Title :
Tunable loaded line phase shifters for microwave applications
Author :
Karabey, Dnur Harnza ; Goelden, Felix ; Gaebler, Alexander ; Strunck, Sebastian ; Jakoby, Rolf
Author_Institution :
Inst. of Microwave Eng. & Photonics, Tech. Univ. Darmstadt, Darmstadt, Germany
Abstract :
This paper presents the design and realization of a tunable periodically loaded slot line phase shifters. The tunability is achieved by using liquid crystal (LC) as a tunable dielectric. Two prototypes are fabricated based on a printed circuit board (PCB) - LC - PCB structure for 12 GHz and a glass - LC - glass structure for 18 GHz. Measurements are performed and the figure of merits of the phase shifters are determined as 47 °/dB and 42 °/dB, respectively.
Keywords :
dielectric-loaded waveguides; glass; liquid crystal devices; phase shifters; printed circuits; slot line components; PCB - LC - PCB structure; frequency 12 GHz; frequency 18 GHz; glass - LC - glass structure; liquid crystal; microwave application; printed circuit board; tunable dielectric; tunable loaded line phase shifter; tunable periodically loaded slot line phase shifter; Antennas; Electrodes; Lead; Silicon compounds; Strontium; Substrates; Phase shifters; tunable circuits and devices;
Conference_Titel :
Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-61284-754-2
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2011.5972634
