Open AccessDual‐band three‐dimensional FSS with high selectivity and small band ratio
Author(s) -
Yu Zhengyong,
Yang Xia,
Zhu Jianping,
Wang Cheng,
Shi Yongrong,
Tang Wanchun
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2019.1283
Subject(s) - multi band device , selectivity , dual (grammatical number) , materials science , optoelectronics , physics , optics , computer science , telecommunications , chemistry , antenna (radio) , biochemistry , catalysis , art , literature
In this Letter, a three‐dimensional (3D) frequency selective surface (FSS) is proposed, exhibiting a dual‐bandpass response with high selectivity and small band ratio. The unit cell of the presented 3D FSS consists of a pair of gridded double square loops (GDSLs) and a waveguide structure. Multiple transmission zeros and transmission poles are obtained from the electromagnetic coupling between the GDSLs. The electromagnetic coupling is enhanced by the waveguide structure, resulting in a dual‐passband behaviour with high selectivity. Double square loops are designed to locate close to obtain a small band ratio. The measured results of the implemented FSS agree well with the simulated ones, which show that the proposed design can achieve the desired response to variations of incident angle from 0° to 60° for both TE and TM polarisations.