Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/83778
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Type: Conference paper
Title: Interlayer tuning of X-band frequency-selective surface using liquid crystal
Author: Ebrahimi, A.
Yaghmaee, P.
Withayachumnankul, W.
Fumeaux, C.
Al-Sarawi, S.
Abbott, D.
Citation: 2013 Asia-Pacific Microwave Conference Proceedings (APMC): pp.1118-1120
Publisher: IEEE
Publisher Place: USA
Issue Date: 2013
Series/Report no.: Asia Pacific Microwave Conference-Proceedings
ISBN: 9781479914722
Conference Name: Asia-Pacific Microwave Conference (2013 : Seoul, Korea)
Statement of
Responsibility: 
Amir Ebrahimi, Pouria Yaghmaee, Withawat Withayachumnankul, Christophe Fumeaux, Said Al-Sarawi and Derek Abbott
Abstract: In this paper, a new concept of a voltage-controlled tunable frequency-selective surface (FSS) is introduced based on liquid crystal technology. The designed FSS consists of two periodically patterned metallic layers, separated by a thin dielectric substrate. Tunability is achieved by integrating liquid crystal cells within the substrate for each unit cell, producing interlayer capacitors. By applying a bias voltage between the front and back metallic arrays, the anisotropy axis of the liquid crystal molecules can be re-oriented, and thus the effective relative permittivity of the liquid crystals can be modified to cause a frequency shift in transmission response. Electromagnetic simulations predict 5.6% of continuous frequency tuning for this multi-layer FSS.
Keywords: Frequency-selective surface; liquid crystal; tunable; reconfigurable.
Rights: ©2013 IEEE
RMID: 0020134432
DOI: 10.1109/APMC.2013.6695040
Appears in Collections:Electrical and Electronic Engineering publications

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