CST – Computer Simulation Technology

Title:
Tunable Electric-LC Resonators using Liquid Crystal
Author(s):
Pouria Yaghmaee, Withawat Withayachumnankul, Ali K. Horestani, Amir Ebrahimi, Bevan Bates, Christophe Fumeaux
Source:
IEEE Antennas and Propagation Society International Symposium (APSURSI), 2013
Vol./Issue/Date:
7 July 2013
Year:
2014
Page(s):
382 - 383
Abstract:
A concept of tunable electric-LC (ELC) resonators is presented in this work. The voltage-controlled tunability is achieved by using liquid crystal in a micro-fluidic channel running through the central capacitive gaps. To attain the largest tunability, the structure is optimized through a parametric analysis using full-wave electromagnetic simulations. The simulation results predict a 6% continuous frequency tuning for this ELC resonator around the frequency of 4.5 GHz. The achieved results demonstrate the possibility of using these ELC resonators in an array to form a tunable frequency selective surfaces (FSS). The principle can be scaled for operation at higher microwave frequencies, where the dissipation of liquid crystal is low.
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