An Electromagnetic Design Method for Broadband Camouflage Barrier Absorber

Abstract

The invention discloses an electromagnetic design method for a broadband camouflaged barrier absorbing body, comprising the following steps: S1, modeling a wave absorbing body, the wave absorbing body includes a hollow hexagonal prism structure and a gradient honeycomb structure; S2, selecting a hollow For the cross section of the hexagonal prism structure, the equivalent electromagnetic calculation of the equivalent structural material in the plane area is performed; S3, the equivalent electromagnetic calculation is performed on the gradient honeycomb structure material of the absorber based on the equivalent structural material method in the plane area; S4, through The equivalent electromagnetic parameters of different absorber structural materials are established, the reflectivity of the absorber structural materials is calculated, and the structure of the absorber is optimized. The broadband wave absorber of the present invention can be applied to the camouflage barriers of weapon shelters, cavities, wave-absorbing buildings, etc., while achieving excellent electromagnetic wave absorption or shielding effects, it also has the characteristics of surface waterproof, anti-oxidation, high quality Lightweight and other advantages, it is a camouflaged barrier absorber with application prospects.

Description

technical field [0001] The invention relates to an electromagnetic design method and manufacturing technology of a camouflage shield wave absorber, in particular to an electromagnetic design method of a broadband camouflage shield wave absorber. Background technique [0002] The camouflage shielding absorbing material can reduce the backscattering of radar waves as much as possible. Aiming at the characteristics of light weight, wide protection band and low cost of radar camouflage nets, radar wave absorbing materials with porous sparse structures have been paid attention to. In the porous material, the radar wave propagates between the hole and the absorbing matrix in the form of broken lines, which is longer than the straight line propagation in the homogeneous material, which increases the loss of the radar wave. Reflection, during which the radar wave is absorbed by the absorbing matrix of the hole wall. The camouflage net has experienced the use of the scattering prin...

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Problems solved by technology

The document "Yan Jiabin, Liu Ying, Hu Chuanxin, etc., Development of multi-band grass-type camouflage net, surface technology, 2008" proposed a three-dimensional grass-type camouflage net absorbing mechanism, on the basis of radar absorbing coating design, The role of the three-dimensional grass structure on the radar absorbing effect is proposed. The three-dimensional grass structure is in the 2-18GHz band, the qualified bandwidth is 16GHz, and the maximum attenuation value can reach 30dB. The material has a complex structure, and the design theory has not yet been deepened. Research

The paper "Liu Haitao, Cheng Haifeng, etc., Preparation and performance research of pseudo-decorative base fabric with anti-radar performance, Weapon Materials Science and Engineering, 2006" proposed the preparation process of pseudo-decorative base fabric. The material is a simple Uniform structure, the design theory stays on a single-layer structure, and there is no in-depth study of complex structures

[0004] To sum up, camouflaged barrier absorbers usually have a porous structure in structure, and the structure is complex. At present, there are not many designs for porous materials. How to use porous structures and propose efficient electromagnetic design methods has always been a problem that needs to be studied.

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