2015 IEEE MTT-S International Microwave Symposium 2015
DOI: 10.1109/mwsym.2015.7166961
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Liquid crystal enabled substrate integrated waveguide variable phase shifter for millimeter-wave application at 60ghz and beyond

Abstract: A variable phase shifter based on substrate integrated waveguide (SIW) and liquid crystal (LC) is proposed and demonstrated in 57-65GHz. The permittivity of nematic LCs can be made variable by applying various intensities of electric or magnetic fields. By partially replacing the dielectric substrate of SIW with standard LC (E7) and embedding an electric bias structure, an electronically tunable phase shifter is created. The phase shifter can be continuously tuned up to 3000 with an insertion loss from 4.5dB t… Show more

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