Liquid crystal based low‐loss phase shifter for W‐band frequencies. Issue 23 (1st November 2013)

• Record Type: Journal Article
• Authors: Jost, M.; Weickhmann, C.; Strunck, S.; Gäbler, A.; Fritzsch, C.; O.H. Karabey, ; Jakoby, R.
• Is Part Of: Electronics letters. Volume 49:Issue 23(2013)
• Page Start: 1460
• Page End: 1462
• Publication Date: 2013-11-01
• Subjects: liquid crystal devices -- millimetre wave phase shifters -- permanent magnets -- waveguide components; liquid crystal based low loss phase shifter -- W‐band frequency -- LC based hollow waveguide phase shifter -- permanent magnets -- passive phase shifters -- frequency 80 GHz to 110 GHz -- loss 2.1 dB to 2.7 dB; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2013.2830
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A novel liquid crystal (LC) based hollow waveguide phase shifter with an LC section of 14.6 mm is presented, operating at 80–110 GHz. As a proof‐of‐concept, the phase shifter is biased by using permanent magnets, which results in a differential phase shift of 307°–318° and an insertion loss of 2.1–2.7 dB in the desired frequency range of 99–105 GHz. Hence, a phase shifter figure of merit of 118°–148°/dB is determined, which are to the authors' knowledge the highest values in this frequency range for passive phase shifters.