6 results about "Microwave amplifiers" patented technology

This application relates to an integrated filtering and amplification device for quantum computing measurement and control, comprising: a device housing, a circuit board, a front-end attenuation component, a front-end bandpass filter component, a microwave amplification component, a rear-end attenuation component, and a rear-end bandpass filter component. The front-end bandpass filter component, the front-end attenuation component, the microwave amplification component, the rear-end attenuation component, and the rear-end bandpass filter component are sequentially connected to the circuit board and are all integrated within the device housing. By integrating a microwave front-end module with a bandpass filter, attenuator, and microwave amplifier, the complexity of external circuitry is greatly reduced. Furthermore, the integrated front-end module is small in size and can be directly integrated into electronic devices, allowing the measurement and control pulses generated from the electronic devices to be directly connected to the dilution refrigerator, greatly simplifying external wiring and improving system reliability.

A self-excitation microwave sensor suitable for non-destructive testing of metal mesh film, belonging to microwave sensor technology, comprising a resonant sensing structure, a microwave amplifier, a phase shift element, a band-pass filter, a radio frequency detector, a digital-to-analog converter and a microprocessor; wherein the resonant sensing structure, the microwave amplifier, the phase shift element and the band-pass filter form a self-excitation oscillation loop, the resonant sensing structure has a band-pass characteristic, is located in the feedback branch of the loop, the resonant frequency thereof is consistent with the center frequency of the band-pass filter, and the loop gain and the phase shift satisfy the self-excitation oscillation condition at the frequency; by reasonably setting the gain of the microwave amplifier and collecting the self-excitation oscillation signal power in real time, the sensor can realize detection of sub-millimeter width crack damage and identification of high square resistance samples, has high detection sensitivity, compact structure, small volume and low cost, does not need other external microwave analysis instruments, and can be applied to on-site non-destructive testing of metal mesh film.

A microwave treatment device according to one aspect of the present disclosure includes a heating chamber, a microwave generator, an amplifier, a feeder, a detector, a controller, and a storage. The microwave generator generates a microwave having an arbitrary frequency in a predetermined frequency band. The amplifier amplifies the microwave and outputs the amplified microwave as incident microwave power. The feeder supplies the incident microwave power to the heating chamber. The detector detects the incident microwave power and reflected microwave power that returns from the heating chamber to the feeder. The storage stores the incident microwave power and the reflected microwave power in association with the frequency of the microwave and time elapsed since the start of heating. The controller causes the microwave generator to execute a frequency sweep over the predetermined frequency band.

This invention provides a sensitivity-enhanced temperature measurement device based on an optoelectronic oscillator, comprising: a laser, an intensity modulator, a delay line interferometer, a sensitive arm fiber optic unit located in the space where the signal to be measured is located, a reference arm fiber optic unit, a photodetector, a microwave amplifier, a bandpass filter, a power divider, and a frequency measurement section. The intensity modulator generates an optical signal containing two frequency components: a carrier wave f0 and a first-order single-sideband wave f1. The delay line interferometer then separates these two frequency components, allowing them to propagate separately along the reference arm and sensitive arm fibers. These components are then returned to the delay line interferometer and combined to output an optical signal whose phase contains the temperature signal to be measured. The phase change of the optical signal caused by the temperature signal to be measured is then converted into a frequency change in the microwave signal output by the optoelectronic oscillator. This invention also provides a sensitivity-enhanced temperature measurement method. The device provided by this invention can effectively improve the sensitivity of temperature detection.

This invention relates to a core microwave amplifier chip application verification system and method for aerospace applications, belonging to the field of electronic technology. The application verification method and system of this invention combine the inherent characteristics of the device with the requirements of aerospace applications, constructing a complete set of methods and systems for microwave amplifier application verification, which can meet the needs of microwave amplifier aerospace application verification. This invention develops targeted tests for the inherent characteristics, process features, and common failure modes of microwave amplifiers. For example, it designs stability evaluation for amplifier self-excited oscillation, hydrogen resistance evaluation for hydrogen effects, anti-mismatch capability evaluation for power reflection caused by output mismatch, and lifetime assessment for the impact of various operating conditions on lifetime, ensuring the efficiency and relevance of the verification.

The application belongs to the technical field of laser radar, and discloses a parallel linear frequency modulation continuous wave laser radar ranging and velocity measuring system, wherein laser of different wavelengths is emitted by a narrow linewidth single frequency fiber laser array, enters an electro-optic modulator after passing through a wavelength division multiplexer, and laser carrier output after passing through a fiber coupler is modulated by an arbitrary waveform generator and a microwave amplifier through the electro-optic modulator; the modulated light is divided into two beams of light by a beam splitter, one is a local oscillation light, and the other is a detection light; the detection light enters a fiber loop after power amplification by an EDFA amplifier, is emitted to an object after dispersion by a three-prism, and the reflected detection light enters the loop after entering the three-prism, mixes with the local oscillation light to enter a fiber coupler, and the light after the wavelength division multiplexer is obtained by a photoelectric detector to obtain an intermediate frequency signal, and then real-time N-way parallel fast Fourier transform is carried out to realize N-way distance and speed synchronous measurement. The application improves laser radar data acquisition rate and image refresh rate, and expands the field of view angle of the laser radar.