Novel Phase Shifter Based on Dielectric Resonator on Liquid Crystal Substrate
Keywords:
Dielectric resonator filter, finite difference time domain, liquid crystal, phase shifterAbstract
In this paper, a novel design of microwave phase shifter with enhanced high level of flexible integration is proposed and analyzed using 3D finite difference time domain. The proposed design is based on the combination of dielectric resonators and nematic liquid crystal (NLC) layer of type E7. The effects of the structure geometrical parameters on the transmission angle are carried out. Based on the simulation results, optimizations of the geometries are curial for varying the phase of the transmitted signal. In addition, the use of NLC layers placed in silica pan as a substrate to the dielectric resonator offers a number of advantages over existing microwave phase shifters such as simple design, high bandwidth and phase tunability. Moreover, the suggested design has an excellent potential for being very useful in microwave encryption systems.
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