Open AccessRecent measurements of compact electronically tunable liquid crystal phase shifter in rectangular waveguide topology
Author(s) -
Weickhmann C.,
Nathrath N.,
Gehring R.,
Gaebler A.,
Jost M.,
Jakoby R.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.2281
Subject(s) - phase shift module , insertion loss , materials science , waveguide , phase (matter) , topology (electrical circuits) , liquid crystal , optoelectronics , dielectric , optics , range (aeronautics) , electrical engineering , physics , engineering , quantum mechanics , composite material
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.