Method for measuring high-power microwave polarization parameters

A high-power microwave and polarization parameter technology, applied in the direction of electromagnetic field characteristics, can solve the problem of high microwave power, and achieve the effect of simple method and easy operation

Active Publication Date: 2020-06-09
SOUTHWESTERN INST OF PHYSICS
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  • Description
  • Claims
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Problems solved by technology

Due to the high microwave power, there is currently no method to directly measure the polarization parameters, but it is necessary to test the microwave polarization characteristics under high power conditions, so a method that can measure the microwave polarization characteristics under high power conditions is needed method of measurement

Method used

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  • Method for measuring high-power microwave polarization parameters
  • Method for measuring high-power microwave polarization parameters
  • Method for measuring high-power microwave polarization parameters

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Embodiment Construction

[0035] The present invention will be further described below through the drawings and specific embodiments.

[0036] In the electron cyclotron resonance heating system, the main waveguide is a circular waveguide, and the microwave output from the electron gyrotron is transmitted to the antenna launch system via transmission devices such as the circular waveguide, polarizer and commutation waveguide. The microwave output by the electron gyrotron is a horizontally polarized wave, and the function of the polarizer is to change the polarization characteristics of the microwave. Before the polarizer is formally used in the electronic cyclotron heating system, high-power experimental tests need to be carried out on a high-power experimental platform to verify whether the polarizer design is reasonable.

[0037] The center of the output window of the microwave source is on the axis of the first circular waveguide 1.

[0038] Step 1: Initial calibration of the first directional coupler 6 an...

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Abstract

The invention belongs to the field of plasma heating and particularly relates to a high-power microwave polarization parameter measuring method. The method is characterized in that two directional couplers are calibrated, three transmission line square elbows are fixedly arranged by four circular waveguides, a polarizer is arranged on the first transmission line elbow, the two directional couplersare mounted on the second transmission line elbow and the third transmission line elbow, the two directional couplers are used for measuring polarization characteristics of microwaves after the microwaves are reflected by the polarizer, measured data are compared with theoretically calculated data, so whether the polarizer meets design requirements or not is checked. The method is advantaged in that a problem of testing the polarizer under the high-power condition is solved, and the method is provided for verifying whether the polarization characteristics of the polarizer conforms to the theoretical calculation result or not, and the method is simple, reliable and easy to operate.

Description

Technical field [0001] The invention belongs to the field of plasma heating, and specifically relates to a method for measuring polarization characteristics of high-power microwaves. Background technique [0002] In nuclear fusion research, electron cyclotron resonance heating is an important heating and regulating method in controlled magnetic confinement nuclear fusion. The polarizer is an important component in the electron cyclotron resonance heating system. Its main function is to change the polarization characteristics of the microwave to achieve efficient coupling between the wave and the plasma. At present, in electron cyclotron resonance heating systems, polarizers are generally used to achieve arbitrary polarization of microwaves (electron cyclotron waves) to satisfy the polarized waves required for efficient coupling of waves and plasma. [0003] At present, the microwave power of a single transmission line of the electronic cyclotron resonance heating system has reache...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/08
CPCG01R29/08
Inventor 张峰黄梅王贺
Owner SOUTHWESTERN INST OF PHYSICS
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