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A Multi-Channel Broadband Microwave Radiometer with Self-calibration Function

A self-calibration, wideband technology, applied in measurement devices, instruments, spectrum analysis, etc., can solve problems such as time-consuming, complex calibration process, etc., and achieve the effects of low cost, simple calibration method and high reliability

Active Publication Date: 2018-02-13
SOUTHWESTERN INST OF PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a multi-channel broadband microwave radiometer with self-calibration function, which can solve the problems that calibration requires additional dual-temperature calibration sources, and the calibration process is complicated and time-consuming.

Method used

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  • A Multi-Channel Broadband Microwave Radiometer with Self-calibration Function

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Embodiment Construction

[0019] The present invention is described in detail below in conjunction with accompanying drawing and embodiment:

[0020] A multi-channel broadband microwave radiometer with self-calibration function, which includes a microwave synthesis source, a microwave frequency output controller, a local oscillator source isolator, a microwave frequency multiplier, a microwave mixer, a receiver isolator, and a high-pass filter device, band-stop filter, microwave antenna system, high-pass filter, the first group of broadband microwave amplification system, broadband power splitter, the first group of band-pass filter, the second group of microwave amplification system, the second group of power splitter, The second group of band-pass filters, detectors, video amplification system, data acquisition and analysis system and other components.

[0021] The output end of the microwave synthesis source is connected to the local oscillator end of the local oscillator source isolator, microwave ...

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Abstract

The invention belongs to a diagnostic device for nuclear fusion plasma, in particular to a multi-channel broadband microwave radiometer with self-calibration function, which consists of a microwave source, a controller, an isolator, a mixer, a filter, a microwave antenna system, Composed of broadband microwave amplification system, broadband power divider array, detector and video amplification system. The advantage is that by adjusting the working mode of the microwave radiometer system provided by the invention, the relative calibration between the channels can be realized, and it has the advantages of simple calibration method, high reliability, low cost, and wide range of system measurement frequency. The microwave radiometer, in addition to being used for fusion plasma microwave diagnosis, can also be used for space microwave radiation monitoring, microwave communication signal reception and the like.

Description

technical field [0001] The invention belongs to a nuclear fusion plasma diagnosis device, in particular to a multi-channel broadband microwave radiometer with self-calibration function, which has the advantages of simple calibration method, high reliability, low cost, wide measurement frequency range and the like. Background technique [0002] The microwave radiometer is an important means to measure the temperature of plasma electrons. This is because the high-temperature plasma in the tokamak is confined by the magnetic field. Due to the Lorentz force, the electrons perform cyclotron motion to generate electron cyclotron radiation, and the electron cyclotron radiation frequency At microwave frequencies, the intensity is proportional to the electron temperature. Since the frequency of the electron cyclotron radiation is the cyclotron frequency of the emission point and its harmonic frequency, which is completely determined by the magnetic field of the emission point, the el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R23/165G01R35/00
Inventor 石中兵
Owner SOUTHWESTERN INST OF PHYSICS
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