Title :
Recent measurements of compact electronically tunable liquid crystal phase shifter in rectangular waveguide topology
Author :
Weickhmann, C. ; Nathrath, N. ; Gehring, R. ; Gaebler, Alexander ; Jost, Matthias ; Jakoby, Rolf
Author_Institution :
Inst. for Microwave Eng. & Photonics, Tech. Univ. Darmstadt, Darmstadt, Germany
Abstract :
A low-weight, compact, tunable phase shifter based on liquid crystal technology is presented. It is designed in a hollow waveguide topology with a dielectric filled cross-section. The operational frequency range is 21-29 GHz, but data up to 35 GHz have been obtained and are presented. The device offers more than 140° phase shift peak per dB insertion loss and 110-130°/dB in the desired range.
Keywords :
dielectric-loaded waveguides; liquid crystal devices; microwave phase shifters; compact electronically tunable liquid crystal phase shifter; dielectric filled cross-section; frequency 21 GHz to 29 GHz; hollow waveguide topology; rectangular waveguide topology;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2013.2281
