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Vector network based material testing method

A material testing, vector network technology, applied in the direction of material magnetic variables, measuring devices, measuring electrical variables, etc., can solve the problems of low accuracy and troublesome operation, and achieve the effect of easy operation, simple operation and accurate data.

Inactive Publication Date: 2018-03-16
SICHUAN LAIYUAN TECH CO LTD
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Problems solved by technology

[0003] However, the existing method of testing materials using electromagnetic characteristic parameters is cumbersome and has low accuracy

Method used

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Experimental program
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Embodiment

[0017] The present invention is based on the material testing method of vector net, comprises the following steps:

[0018] (1) First place the solid plate material between the receiving module and the sending module, and cover it with electromagnetic waves of 0.2GHz-3GHz;

[0019] (2) The vector network analyzer obtains the reflection transmission parameters between the receiving module and the sending module, and then sends the obtained signal to the analysis module;

[0020] (3) The analysis module processes and analyzes the signals of different periods through analysis and filtering, and then sends the results to the calculation module;

[0021] (4) The calculation module obtains its impedance and wavenumber according to the surrounding electromagnetic field distribution, thereby obtaining the refractive index of the wave-absorbing material through calculation, and obtaining the permittivity and magnetic permeability according to the propagation velocity of the electromagn...

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Abstract

The invention discloses a material testing method based on a vector network. Firstly, a solid plate material is placed between a receiving module and a sending module, and it is covered with electromagnetic waves of 0.2GHz-3GHz; a vector network analyzer obtains the receiving module and the sending module The reflection transmission parameters between them, and then send the obtained signal to the analysis module; the analysis module processes and analyzes the signals of different periods through analysis and filtering, and then sends the result to the calculation module; the calculation module obtains Its impedance and wave number, so that the refractive index of the absorbing material can be obtained by calculation, and the dielectric constant and magnetic permeability can be obtained according to the propagation speed of electromagnetic waves in the medium, and specific material characteristic parameters can be deduced according to specific algorithms.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a material testing method based on vector nets. Background technique [0002] The free space method is an open-field electromagnetic characteristic parameter testing technology, which belongs to the transmission / reflection method. This method was first introduced by Cullen AL using the Fresnel formula to measure the electromagnetic parameters of materials in free space. The free space method has lower requirements on the sample, and only needs a large enough flat plate with two parallel sides, because it can reduce the diffraction of the external environment and the diffuse reflection caused by the uneven surface. [0003] However, the existing method of testing materials using electromagnetic characteristic parameters is cumbersome and has low accuracy. Contents of the invention [0004] Based on the above-mentioned problems, the present invention provides a material testing method b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/72G01R29/08
CPCG01N27/72G01R29/0878
Inventor 阳安源
Owner SICHUAN LAIYUAN TECH CO LTD
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