An Angularly Stable Dual-Band FSS With Closely Spaced Resonances Using Miniaturized Unit Cell

被引:115
作者
Ghosh, Saptarshi [1 ]
Srivastava, Kumar Vaibhav [1 ]
机构
[1] IIT Kanpur, Dept Elect Engn, Kanpur 208016, Uttar Pradesh, India
关键词
Angular stability; dual-band spatial filter; frequency selective surface (FSS); miniaturized FSS; FREQUENCY-SELECTIVE SURFACE; ELEMENT;
D O I
10.1109/LMWC.2017.2661683
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 novel miniaturized-element dual-band frequency selective surface (FSS) with closely spaced resonance is presented in this letter. The proposed FSS comprises of meander lines printed on a single-layer dielectric substrate to provide dual stopband characteristic. Compared to previously published spatial filters, the proposed FSS has better miniaturization characteristic having the unit-cell size of 0.065 lambda(0) x 0.065 lambda(0), where lambda(0) corresponds to free space wavelength of the lower resonance frequency. In addition, the operating bands are closely located exhibiting the frequency ratio as low as 1.29. The surface current distribution and the equivalent circuit model are illustrated to explain the resonance behavior of the designed FSS. Furthermore, the proposed structure is polarization-independent and angularly stable for both TE and TM polarizations. A prototype of the dual-band FSS is fabricated and measured, which validates the simulated responses under normal and oblique incidence.
引用
收藏
页码:218 / 220
页数:3
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