Title :
Compact tunable ka-band phase shifter based on liquid crystals
Author :
Moessinger, A. ; Fritzsch, Carsten ; Bildik, Saygin ; Jakoby, Rolf
Author_Institution :
Technische Universität Darmstadt, Germany
Abstract :
This paper presents the design and realization of a compact phase shifter based on a tunable dual-mode ring resonator filter at 35 GHz. The tunability is achieved by employing a thin liquid crystal layer as a tunable dielectric substrate. By applying a bias voltage in the range of 0…40V, a tunable phase range of 117° is measured. The figure of merit of the realized phase shifter is 30.6 °/dB at 34.3 GHz.
Keywords :
Dielectric measurements; Dielectric substrates; Fabrication; Liquid crystals; Optical ring resonators; Phase measurement; Phase shifters; Phased arrays; Resonator filters; Voltage;
Conference_Titel :
Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4244-6056-4
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2010.5518322
