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An Ultrathin and Broadband Radar Absorber Using Resistive FSS

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4 Author(s)
Mei Li ; Inst. of Appl. Phys., Univ. of Electron. Sci. & Technol. of China, Chengdu, China ; ShaoQiu Xiao ; Yan-Ying Bai ; Bing-Zhong Wang

An ultrathin and broadband radar absorber comprising single-layer resistive frequency selective surface (FSS) is investigated in this letter. The resistive FSS layer constructed from resistive/low-conductivity treble-square loops is backed by a grounded foam material. Numerical results show that the proposed absorber can provide a 10-dB radar cross section (RCS) reduction for the conducting plate over the frequency range of 10.7-29 GHz, which is equivalent to a relative bandwidth of 92.2%. Moreover, the structure has the thickness of 2 mm (only 0.071 to 0.193 at lowest and highest frequencies, respectively). The equivalent circuit model is then used to introduce the working principles of the proposed absorber.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )