initial temperature difference of the cold bridge. This invention improves the accuracy of RF link health status determination.

Antennas having single or parallel printed circuit board-based feed stalks and base station antennas having such radiating elements. The single feed stalk can have two feed lines configured to feed radio frequency signals to respective dipole radiators. Each feed line can have twin ground lines on one side (primary surface) of the single feed stalk printed circuit board and a cooperating feed trace on an opposing side (opposing primary surface) that provide RF transmissions from a feed network to a dipole radiator. The twin ground lines for the first feed line can be on a different primary surface than the twin ground lines for the second feed line and one ground line of each twin line set can cross-over each other at a forward end portion of the feed stalk. The parallel feed stalk printed circuit board can provide two feed lines for a respective dual polarized radiating element.

The invention provides a self-detection calibration device and method of a radio frequency emission system, and relates to the technical field of communication, the device comprises a digital transmitter, a DPD module, a peak detection module, a peak processing module, a DPD feedback loop and an adaptive DPD algorithm module, and also comprises a DPD controller and a PSAT detection module. By adding the functions of dynamic PSAT monitoring and feedback, peak monitoring and protection, self-adaption of DPD training and the like, the real-time stability and safety of a radio frequency transmitting system can be effectively improved, it is guaranteed that DPD works in the optimal interval, the overall correction quality is improved, and EVM and ACPR of radio frequency signals are guaranteed.

An antenna designed for receiving satellite signals (e.g., GNSS or SDARS) comprises a first dielectric substrate having a conductive ground plane layer on a lower surface. A second dielectric substrate is arranged opposite an upper surface of the first dielectric substrate, with a first and a second helical antenna element embedded on an upper surface of the second dielectric substrate, each having origin ends separated by a gap. A plurality of conductive spots are arranged on at least one of the first or the second dielectric substrates between the upper surface of the first dielectric substrate and a lower surface of the second dielectric substrate.A multitude of conductive vias extend through the first dielectric substrate, connecting the conductive areas to the ground plane. A first and a second RF transmission line are each coupled to the origin ends.

This communication device including a plurality of radio frequency (RF) processing circuits for an antenna array is configured to: transmit first calibration signals having a first subcarrier spacing (SCS) through a plurality of RF transmission paths of the plurality of RF processing circuits; obtain the first calibration signals through a plurality of RF reception paths of the plurality of RF processing circuits; identify a bandwidth of a frequency domain having an amplitude variation of the first calibration signals less than a first threshold value and a phase variation of the first calibration signals less than a second threshold value, on the basis of amplitude information and phase information of the first calibration signals; and perform calibration by transmitting second calibration signals on orthogonal frequency division multiplexing (OFDM) symbols according to a second SCS corresponding to the bandwidth of the frequency domain from among a plurality of SCSs, wherein the second SCS indicates a frequency interval of each of the OFDM symbols, and a time interval of each of the OFDM symbols is inversely proportional to the second SCS.

This invention relates to the field of intelligent intercom technology and discloses an intelligent collaborative control method, system, and device integrating a helmet and a walkie-talkie. The method includes: collecting lens opening / closing status values, helmet posture angle data sets, wearing status indicators, and battery temperature values ​​from the intelligent helmet and constructing a set of scene tags and a set of status parameters; adjusting the DSP noise reduction cutoff frequency, noise suppression gain, VOX voice activation sensitivity, and RF transmission power; encapsulating the data into a Mesh heartbeat extension frame and broadcasting it to all online nodes in the network; receiving the Mesh heartbeat extension frame and selecting candidate relay nodes to perform route switching. This method solves the technical problem of communication interruption caused by passive disconnection and reconnection of the Mesh intercom network in obstructed scenarios such as curves, tunnels, and steep slopes, and ensures the continuity of communication links in multi-node cycling platoon scenarios.

The application provides a radiation transmission composite structure, a glass antenna and a vehicle. The radiation transmission composite structure is an integrated structure and has flexibility. The radiation transmission composite structure comprises a circuit layer structure, a radiation part, a feeding part, a conversion part, a transmission part and a connecting part. The connecting part is used for electrically connecting the transmission part and a vehicle-mounted OBU master control structure, and realizing radio frequency energy transmission between the transmission part and the vehicle-mounted OBU master control structure and impedance matching between the two. The transmission part is used for realizing closed transmission of radio frequency energy between the connecting part and the conversion part. The conversion part is used for realizing conversion of a radio frequency transmission line type between the transmission part and the feeding part. The feeding part is used for feeding radiation energy to the radiation part. The radiation part is used for radiating radio frequency energy to a preset target. The radiation part and the feeding part are arranged between outer glass and inner glass of the glass antenna, and the transmission part and the connecting part are arranged on a side of the inner glass away from the outer glass.

A radio transmission device according to an embodiment of the present disclosure may comprise: a radio frequency (RF) transmission interface for performing radio communication with a radio reception device; and a processor for determining a radio connection state between the radio transmission device and the radio reception device, and transmitting, to the radio reception device via the RF transmission interface, an afterimage compensation execution command for an afterimage compensation operation of a display when the radio connection state is determined to be a normal connection state and a display usage time of the radio reception device exceeds a preset time.

