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A novel design of ultra-wide stop-band single-layer frequency selective surface using square-loop and cross

Published online by Cambridge University Press:  04 November 2020

Amit Birwal*
Affiliation:
Department of Electronic Science, University of Delhi, South Campus, New Delhi, 110022, India
Sanjeev Singh
Affiliation:
Institute of Informatics and Communication, University of Delhi, South Campus, New Delhi, 110022, India
Binod Kumar Kanaujia
Affiliation:
School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
*
Author for correspondence: Amit Birwal, E-mail: [email protected]

Abstract

In this paper, a novel design of ultra-wide stop-band single-side single-layer frequency selective surface (FSS) is presented. The unit cell of the proposed FSS is designed using the combination of conventional square loop and cross (CSLC). To enhance the bandwidth of this structure, an additional cross is inserted in all the four quadrants of CSLC. The stop-band transmission bandwidth assuming −10 dB threshold is found to be 128.94% (2.16–10 GHz) which is 34.33% more as compared to the bandwidth of CSLC. The unit cell with a dimension of 16 × 16 mm2 is printed on one side of an FR4 substrate. The design is fabricated and the measured results are found to be in good agreement with the simulated results. The design provides excellent stability for both transverse magnetic and transverse electric polarizations. The design is very flexible, where any resonant frequency can be achieved by changing the length of unit cell. The design is useful in many applications such as antenna gain enhancement, electromagnetic wave shielding for Wi-Fi/5G systems, and other Internet of Things-based applications.

Type
Research Paper
Copyright
Copyright © The Author(s), 2020. Published by Cambridge University Press in association with the European Microwave Association

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