Design and Preparation of Light-Weight Radar Absorbing Material Based on Resistive Frequency Selective Surfaces

Abstract:

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Light-weight radar absorbing material (RAM) based on resistive frequency selective surfaces (FSS) was designed and prepared. The principle of the resonances of the RAM was analyzed by calculating the impedance of the FSS and the grounded substrate according to the equivalent circuit method, and the results show that a wideband absorbing structure can be gained by producing two adjacent resonances. After design and optimization by Genetic Algorithm (GA), the RAM with absorbing bandwidth of 7.5~18GHz below -10dB was obtained, whose thickness is only 3mm. The designed RAM was gained by preparing resistive patches on the grounded dielectric substrate of rigid polyurethane foam using screen painting technology. The density of the absorber is only 0.2g/cm3, the reflectivity was measured and it shows that the experimental result is consistent with the design one.

Info:

Periodical:

Advanced Materials Research (Volumes 335-336)

Edited by:

Yun-Hae Kim, Prasad Yarlagadda, Xiaodong Zhang and Zhijiu Ai

Pages:

976-980

DOI:

10.4028/www.scientific.net/AMR.335-336.976

Citation:

L. K. Sun et al., "Design and Preparation of Light-Weight Radar Absorbing Material Based on Resistive Frequency Selective Surfaces", Advanced Materials Research, Vols. 335-336, pp. 976-980, 2011

Online since:

September 2011

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Price:

$35.00

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