Circuit Model Analysis of Switchable Perfect Absorption/Reflection in an Active Frequency Selective Surface

Rui Zhao; Boyi Gong; Fajun Xiao; Chong He; Weiren Zhu

doi:10.1109/ACCESS.2019.2913406

IEEE Access (Jan 2019)

Circuit Model Analysis of Switchable Perfect Absorption/Reflection in an Active Frequency Selective Surface

Rui Zhao,
Boyi Gong,
Fajun Xiao,
Chong He,
Weiren Zhu

Affiliations

Rui Zhao: Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, China
Boyi Gong: Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, China
Fajun Xiao: MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi’an, China
Chong He: ORCiD; Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, China
Weiren Zhu: ORCiD; Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, China

DOI: https://doi.org/10.1109/ACCESS.2019.2913406
Journal volume & issue: Vol. 7
pp. 55518 – 55523

Abstract

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This paper presents a switchable perfect absorber/reflector in S band using a PIN diode integrated active frequency selective surface (AFSS). It is numerically demonstrated that the AFSS shows over 99% absorptivity at 3.5 GHz when the diode is forward biased, whiles reflects over 99% incident power when the diode is inversed biased. An equivalent circuit (EC) model is further developed to characterize the AFSS's switchable electromagnetic performance and aim at model optimization. The empirical formulas and curve fitting technology have been employed to get the lumped element parameters in the EC model. Special considerations are given to physical attributes, including the dielectric permittivity and thickness of the substrate. The consistency of the electromagnetic simulations and EC analysis demonstrates the high accuracy of the developed EC model.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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