The invention discloses an electronic device, which comprises a middle frame in which a main circuit board and an auxiliary circuit board are arranged; one end of the radio frequency transmission line is electrically connected with the main circuit board, and the other end of the radio frequency transmission line is electrically connected with the auxiliary circuit board; the radio frequency transmission line is at least partially embedded in the middle frame, and the side, facing the main circuit board, of the radio frequency transmission line is flush with the inner surface of the middle frame. According to the scheme provided by the invention, the space occupied by the radio frequency transmission line in the middle frame can be reduced; the radio frequency transmission line and the middle frame share the thickness space of the middle frame, so that the electronic equipment can be lightened and thinned; meanwhile, the radio frequency transmission line is embedded in the middle frame, so that the stability of the radio frequency transmission line can be improved, and the complex assembly process is reduced; moreover, when the radio frequency transmission line is embedded in the middle frame, the radio frequency transmission line connected between the main circuit board and the auxiliary circuit board can be shortest by optimizing the path of the radio frequency transmission line in the middle frame, so that the loss of the radio frequency transmission line can be reduced.

The present invention relates to an RF energy transmission apparatus and an RF energy transmission method, wherein information about target RF transmission energy to be transmitted to the skin and information about the selection of a mode defining the form of RF energy transmission are received as input to generate pulse trains, and if a multi-mode is input, pulse trains of a first section and a second section, having a smaller frequency and a smaller total amount of energy than the first section, are generated to transmit RF energy in a non-invasive form to a patient's skin tissue, such that the patient's pain can be reduced, and simultaneously, RF energy can be controlled to ensure that a certain level of energy is accurately transmitted to a transmission location within the skin tissue.

The embodiment of the utility model relates to the technical field of communication, and discloses a radio frequency transmission system and electronic equipment. According to the utility model, the radio frequency transmission system comprises a transmission processor, a Bluetooth transmission transceiver module, an external WIFI Bluetooth front end module and a change-over switch; the transmission processor is respectively connected with the Bluetooth transmission transceiving module, the external WIFI Bluetooth front-end module and the change-over switch; the change-over switch is also respectively connected with the Bluetooth transmitting and receiving module and the external WIFI Bluetooth front-end module; the transmission processor is used for generating a transmitted signal and processing a received signal, and switching control is carried out on the Bluetooth transmitting and receiving module and the external WIFI Bluetooth front-end module through the change-over switch, so that the Bluetooth transmitting and receiving module and the external WIFI Bluetooth front-end module can transmit the WIFI and the Bluetooth simultaneously under the condition that the WIFI and the Bluetooth need to be transmitted simultaneously. The Bluetooth data can be received, transmitted and transmitted by starting the independent Bluetooth transmission receiving and transmitting module, and the WIFI transmission efficiency and the Bluetooth transmission efficiency of the equipment are improved.

The present application relates to the field of optical fiber communication technology, and particularly relates to a radio frequency signal optical transmission delay control method, transmitter parameters are set by a transmitter, receiver parameters are set by a receiver; the transmitter sends a PPS measurement pulse to the receiver after starting up; the receiver carries out delay measurement on the PPS measurement pulse, and carries out arithmetic average to obtain a delay value; the FIFO reading pointer is adjusted based on the delay value, and the PPS measurement pulse signal is switched to a transmission radio frequency signal, so that radio frequency signal transmission delay is stabilized; the method transmits a PPS pulse before transmitting a radio frequency signal, measures the delay value of the transmitted PPS pulse relative to a local PPS pulse at the receiver, then adjusts the reading position of the receiver FIFO, so that the radio frequency transmission delay is adjusted to a set value, the purpose of adjusting the radio frequency transmission delay is achieved, the method is suitable for a radio frequency signal digital optical fiber transmission system, has good versatility, can automatically adjust the radio frequency signal transmission delay, and ensures the stability of the radio frequency signal transmission delay.

Provided is an RF transmission member that makes it possible to homogenize the concentration distribution of plasma that is supplied toward a substrate side. The RF transmission member 10 comprises a cylindrical body 100 and a protective film 200 that covers an inner surface 130 of the cylindrical body 100. A first opening 111 is formed at one end of the cylindrical body 100, and a second opening 121 that has an inner diameter larger than that of the first opening 111 is formed at the other end of the cylindrical body 100. The inner surface 130 of the cylindrical body 100 includes a first region D1 and a second region D2 that is closer to the second opening 121 than the first region D1. In the RF transmission member 10, the surface roughness of the protective film 200 that covers the second region D2 is rougher than the surface roughness of the protective film 200 that covers the first region D1.

A phase shifter and a wireless communication device are provided. The phase shifter includes a first substrate, a radio frequency transmission line arranged on a side of the first substrate, and a bias line connected to the radio frequency transmission line. The bias line includes a first wire and a second wire. A sheet resistance of the second wire is greater than a sheet resistance of the radio frequency transmission line. The first wire and the radio frequency transmission line are connected and form an integrated structure. A line width of the first wire is less than a line width of the radio frequency transmission line. The second wire and the first wire form a lapping region in an extension direction of the first wire. In the lapping region, the second wire is arranged on a side of the first wire away from the first substrate.