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Accurate modeling of liquid crystal-tuned meander-line phase-shifter

Seddon, L and Deo, P and Mirshekar-Syahkal, D and Day, S and Fernández, FA (2013) Accurate modeling of liquid crystal-tuned meander-line phase-shifter. In: UNSPECIFIED, ? - ?.

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Abstract

Preliminary modeling results and the description of the modeling technique for analysis and design of a tunable meander-line microstrip phase-shifter for a novel liquid crystalbased beam steerable planar antenna operating at 60 GHz are presented. In this phase-shifter, the substrate is a nematic liquid crystal. Two three-dimensional finite-element modeling programs are implemented in order to determine first the director distribution within the liquid crystal substrate for different bias voltages and then to obtain the wave-propagation along the meander-line, leading to the characterization of the phase shifter. In an example, the results from the presented anisotropic solution is compared with those generated by a commercial software considering a dielectric channel in place of the liquid crystal below the microstrip line, with an isotropic dielectric constant representing once the switched and once the un-switched state of the liquid crystal. © 2013 IEEE.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Published proceedings: IEEE MTT-S International Microwave Symposium Digest
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Jim Jamieson
Date Deposited: 13 Aug 2014 16:02
Last Modified: 23 Jan 2019 02:15
URI: http://repository.essex.ac.uk/id/eprint/9955

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