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A fully absorbing microwave energy measuring device

A technology of energy measurement and full absorption, which is applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of the influence of measurement results and large port reflection coefficients, and achieve the elimination of the influence of port reflection coefficients, wide range and wide application range Effect

Active Publication Date: 2018-07-03
METROLOGY & MEASUREMENT CENT OF CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology

[0004] At present, the pulsed microwave energy measurement systems that have been publicly reported all have certain shortcomings. For example, the document "Research on Adiabatic Microwave Pulse Energy Meter" uses a capacitive sensor for measurement. The measurement range is only 100J, and the port reflection coefficient is as large as 1.3; The energy measurement system in the document "Design and Experiment of 3mm Gyrotron Energy Meter" is a space radiation absorption type, and the port reflection coefficient of the two measurement systems will affect the measurement results

Method used

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  • A fully absorbing microwave energy measuring device
  • A fully absorbing microwave energy measuring device
  • A fully absorbing microwave energy measuring device

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Embodiment Construction

[0020] The full-absorption microwave energy measuring device of the present invention includes a transition connection section, an absorber, a detector and a control system. The microwave source reaches the absorbing surface of the absorber through the transition connection structure of the energy measuring device. After the absorber absorbs the microwave, the temperature in the absorber rises, the volume of the absorbing liquid in the absorber expands, and the liquid level in the detector directly connected to the absorbing cavity The control system processes and analyzes the signal of the detector to obtain the energy of the microwave source under test.

[0021] The transitional connection section and the metal shielding layer are connected in the form of a flange, and the flange screw passes through the absorber, and the transitional connection section, the absorber and the metal shielding layer are pressed tightly by the screw, and the insulation layer is attached to the me...

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Abstract

The invention provides a total absorption-type microwave energy measuring device. Absorption liquid in an absorption body in the device absorbs microwaves; a detector is connected with the absorption body; a transition section and a metal shielding layer adopt connection in a flange plate form; a thermal insulation layer is attached to the metal shielding layer; the input end of a control system is connected with the detector and a temperature sensor; the output end of the control system is connected with a heating resistance wire and an oscilloscope; and the control system performs analysis, processing and output of signals. Total absorption on the microwaves can be realized, the structure is simple, the performance is reliable, the use is safe, and the application range is wide.

Description

technical field [0001] The invention belongs to the technical field of microwave testing, and in particular relates to a microwave energy measuring device for realizing accurate measurement of microwave energy. Background technique [0002] Energy parameter is an important parameter in microwave measurement. The advantage of microwave energy measurement is that it has nothing to do with microwave frequency and mode. It is widely used in high-power, medium-power and low-power microwave energy measurement. It is suitable for broadband, narrowband, single-mode and multi-mode Measurement of microwave energy. Microwave has the characteristics of high peak power and short pulse time, and relevant microwave research institutes in China pay close attention to the measurement of microwave power (mainly including online intracavity coupling method and far-field radiation integration method). With the development of microwave technology, its peak power is getting higher and higher, ma...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R29/08
CPCG01R29/0871
Inventor 张翠翠王益王建忠
Owner METROLOGY & MEASUREMENT CENT OF CHINA ACADEMY OF ENG PHYSICS
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