23 results about "High power amplifier" patented technology

The invention provides a control method and system and a vehicle, the method can be applied to the field of intelligent vehicles, the method can be applied to a controller, the method comprises the steps that a first modulation signal and N first voltage values are obtained, the first modulation signal is a modulation signal obtained by modulating an audio signal, and N is a positive integer; the N first voltage values are associated with the first modulation signal, and the N first voltage values are voltage values when the N power supply circuits supply power to the M amplification circuits; n second modulation signals are determined according to the first modulation signal and the N first voltage values, M first audio modulation signals are output to the M amplification circuits according to the N second modulation signals, and the oscillation degree of the duty ratio of the M first audio modulation signals is lower than that of the first modulation signal. By means of the method, the vehicle-mounted power amplifier product can achieve higher power amplifier efficiency in a high-power scene, and distortion of the whole signal is reduced.

The invention provides a radio frequency suppression circuit, a power amplifier and a communication terminal, relates to the technical field of radio frequency communication, and solves the problem that communication is affected due to the fact that a radio frequency redundant system is prone to mismatch risk during waveguide switch switching in the prior art. According to the scheme, the control voltage is generated through the radio frequency suppression circuit to increase the attenuation amount of the adjustable attenuator in the radio frequency link of the power amplifier, so that the output power of the power amplifier is reduced when the waveguide switch is switched, the mismatching risk is effectively avoided, the waveguide switch and the power amplifier can be effectively protected, and the service life of the power amplifier is prolonged. And normal work of a communication link can be guaranteed.

A particular aspect of the present disclosure comprises a first amplifier (402-1), a first power supply having an output coupled to the supply input of the first amplifier (402-1) and configured to supply a first power to the supply input of the first amplifier (402-1), a second amplifier (402-n), a second power supply having an output coupled to the supply input of the second amplifier (402-n) and configured to supply a second power to the supply input of the second amplifier (402-n), and a third amplifier (406) having a supply input coupled to the first and second power supplies, wherein the first and second power supplies are further configured to supply a third power to the supply input of the third amplifier, This applies to amplification circuits (400) that include the following.

The application discloses a CE-OFDM communication and sensing integrated anti-nonlinear DOA estimation method, belongs to the field of communication sensing, and comprises the following steps: generating a 0dB peak-to-average power ratio CE-OFDM signal at a transmitting end, so that the CE-OFDM signal can drive a power amplifier to work in a saturation region, thereby avoiding nonlinear distortion while ensuring high power amplifier efficiency. A uniform linear array is used to receive signals at a receiving end, the signals are decomposed into a frequency domain through discrete Fourier transform, narrowband MVDR spatial spectra are independently calculated for each subcarrier frequency point, wideband spatial spectra are obtained through non-coherent fusion, and finally high-precision DOA estimation is realized through peak value searching. The application fundamentally suppresses power amplifier nonlinear distortion by using the constant envelope characteristic of CE-OFDM, avoids eigenvalue decomposition and source number estimation by combining the IMVDR algorithm, supports frequency point level parallel calculation, and realizes high-precision and low-complexity DOA estimation while ensuring communication reliability.

The present disclosure provides a system for radiation immunity testing, comprising a signal generator (320), a power amplifier (330) and an antenna (340), characterized in that the signal generator (320) and the power amplifier (330) are disposed on a common rack (360) which can be arranged in a laboratory (100) for radiation immunity testing; when testing, the antenna (340) is also disposed on the common chassis (360) and is connected to the power amplifier (330) by means of a coaxial cable (354). Energy loss on a coaxial cable can be reduced, so that use of a high-cost high-power amplifier can be avoided.

The application provides a radio frequency power amplifier circuit and a radio frequency chip, wherein the radio frequency power amplifier circuit comprises input matching circuit, first stage amplifier, first inter-stage matching circuit, second stage amplifier, second inter-stage matching circuit, third stage amplifier and output matching circuit which are connected in sequence; the radio frequency power amplifier circuit further comprises control module, direct current power supply module, first bias circuit, second bias circuit and third bias circuit; the first bias circuit comprises bias input matching circuit, power amplifier, first inductor, first bias unit, bias output matching circuit, power detection circuit, voltage control circuit and second bias unit. The application can improve the robustness of the radio frequency high power amplifier circuit.

