Open AccessDesign and preparation of a radar-absorbing material based on metamaterial
Author(s) -
Lei Sun,
Haifeng Cheng,
Zhou Yong-Jiang,
Jun Wang,
Yongqiang Pang
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.108901
Subject(s) - materials science , finite difference time domain method , resistive touchscreen , epoxy , metamaterial , dielectric , radar , bandwidth (computing) , substrate (aquarium) , optics , reflectivity , optoelectronics , acoustics , composite material , computer science , telecommunications , physics , oceanography , geology , computer vision
A kind of radar-absorbing material (RAM) based on metamaterial, which contains resistive patches, dielectric substrate and metal backing, is designed. The reflectivity of the RAM is calculated using the finite difference time-domain method (FDTD) and optimized by genetic algorithm(GA). Then RAMs with a reflectivity bandwidth of 818 GHz below -10 dB is obtained. Moreover, its thickness is only 3mm. To confirm the design results, the RAM is prepared by fabricating a hollow quartz fibre reinforced epoxy resin substrate through using hand lay-up process and making the resistive patches by screen painting. The reflectivity of the absorber is measured, showing that the experimental result is consistent with the design value.