Electrically controlled detecting device for microwave medium coating and detecting method thereof

Abstract

The invention relates to detection of microwave coating dielectric properties, particularly to an electrically controlled detecting device for a microwave medium coating and a detecting method thereof. The detecting device is provided with a rectangular waveguide, parallel coupled microstrip electrodes, a DC stabilized voltage supply, a vector network analyzer, a computer and a short circuit plate, wherein the front end of the rectangular waveguide is connected with a port of the vector network analyzer; the parallel coupled microstrip electrodes are arranged in the middle of the rectangular waveguide; the rear end of the rectangular waveguide is connected with the short circuit plate; an output end of the DC stabilized voltage supply is connected with the parallel coupled microstrip electrodes; and the vector network analyzer is connected with an input port of the computer. The microstrip electrodes are arranged on a to-be-tested sample, placed in the end surface of the waveguide and clamped by the short circuit plate for testing, and the microstrip electrodes are connected; voltage is applied to the microstrip electrodes, so as to observe the variation of the scattering parameters; and a known air layer and a PTFE coating are tested, the dielectric constant is calculated, and electromagnetic parameters of the known coating and the testing result are compared, so as to determine the stability, the testing error and the testing precision of the testing system.

Description

technical field [0001] The invention relates to a detection of dielectric properties of a microwave coating, in particular to an electrical control detection device and a detection method of a microwave dielectric coating. Background technique [0002] With the increasing development of military technology, microwave dielectric coatings have been rapidly developed in both military and civilian applications. The controllability research of microwave coatings is a new idea proposed in recent years. , magnetic field or change the temperature of the microwave coating to control the electromagnetic parameters of the microwave coating to change its absorbing performance. The electromagnetic parameters of microwave coatings refer to complex permittivity and complex magnetic permeability, which are important basis for evaluating the microwave absorbing performance of microwave coatings. There are many methods for testing the original electromagnetic parameters of microwave coatings...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems existing in the electric control detection of the existing microwave dielectric coating, and to provide an electronically controllable, wide applicability, no damage, high precision, easy operation, especially in the electric control of the conductive polymer coating. Electronic control detection device for microwave dielectric coating with more advantages in control detection

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