The invention discloses an adaptive bias broadband high-power amplifier, and relates to the technical field of radio frequency integrated circuits. The amplifier comprises an active self-adaptive bias module, an amplifier driving stage module, an inter-stage high-coupling-coefficient transformer matching network module, an amplifier power stage module and a high-power electrostatic discharge output matching common module. Through the active self-adaptive bias module, the interstage high-coupling-coefficient transformer matching network module and the high-power electrostatic discharge output matching common module, combined innovation of self-adaptive bias, broadband and electrostatic discharge multiplexing of the high-power amplifier is realized; a high-power amplifier with the performance superior to that of a traditional gallium arsenide process and the cost directly close to that of a CMOS is realized on a silicon-based platform, and a core technical support is provided for a 5G / 6G radio frequency chip.

This utility model discloses a high-power, low-phase-noise cascaded amplifier, including a low-noise amplifier PA5 disposed at the input end and a high-power amplifier PA6 disposed at the final stage; a first attenuation unit is disposed between the low-noise amplifier PA5 and the input end, and a second attenuation unit is disposed between the low-noise amplifier PA5 and the high-power amplifier PA6, and a connection circuit corresponding to the attenuation unit is also included; this solution cascades the low-noise amplifier and the high-power amplifier to form a cascaded amplification link that satisfies both low phase-noise performance and high power performance, thereby achieving better performance indicators while meeting performance requirements.

The invention discloses a space-borne short message terminal air and ground docking test system and method constructed based on an indoor signal link. The outdoor receiving antenna is installed outdoors and used for receiving outdoor Beidou satellite signals. The indoor L-band low-power amplifier is installed indoors and used for amplifying outdoor Beidou satellite signals transmitted by the outdoor receiving antenna; the indoor transmitting antenna is installed indoors and is used for forwarding the amplified Beidou satellite signal to an indoor to-be-tested satellite Beidou terminal; the indoor receiving antenna is installed indoors and used for receiving signals transmitted by the satellite Beidou terminal to be tested. The outdoor L-band high-power amplifier is installed outdoors and used for amplifying signals transmitted by the indoor receiving antenna and emitted by the indoor satellite Beidou terminal to be tested. The outdoor transmitting antenna is installed outdoors and is used for forwarding the amplified signal transmitted by the to-be-tested satellite Beidou terminal to an outdoor Beidou satellite; the accuracy and the reliability of the test are improved, and many limitations of external field test are overcome at the same time.

This invention proposes a 2W-level Ka-band high-power amplifier. The amplifier employs a two-stage drive and eight-channel power combining architecture, combining a bandpass parallel power combining network with an optimized matching network. This achieves 2W-level saturated output power while maintaining high efficiency, linearity, and stability. The invention mainly consists of a power distribution input matching network, an input amplification stage, a drive amplification stage, an output amplification stage, and a power combining output matching network. Two-stage drive pushes the final stage output power to saturation, and an eight-channel tree-shaped power combining network achieves efficient power superposition, effectively solving the technical challenges of limited single-tube power, high high-frequency loss, and low combining efficiency in the Ka-band.

The application discloses a kind of self-adapting bias wideband high-power amplifier, it is related to radio frequency integrated circuit technical field.The amplifier includes active self-adapting bias module, amplifier drive stage module, interstage high coupling coefficient transformer matching network module, amplifier power stage module and high-power electrostatic discharge output matching common module.The application is realized by the active self-adapting bias module, interstage high coupling coefficient transformer matching network module and high-power electrostatic discharge output matching common module of setting, the combination innovation of high-power amplifier self-adapting bias, wideband and electrostatic discharge multiplexing is realized, performance surpasses traditional gallium arsenide process on silicon-based platform, cost is the high-power amplifier of CMOS, and 5G / 6G radio frequency chip provides core technical support.

