Abstract
In this paper, the Generalized Matching Law of electromagnetic parameters was given for in the application of radar absorbing materials, and applied in the research of absorbing properties of multi -coated absorbing materials. We gave the power reflection formula, defined the constant of general matching law M, and discussed the relationship of general matching constant M with power reflectivity RP, thickness d, relative permittivity εr, relative permeability μr. We found that the enhancement of RP was not obvious at the ε″r was optimized, but the μ″r was primary. In short, this is consistent with panorama analysis method.
Highlights
The radar signature is given by the radar cross section (RCS) that can be viewed as a comparison of the strength of the reflected signal from a target to the reflected signal[1]
Rubber radar absorbing materials is mainly made of rubber matrix and electromagnetic wave absorbents
A Radar absorbing materials (RAM) must assure an attenuation of electromagnetic waves and a good match at the air/material interface and these involve that the material must satisfy two contradictory conditions[7,8,9]
Summary
The radar signature is given by the radar cross section (RCS) that can be viewed as a comparison of the strength of the reflected signal from a target to the reflected signal[1].Radar absorbing materials (RAM) can be divided into coating material, structure composites, patch material and other type of absorbing materials [2]. A RAM must assure an attenuation of electromagnetic waves and a good match at the air/material interface and these involve that the material must satisfy two contradictory conditions[7,8,9]. In the study of thin coating of RAM, the proposition of the general matching law (GML) and the panorama analysis method(PAM) were instructive on the development of high-level coating materials, the effective selection of materials and the optimized design of materials.
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