268 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.

The invention relates to a lower frequency band radiating element with reduced scattering of higher frequency band radiation. A radiating element includes: a feed stem printed circuit board including a first RF transmission line and a second RF transmission line; a first dipole radiator coupled to the first RF transmission line; and a second dipole radiator coupled to the second RF transmission line. The first dipole radiator comprises a first dipole arm and a second dipole arm, and the second dipole radiator comprises a third dipole arm and a fourth dipole arm. A first amount of coupling between the first dipole arm and the third dipole arm exceeds a second amount of coupling between the first dipole arm and the fourth dipole arm.

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.

A reflector, intended to form an integral part of a device for transmitting and receiving radio-frequency signals, for a gesture detector controlling automatic opening of a motor-vehicle hatch. The reflector including a reflecting plate, capable of reflecting a radio-frequency beam; at least one fastening tab, each fastening tab being integrally formed with the reflecting plate, and each fastening tab being configured to be inserted into a respective orifice passing through a thickness of a printed circuit board, and to be soldered to the printed circuit board at the orifice. The printed circuit board includes at least one radio-frequency antenna.

The invention discloses a laser-driven phase change radio frequency switch, which comprises a metal reflecting layer and a phase change layer, and is characterized in that laser heats the phase change layer through reflected light of the metal reflecting layer to change the state of the phase change layer; the first radio frequency transmission layer and the second radio frequency transmission layer are connected when the phase change layer is changed from a high-resistance state to a low-resistance state, and the first radio frequency transmission layer and the second radio frequency transmission layer are disconnected when the phase change layer is changed from the low-resistance state to the high-resistance state. Wherein the first electrode in the first radio frequency transmission layer is the input end of the phase change radio frequency switch, and the second electrode in the second radio frequency transmission layer is the output end of the phase change radio frequency switch. According to the phase change radio frequency switch disclosed by the invention, the phase change material is directly heated through laser, stray capacitance caused by a micro heater is eliminated, and insertion loss is reduced.

A system and method for measuring and analyzing power flow parameters in RF-based excitation systems for semi-conductor plasma generators. A measuring probe is connected to an RF transmission line for receiving and measuring voltage and current signals from the transmission line. A high-speed sampling process converts the measured RF voltage and current signals into digital signals. The digital signals are then processed so as to reveal fundamental, intermodulation, triple beat, and harmonic amplitude and phase information corresponding to the original RF signals. The measurement system may also inhibit arcing by detecting when the amplitude of the intermodulation or triple beat signal exceeds a predetermined threshold, and indicating an alarm and / or reducing the power of the plasma generator when the predetermined threshold is exceeded.

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.

The application discloses a novel W-waveband waveguide sealing structure, which adopts a three-dimensional stacked structure and is divided into four layers, wherein the two outer layers are clamps and the two middle layers are sealing modules; a dielectric substrate is welded in a cavity in the middle of the sealing modules by adopting a three-layer welding structure. The novel W-waveband waveguide sealing structure can be directly used for the connection of a real measurement or radio frequency transmission system without other conversion and transition structures; meanwhile, the operability of the process is fully considered, and the assembly error is less than 5 microns. The novel W-waveband waveguide sealing structure can realize the performance of air-tight packaging, wide bandwidth and low insertion loss.

The utility model provides a C-band dual-channel emission multifunctional module based on HTCC packaging, which relates to the technical field of microwave radio frequency circuits, and comprises an HTCC multilayer board, and the HTCC multilayer board comprises a top layer circuit, a second layer circuit, a third layer circuit, a fourth layer circuit, a fifth layer circuit, a bottom layer circuit and an insulating medium layer arranged between the adjacent circuits which are sequentially arranged from top to bottom; the bottom-layer circuit is used for grounding, the second-layer circuit and the fourth-layer circuit are both vertically interconnected with the bottom-layer circuit, the third-layer circuit and the fifth-layer circuit are both vertically interconnected with the top-layer circuit, the third-layer circuit is provided with a radio frequency transmission line and a low-frequency signal line, and the fifth-layer circuit is provided with a low-frequency signal line; the top layer circuit comprises a power divider, two multifunctional chips, two power amplifier chips, a monitoring unit and a control unit. According to the utility model, the assembly and debugging difficulty can be reduced, the use reliability is improved, and the practicability is stronger.

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.

The invention discloses a W-band multifunctional integrated packaging module, and aims to improve the integration level and radio frequency performance of a W-band radio frequency front end and reduce the assembly complexity and cost of a radar and a communication system. The packaging module comprises a component layer, a packaging shell, a radio frequency transmission layer and a fine pitch micro bump vertical transmission layer. A low-cost packaging technology is adopted, a plurality of radio frequency front-end chips and capacitors based on traditional gold wire bonding are packaged into an integrated module, the integrated module can be applied to various W-band microwave radio frequency front-end application schemes, and the integrated module has the advantages of being high in integration, small in size, low in cost and the like.

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.

A broadcast signal transmission apparatus according to one embodiment of the present invention comprises: a first RF subframe signal generation unit for generating at least one first RF signal; a second RF subframe signal generation unit for generating at least one second RF signal; a first RF unit for generating, on the basis of at least a portion of the at least one first RF signal, at least one first RF transmission signal corresponding to a first RF channel from among the first RF channel and a second RF channel, which are channel-bonded; and a second RF unit for generating, on the basis of at least a portion of the at least one second RF signal, at least one second RF transmission signal corresponding to the second RF channel.

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.

An audio device, such as a microphone, may include a shield adapted to shield one or more components of the audio device from electromagnetic interference (EMI). The shield may be a metallic mesh structure that allows for audio to be processed through the shield while blocking electromagnetic radiation, such as radio-frequency (RF) electromagnetic radiation from RF transmissions from one or more wireless devices. The microphone may be adapted to engage and secure the shield with one or more components of the audio device (e.g., the housing). This advantageously improves the audio quality and performance by blocking or suppressing the electromagnetic radiation and resulting EMI.

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.

A vacuum assembly may include a vacuum chamber housing, a transport device for transporting a substrate along a transport path within the vacuum chamber housing, a plasma source having a plasma source housing in which a cavity is provided, an electrode disposed in the vacuum chamber housing and adjacent the plasma source, and a radio frequency transmission device that ohmically couples the plasma source housing to the electrode. The plasma source may be adapted to form a plasma to which the transport path is exposed by the cavity.