A Frequency Selective Radome With Wideband Absorbing Properties

被引:674
作者
Costa, Filippo [1 ,2 ]
Monorchio, Agostino [1 ,2 ]
机构
[1] Univ Pisa, Dept Informat Engn, I-56122 Pisa, Italy
[2] CNIT, RaSS Natl Lab, Pisa, Italy
关键词
Electromagnetic absorbers; high-impedance surfaces (HIS); low RCS; metamaterials; radar absorbing material (RAM); radome; resistive frequency selective surfaces (RFSS); DESIGN; THICKNESS;
D O I
10.1109/TAP.2012.2194640
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A frequency selective radome is presented, acting as a pass band filter at a given frequency band, while behaving as an absorber above the transmission band. The pass band behavior is obtained by a metallic FSS realized through a compact interdigitated Jerusalem cross element characterized by a very large rejection band. The metallic FSS is used as the ground plane of a thin wideband absorber based on resistive high-impedance surfaces within the total reflection band. The outer absorber reduces the signature of the antenna system when the radome is illuminated by out of band signals. The resistive FSS which comprises the absorber is designed so to minimize losses within the transmitting band of the radome. The composite structure is thoroughly analyzed by an efficient equivalent circuit approach and by full-wave numerical simulations.
引用
收藏
页码:2740 / 2747
页数:8
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