Phase tunability of reflectarray patch elements using tunable dielectric substrate of nematic liquid crystal

Ismail, Muhammad Yusof and Zain, A.F.M. Phase tunability of reflectarray patch elements using tunable dielectric substrate of nematic liquid crystal. Compilation of Papers - VOLUME 1 .

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Abstract

There has been much interest recently in developing reconfigurable reflectarray antenna for tunab le microwave applications. Liquid crystal (LC) has been given much attention due to its dielectric anisotropy property which allows the change in the frequency and hence the phase of reflection. In this paper, the phase tunability of the periodic array using K15 nematic liquid crystal as the dielectric permittivity is presented. Simulated and experimental results at X-band are used to compare the plane wave scattering parameter from a two patch reflectarray cell of 500 bm. A tunable dynamic phase range of 2210 is achieved over a broad band of 220 MHz which also gives a tunability of 2.2%

Item Type:Article
Subjects:Q Science > QD Chemistry
Divisions:Faculty of Electrical and Electronic Engineering > Department of Electrical Technology
ID Code:2465
Deposited By:Normajihan Abd. Rahman
Deposited On:15 May 2012 08:41
Last Modified:15 May 2012 08:41

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