Title :
Tunable liquid crystal phase shifter for microwave frequencies
Author :
Goelden, F. ; Gaebler, A. ; Goebel, M. ; Manabe, A. ; Mueller, S. ; Jakoby, R.
Author_Institution :
Dept. of Microwave Eng., Tech. Univ. Darmstadt, Darmstadt
Abstract :
A tunable phase shifter using liquid crystal (LC) is presented. The device is fabricated in a fashion similar to LC displays which makes fabrication very simple compared, for example, to MEMS approaches. At the targeted operation frequency of 20 GHz the device offers a performance of above 60 differential phase shift per dB insertion loss and a minimum tuning speed of 340 ms.
Keywords :
liquid crystal devices; losses; microwave phase shifters; microwave photonics; LC device fabrication; differential phase shift; frequency 20 GHz; insertion loss; microwave frequency; targeted operation frequency; time 340 ms; tunable liquid crystal phase shifter; tuning speed;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.1168