The invention provides a combining system of a high-power amplifier, and relates to the technical field of electronics, and the combining system of the high-power amplifier comprises a shunt unit, n bridge combining units and a space combining unit. The n output ends of the shunt unit are electrically connected with the input ends of the n bridge combining units respectively, and the output ends of the bridge combining units are electrically connected with the input end of the space combining unit. The branching unit divides the target signal into n paths of first signals with first preset power; each bridge combining unit carries out bridge plane power synthesis on the respective first signal and outputs a second signal, and the bridge plane power synthesis comprises signal distribution, amplification and synthesis; and the space combining unit performs space power combination on the n second signals and outputs a target power signal. According to the invention, the technical problem of how to reduce the power loss of power synthesis and the realization difficulty in related technologies is solved.

The application provides an ultra-wideband high-power amplifier and transmitter, wherein the power amplifier comprises a signal input end for receiving an input signal, an input matching network connected with the signal input end at one end and with a gate of a GaN power amplifier chip at the other end, for matching the impedance between the gate of the GaN power amplifier chip and the signal input end, an output matching network connected with a drain of the GaN power amplifier chip at one end and with a signal output end at the other end, for matching the impedance within an ultra-wideband, an input bias network comprising a filter capacitor, connected with the gate of the GaN power amplifier chip at one end and with an external gate power supply at the other end, for filtering and bypassing the gate power supply, and an output bias network comprising a filter capacitor, connected with the drain of the GaN power amplifier chip at one end and with an external drain power supply at the other end, for filtering and bypassing the drain power supply. The frequency of the power amplifier can cover 0.2G-2GHz.

An ultra-wideband radio frequency (RF) apparatus for combining and / or dividing RF signals. RF apparatus includes a circuit board, a communication cable that operably engages with the circuit board, at least two transmission lines that are formed on the circuit board and operably engages with the communication cable, and at least two connectors that operably engages with the at least two transmission lines. The RF apparatus is operable in a first configuration and a second configuration. When the RF apparatus is provided in the first configuration, the RF apparatus is operable to divide a first RF signal into at least two RF signals. When the RF apparatus is provided in the second configuration, the RF apparatus is operable to combine the at least two RF signals into a second RF signal. The RF apparatus is capable of achieving a low insertion loss less than 1 dB over a bandwidth greater than 20:1.

The LIDAR system includes an optical integrated circuit including a laser configured to output a beam, a modulator configured to receive the beam and modulate the beam to produce a modulated beam, an amplifier configured to receive the modulated beam from the modulator and produce an amplified beam, the amplifier having an active layer configured to dissipate heat and an alternating lattice or periodic lattice or superlattice structure, and a transceiver chip coupled to the optical integrated circuit and configured to emit the amplified beam and receive the beam reflected from the target.

This invention belongs to the field of radio frequency communication technology and discloses a microwave wireless transmission system and a high-power amplifier. The high-power amplifier includes: a transistor; an output matching network, the input of which is connected to the output of the transistor; the output matching network includes: a coupling line, which is composed of a coupled first transmission line and a coupled second transmission line; the two ends of the first transmission line are a first port and a second port, respectively, and the two ends of the second transmission line are a third port and a fourth port, respectively; wherein, the first port is connected to the input, and the third port is open-circuited; an open-circuit stub is connected to the second port; a short-circuit stub is connected to the fourth port; and an output load is connected to the fourth port.

The present invention provides a power control system and control method, including a signal control circuit and a power amplifier gate voltage control circuit respectively connected to the signal input terminals of a first amplifier, a second amplifier, and a third amplifier; the signal output terminal of the first amplifier is connected to the signal output terminal of the second amplifier, and the signal output terminal of the third amplifier is connected to the signal output terminal after the first and second amplifiers are connected; the signal control circuit is used to control the phase difference of the input signals of the first, second, and third amplifiers, and the power amplifier gate voltage control circuit is used to control the operating states of the first, second, and third amplifiers. By controlling the phase difference of the input signals of the first, second, and third amplifiers or the operating states of the first and third amplifiers, the power control system is controlled to be in a high-efficiency operating state. The present invention improves the high power amplifier efficiency of the power control system.

