DocumentCode
28939
Title
Electronically scanned Rotman lens antenna with liquid crystal phase shifters
Author
Christie, Samuel ; Cahill, Ronan ; Mitchell, Neil ; Munro, Y. ; Manabe, Akira
Author_Institution
Inst. of Electron., Commun. & Inf. Technol. (ECIT), Queen´s Univ. Belfast, Belfast, UK
Volume
49
Issue
7
fYear
2013
fDate
March 28 2013
Firstpage
445
Lastpage
447
Abstract
The performance of a Rotman lens, which forms fixed beams at 0°, ±15° and ±30°, is augmented using liquid crystal phase shifters to simultaneously steer each beam by up to ±7.5°. Measured results are used to demonstrate that the true time delay property of the antenna and voltage controlled phase shifters can be exploited to provide continuously scanned beams with full coverage over an angular range of ±37.5°, and with operation over the band 6-10 GHz.
Keywords
lens antennas; liquid crystals; phase shifters; electronically scanned Rotman lens antenna; fixed beam; frequency 6 GHz to 10 GHz; liquid crystal phase shifter; scanned beam; time delay property; voltage controlled phase shifter;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2013.0020
Filename
6504954
Link To Document