Recent measurements of compact electronically tunable liquid crystal phase shifter in rectangular waveguide topology

A low-weight, compact, tunable phase shifter based on liquid crystal technology is presented. It is designed in a hollow waveguide topology with a dielectric filled cross-section. The operational frequency range is 21–29 GHz, but data up to 35 GHz have been obtained and are presented. The device off...

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Veröffentlicht in:	Electronics letters 2013-10, Vol.49 (21), p.1345-1347
Hauptverfasser:	Weickhmann, C, Nathrath, N, Gehring, R, Gaebler, A, Jost, M, Jakoby, R
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Circuit properties compact electronically tunable liquid crystal phase shifter Cross sections dielectric filled cross‐section Dielectrics dielectric‐loaded waveguides Electric, optical and optoelectronic circuits Electronics Exact sciences and technology frequency 21 GHz to 29 GHz Frequency ranges hollow waveguide topology liquid crystal devices Liquid crystals Medical devices Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits microwave phase shifters Microwave technology Noise levels Phase shifters rectangular waveguide topology Topology
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Beschreibung
Zusammenfassung:	A low-weight, compact, tunable phase shifter based on liquid crystal technology is presented. It is designed in a hollow waveguide topology with a dielectric filled cross-section. The operational frequency range is 21–29 GHz, but data up to 35 GHz have been obtained and are presented. The device offers more than 140° phase shift peak per dB insertion loss and 110–130°/dB in the desired range.
ISSN:	0013-5194 1350-911X 1350-911X
DOI:	10.1049/el.2013.2281