Electronically scanned Rotman lens antenna with liquid crystal phase shifters. Issue 7 (1st March 2013)

• Record Type: Journal Article
• Authors: Christie, S.; Cahill, R.; Mitchell, N.; Munro, Y.; Manabe, A.
• Is Part Of: Electronics letters. Volume 49:Issue 7(2013)
• Page Start: 445
• Page End: 447
• Publication Date: 2013-03-01
• Subjects: frequency; lens antennas -- liquid crystals -- phase shifters; electronically scanned Rotman lens antenna -- liquid crystal phase shifter -- fixed beam -- time delay property -- voltage controlled phase shifter -- scanned beam -- frequency 6 GHz to 10 GHz; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2013.0020
• Languages: English
• ISSNs: 0013-5194

Abstract

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.