Zheng, Yuliang ; Hristov, Atanas ; Giere, Andre ; Jakoby, Rolf (2008)
Suppression of Harmonic Radiation of Tunable PIFA by Thick-film BST Varactor Loading.
IEEE MTT-S International Microwave Symposium Digest.
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
Low-cost ferroelectric varactors based on Barium-Strontium-Titanate (BST) thick-film technology have been implemented in a tunable Planar Inverted-F Antenna (PIFA). A prototype is realized and measured. The harmonic radiation is evaluated in detail. It is shown that considerable RF voltage detunes the varactor and stimulates harmonic radiation in the varactor-loaded PIFA. It is discussed how such radiation can be suppressed by choosing the varactor?s tuning behavior. The passive BST thick-film varactors are proven to have advantages in reducing the harmonic excitation. When compared to a reference design using a silicon diode, the prototype shows suppressions on the second harmonic radiation up to 35.7 dB at -10 dBm input power. Possible suppression by BST thin-film varactors which are featured of low tuning voltages is also discussed.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2008 |
| Autor(en): | Zheng, Yuliang ; Hristov, Atanas ; Giere, Andre ; Jakoby, Rolf |
| Art des Eintrags: | Bibliographie |
| Titel: | Suppression of Harmonic Radiation of Tunable PIFA by Thick-film BST Varactor Loading |
| Sprache: | Englisch |
| Publikationsjahr: | 2008 |
| Veranstaltungstitel: | IEEE MTT-S International Microwave Symposium Digest |
| Kurzbeschreibung (Abstract): | Low-cost ferroelectric varactors based on Barium-Strontium-Titanate (BST) thick-film technology have been implemented in a tunable Planar Inverted-F Antenna (PIFA). A prototype is realized and measured. The harmonic radiation is evaluated in detail. It is shown that considerable RF voltage detunes the varactor and stimulates harmonic radiation in the varactor-loaded PIFA. It is discussed how such radiation can be suppressed by choosing the varactor?s tuning behavior. The passive BST thick-film varactors are proven to have advantages in reducing the harmonic excitation. When compared to a reference design using a silicon diode, the prototype shows suppressions on the second harmonic radiation up to 35.7 dB at -10 dBm input power. Possible suppression by BST thin-film varactors which are featured of low tuning voltages is also discussed. |
| Fachbereich(e)/-gebiet(e): | 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Mikrowellentechnik und Photonik (IMP) > Mikrowellentechnik 18 Fachbereich Elektrotechnik und Informationstechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Mikrowellentechnik und Photonik (IMP) |
| Hinterlegungsdatum: | 27 Jan 2012 15:20 |
| Letzte Änderung: | 05 Mär 2013 09:58 |
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