Cascaded Rotman lens fed circular array. Issue 6 (1st March 2019)

• Record Type: Journal Article
• Authors: Chepala, A.; Fusco, V.
• Is Part Of: Electronics letters. Volume 55:Issue 6(2019)
• Page Start: 300
• Page End: 302
• Publication Date: 2019-03-01
• Subjects: phase shifters -- antenna feeds -- antenna arrays -- beam steering -- array signal processing -- lens antennas; single Rotman lens -- Rotman lens fed circular array -- cascaded Rotman lenses -- beam shape -- beam steer -- single Rotman lens beam port -- frequency 9.3 GHz; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2018.7753
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A single Rotman lens fed circular array requires phase shifters to beam steer, whereas a two‐cascaded Rotman lens fed circular array can beam form and beam steer by simply exciting a single Rotman lens beam port. In this Letter, the authors show how cascaded Rotman lenses feeding a circular array can use this property in order to beam steer/shape and perform retrodirective action. Experimental validation at 9.3 GHz is given.