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Switchable wideband metamaterial absorber and AMC reflector for X-band applications and operations

Gajibo, M. M. and Rahim, M. K. A. and Murad, N. A. and Ayop, O. and Majid, H. A. (2018) Switchable wideband metamaterial absorber and AMC reflector for X-band applications and operations. Telkomnika (Telecommunication Computing Electronics and Control), 16 (4). pp. 1535-1541. ISSN 1693-6930

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Official URL: http://dx.doi.org/10.12928/TELKOMNIKA.v16i4.9065

Abstract

A single layered metamaterial structure with capabilities of switching from a wideband metamaterial absorber to an AMC reflector and vice versa is presented in this paper. A flame retardant 4 substrate with physical thickness of 1.60mm was used. The absorption rate, reflection rate, reflection phase and surface current distribution were studied and discussed. The operational incidental wave angles were varied from 0° to 65°. A peak reflection of about 90% was achieved at 11.20 GHz with a usable bandwidth (-90 to +90) of 3.01 GHz by the AMC reflector. The metamaterial absorber demonstrated a wideband performance (from 8.10 GHz to 14.30 GHz). It achieved 100% absorption at 11.20 GHz and not less than 65% absorption across the entire X-band frequencies except for incidental wave angles above 55°.

Item Type:Article
Uncontrolled Keywords:Absorber, AMC
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:84483
Deposited By: Widya Wahid
Deposited On:11 Jan 2020 15:31
Last Modified:11 Jan 2020 15:31

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