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Single-ended test method for wave-absorbing characteristic of material

A characteristic, single-ended technology, applied in the field of vector network testing, can solve the problems of limited precision testing

Pending Publication Date: 2022-01-14
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bow method has relatively high requirements for experimental conditions. If there is no laboratory with corresponding equipment, this test cannot be carried out. The accuracy is relatively high but the test is relatively limited.

Method used

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  • Single-ended test method for wave-absorbing characteristic of material
  • Single-ended test method for wave-absorbing characteristic of material
  • Single-ended test method for wave-absorbing characteristic of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0051] In an embodiment, after the sample to be tested is put into the detection device through the above-mentioned test steps, the following results will be obtained: Image 6 The test results shown in the figure, line 1 represents the test results of the inversion method, line 2, line 3 and line 4 respectively represent the bow method of segmented data measured by speakers of different frequency bands, and line 5 represents the single-ended short circuit method from Figure 5 It can be seen that the single-ended method is more consistent with the bow method and the inversion method.

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Abstract

The invention discloses a single-ended test method for the wave-absorbing characteristic of a material, which comprises a sample cavity, a microwave transmission rod, a spring needle, an SMA joint and a vector network analyzer, wherein one end of the sample cavity is provided with a test fixture; the microwave transmission rod is arranged in the sample cavity and is connected with the test fixture in a penetrating manner; the spring needle is arranged in the microwave transmission rod; the SMA joint is arranged at the other end of the sample cavity; the receiving end of the vector network analyzer is electrically connected with a coaxial cable, and the other end of the coaxial cable is electrically connected with the other end of the SMA joint. The method has the beneficial effects that the wave-absorbing characteristic of the material is tested by utilizing a single-ended method, the wave-absorbing characteristic of the material can be obtained by intuitively testing S11 through a vector network analyzer through the single-ended method, and meanwhile, test equipment does not need to be rebuilt, a darkroom does not need to be built, and arch test equipment does not need to be built; the test method can be used as another complementary test method of the bow-shaped method or the two methods for mutual verification.

Description

technical field [0001] The invention relates to a method for testing the wave-absorbing characteristics of materials, in particular to a single-end test method for the wave-absorbing characteristics of materials, and belongs to the technical field of vector network testing. Background technique [0002] The wave-absorbing property of materials is a material property that is widely concerned at present. It involves a wide range of fields, especially in the field of stealth technology. Then its testing methods and means are also a hot spot in this field. At present, the wave-absorbing properties of materials Its main test methods include: bow method and double-ended test electromagnetic parameter inversion method. [0003] The bow method test needs to spend a lot of money to build a darkroom and build a bow method. The bow method has relatively high requirements on experimental conditions. If there is no laboratory with corresponding equipment, this test cannot be carried out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N22/00
CPCG01N22/00G01R27/2623G01R27/04
Inventor 李喜玲乔亮王建波
Owner LANZHOU UNIVERSITY
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