DocumentCode :
594545
Title :
Design and application of a liquid crystal varactor based tunable coupled line for polarization agile antennas
Author :
Karabey, Onur Hamza ; Bausch, S. ; Bildik, Saygin ; Strunck, Sebastian ; Gaebler, Alexander ; Jakoby, Rolf
Author_Institution :
Inst. for Microwave Eng. & Photonics, Tech. Univ., Darmstadt, Germany
fYear :
2012
fDate :
Oct. 29 2012-Nov. 1 2012
Firstpage :
739
Lastpage :
742
Abstract :
This paper presents design and application of a varactor loaded tunable coupled line for a polarization agile antenna. Based on the investigations, a method is proposed to reduce the required varactor tunability. Later on, the results are verified by prototyping an antenna, which consists of a liquid crystal based tunable coupled line. The antenna operates at 13.75 GHz with a return loss of better than 10 dB. The measurement results confirm that the polarization state of the antenna can be changed continuously between linear and circular polarizations by applying a DC bias voltage to the varactors.
Keywords :
liquid crystal devices; microwave antennas; tuning; varactors; frequency 13.75 GHz; liquid crystal varactor; polarization agile antenna; polarization state; tunable coupled line; varactor tunability; Antenna measurements; Antennas; Capacitance; Polarization; Prototypes; Tuning; Varactors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Conference (EuMC), 2012 42nd European
Conference_Location :
Amsterdam
Print_ISBN :
978-1-4673-2215-7
Electronic_ISBN :
978-2-87487-026-2
Type :
conf
Filename :
6459335
Link To Document :
بازگشت