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An arrangement for electrical magnetic medium electromagnetic quantity temperature variation testing using ridge waveguide

An electromagnetic parameter and ridge waveguide technology, which is used in the test of complex permittivity and complex permeability, and in the field of electronics. It can solve the problems of narrow test frequency band, wide test frequency range, and large volume.

Inactive Publication Date: 2003-10-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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AI Technical Summary

Problems solved by technology

The system is characterized by the use of a rectangular waveguide whose cross section is shown in Figure 4 As shown, compared with the coaxial, the rectangular waveguide does not have the problem of dielectric support and the concentricity of the inner and outer conductors, and it is easy to realize the calibrator, transmission line and test sample that can be used for high temperature. Narrow, and when used for low-frequency band testing, the volume is large, and the sample to be tested is not easy to make
[0007] As far as the inventor knows, the variable temperature test of the existing electromagnetic medium electromagnetic parameters cannot take into account the following requirements: (1) easy to make test samples, transmission lines and calibration parts that can be used for high temperatures; (2) wide test frequency range; (3) ) does not require a darkroom environment; (4) Moderate heating power

Method used

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  • An arrangement for electrical magnetic medium electromagnetic quantity temperature variation testing using ridge waveguide
  • An arrangement for electrical magnetic medium electromagnetic quantity temperature variation testing using ridge waveguide
  • An arrangement for electrical magnetic medium electromagnetic quantity temperature variation testing using ridge waveguide

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Embodiment Construction

[0034] The test frequency range of the variable temperature test device in the embodiment of the present invention is 2-18 GHz, and its working temperature range is room temperature to 300°C.

[0035] The device of this embodiment divides the test system into two sections of 2~4.8GHz and 4.8~18GHz, and makes two test systems (2~4.8GHz and 4.8~18GHz) respectively according to the following method: first design the broadband according to the first step of the inventive scheme The ridge waveguide transmission system suitable for high-temperature testing is calibrated using the existing TRL calibration technology. According to the requirements for the calibration parts, the low-expansion alloy 4J36 is selected according to the temperature requirements from room temperature to 300 ° C, which can be used in this temperature range. Ridge waveguide transmission system and TRL calibration parts;

[0036] Then assemble two test systems (2-4.8GHz and 4.8-18GHz), perform temperature-varia...

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Abstract

The measurement equipment consists of vector network analyzer, temperature control system, TRL correcting part and ridged waveguide transmission system. The ridged waveguide transmission system consists of two coaxial converting joints connected to the ridged waveguide, two heat-dissipating ridged waveguides, two heat-isolating ridged waveguides, ridged waveguide heating seat, measured ridged waveguide and ridged waveguide temperature measuring seat. By using ridged waveguide as transmission line, the present invention has the features of relatively wide measurement frequency range, easy-to-make correcting part, measured specimen and transmission line. The present invention is especially suitable for measuring electromagnetic parameters of electromagnetic medium in different temperature and wide frequency band.

Description

Technical field: [0001] The invention belongs to the field of electronic technology, in particular to the technical field of testing complex permittivity and complex permeability of microwave electromagnetic media. Background technique: [0002] Electromagnetic media has a wide range of uses in television broadcasting, radar technology, microwave anechoic chambers, and electronic devices, and it also has many uses in military technology. In order to meet the requirements of electromagnetic media used at different temperatures and in a wide frequency band, it is more and more important to measure the temperature characteristics of their electromagnetic parameters (ie, complex permittivity and complex permeability). [0003] As for the method of microwave electromagnetic medium electromagnetic parameter variable temperature test, the network parameter method is mainly used at present. The working principle of the network parameter method is to treat the sample and its sensors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/72G01R27/26G01R33/12
Inventor 李恩张其劭郭高凤
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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