Polat, Ersin ; Kamrath, Fynn ; Matic, Stipo ; Tesmer, Henning ; Jiménez-Sáez, Alejandro ; Wang, Dongwei ; Maune, Holger ; Höft, Michael ; Jakoby, Rolf (2022)
Novel Hybrid Electric/Magnetic Bias Concept for Tunable Liquid Crystal Based Filter.
In: IEEE Journal of Microwaves, 2 (3)
doi: 10.1109/JMW.2022.3180227
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
This paper presents a novel hybrid bias concept for liquid crystal (LC) filter by using simultaneously electric and magnetic bias fields. It enables continuous tuning with a simplified electrode design, decreased number of electrodes and reduced bias voltage. Furthermore, the tuning efficiency is increased, since the homogeneous bias fields enable a full exploitation of the LC's anisotropy. To demonstrate this concept, a novel reconfigurable gap waveguide two-pole bandpass filter with tunable center frequency and coupling elements is designed at 30GHz. Liquid crystal technology is applied as tunable material, whereby tunability of the center frequency and coupling elements is obtained by controlling the LC's effective permittivity. The presented filter's center frequency can be tuned from 28.88GHzto29.88GHz with a maximum bias voltage of 100 V, with a return loss of 20 dB and low insertion loss of only 1.65 to 1.95 dB.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Polat, Ersin ; Kamrath, Fynn ; Matic, Stipo ; Tesmer, Henning ; Jiménez-Sáez, Alejandro ; Wang, Dongwei ; Maune, Holger ; Höft, Michael ; Jakoby, Rolf |
| Art des Eintrags: | Bibliographie |
| Titel: | Novel Hybrid Electric/Magnetic Bias Concept for Tunable Liquid Crystal Based Filter |
| Sprache: | Englisch |
| Publikationsjahr: | Juli 2022 |
| Verlag: | IEEE |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | IEEE Journal of Microwaves |
| Jahrgang/Volume einer Zeitschrift: | 2 |
| (Heft-)Nummer: | 3 |
| DOI: | 10.1109/JMW.2022.3180227 |
| Kurzbeschreibung (Abstract): | This paper presents a novel hybrid bias concept for liquid crystal (LC) filter by using simultaneously electric and magnetic bias fields. It enables continuous tuning with a simplified electrode design, decreased number of electrodes and reduced bias voltage. Furthermore, the tuning efficiency is increased, since the homogeneous bias fields enable a full exploitation of the LC's anisotropy. To demonstrate this concept, a novel reconfigurable gap waveguide two-pole bandpass filter with tunable center frequency and coupling elements is designed at 30GHz. Liquid crystal technology is applied as tunable material, whereby tunability of the center frequency and coupling elements is obtained by controlling the LC's effective permittivity. The presented filter's center frequency can be tuned from 28.88GHzto29.88GHz with a maximum bias voltage of 100 V, with a return loss of 20 dB and low insertion loss of only 1.65 to 1.95 dB. |
| Fachbereich(e)/-gebiet(e): | 18 Fachbereich Elektrotechnik und Informationstechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Mikrowellentechnik und Photonik (IMP) > Mikrowellentechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Mikrowellentechnik und Photonik (IMP) |
| Hinterlegungsdatum: | 13 Jul 2022 06:40 |
| Letzte Änderung: | 21 Nov 2022 10:42 |
| PPN: | 501804099 |
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