Miniaturized frequency selective surface with high angular stability

Zain Ul Abidin; Qunsheng Cao; Gulab Shah; Zaheer Ahmed Dayo; Muhammad Ejaz

doi:10.1515/freq-2021-0116

Article

Miniaturized frequency selective surface with high angular stability

Zain Ul Abidin , Qunsheng Cao , Gulab Shah , Zaheer Ahmed Dayo and Muhammad Ejaz

Published/Copyright: October 13, 2021

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From the journal Frequenz Volume 76 Issue 3-4

Abstract

In this paper, a miniaturized bandstop frequency selective surface (FSS) with high angular stability is presented. Each FSS element consists of four sets each consisting eight octagonal concentric interconnected loops. The four sets are connected with each other through outermost octagonal loop. The unit size is miniaturized to 0.066 λ₀ at the resonant frequency of 1.79 GHz. The proposed configuration achieves excellent angular stability (only 0.025 GHz resonant frequency deviation is observed upto 83° oblique angles). The working mechanism of FSS is explained with the help of equivalent circuit model (ECM), electric field distribution, and corresponding surface current distribution. A prototype of the designed bandstop FSS is fabricated to verify the simulated frequency response. The experimental results are consistent with the simulation results. Simple geometry, low profile, high angular stability, and compact cell size are prominent features of the proposed structure.

Keywords: angular stability; frequency selective surface (FSS); miniaturization; polarization; shielding

Corresponding author: Zain Ul Abidin, College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China, E-mail: abidin@nuaa.edu.cn

Funding source: Natural Science Foundation of China

Award Identifier / Grant number: 61871219

Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: The authors gratefully acknowledge the financial support from the Natural Science Foundation of China under grant No. 61871219.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2021-05-06

Accepted: 2021-10-01

Published Online: 2021-10-13

Published in Print: 2022-04-26

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Articles in the same Issue

https://doi.org/10.1515/freq-2021-0116

Keywords for this article

angular stability; frequency selective surface (FSS); miniaturization; polarization; shielding