An RF transceiver (100) which has a single RF antenna port (20) for a receive path, and two transmit paths, a balun (10) including a primary winding (11) and a secondary winding (12), the latter coupled to the RF antenna port (20), the receive path including a low noise amplifier (LNA), the first transmit path including a high power amplifier (HPA), switches (S1, S2), and capacitors (C1, C2), the second transmit path including a low power amplifier (LPA) and a switch (S3).

The invention provides a radio frequency power amplification circuit and a radio frequency chip, and the radio frequency power amplification circuit comprises an input matching circuit, a first-stage amplifier, a first inter-stage matching circuit, a second-stage amplifier, a second inter-stage matching circuit, a third-stage amplifier and an output matching circuit which are sequentially connected. The radio frequency power amplification circuit further comprises a control module, a direct current power supply module, a first bias circuit, a second bias circuit and a third bias circuit. The first bias circuit comprises a bias input matching circuit, a power amplifier, a first inductor, a first bias unit, a bias output matching circuit, a power detection circuit, a voltage control circuit and a second bias unit. According to the invention, the robustness of the radio frequency high-power amplification circuit can be improved.

A LIDAR sensor system comprising: a laser configured to output a light beam; a modulator configured to receive the light beam and modulate the light beam to generate a modulated light beam; a photonic integrated circuit having an amplifier coupled to receive the modulated light beam from the modulator and generate an amplified light beam, the amplifier having an active layer and an alternating or periodic or superlattice structure configured to dissipate heat; and a transceiver chip coupled to the photonic integrated circuit, the transceiver chip configured to transmit the amplified light beam and receive a reflected light beam from a target.

Certain aspects of the present disclosure are directed towards an amplification circuit. The amplification circuit generally includes: a first amplifier; a first power supply having an output coupled to a supply input of the first amplifier and configured to provide a first power to the supply input of the first amplifier; a second amplifier; a second power supply having an output coupled to a supply input of the second amplifier and configured to provide a second power to the supply input of the second amplifier; and a third amplifier having a supply input coupled to the first power supply and the second power supply, the first power supply and the second power supply being further configured to provide a third power to the supply input of the third amplifier.

The present disclosure relates to viral molecule network architecture and design, and in particular, to a wireless communication device, a high-speed, high-capacity private mobile network system, and a method of using millimeter wave RF [band in the range of about 30 to 3300 GHz, a method for transmitting information streams to end users across a sub-network by using a convolute TWA ultra-high power amplifier repeating device across cities, suburbs and villages around the world in a specifically designed grid manner, the present invention relates to a wireless communication system that receives and re-amplifies and re-transmits V-ROVER, Nano-ROVER, Atto-ROVER, proton switch, core switch RF signals, and uses a specific contact device equipped with an Attobahn IWIC chip. The present disclosure performs the aforementioned functions without using IEEE 802LAN, ATM, or TCP / IP connection-oriented standards and protocols.

The present disclosure relates to viral molecule network architecture and design, and in particular, to a wireless communication device, a high-speed, high-capacity private mobile network system, and a method of using millimeter wave RF [band in the range of about 30 to 3300 GHz, a method for transmitting information streams to end users across a sub-network by using a convolute TWA ultra-high power amplifier repeating device across cities, suburbs and villages around the world in a specifically designed grid manner, the present invention relates to a wireless communication system that receives and re-amplifies and re-transmits V-ROVER, Nano-ROVER, Atto-ROVER, proton switch, core switch RF signals, and uses a specific contact device equipped with an Attobahn IWIC chip. The present disclosure performs the aforementioned functions without using IEEE 802LAN, ATM, or TCP / IP connection-oriented standards and protocols.