14 results about "High power amplifier" patented technology

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 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.

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 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.

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.

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.