Agrawal, Prannoy ; Kienemund, Daniel ; Walk, Dominik ; Matic, Stipo ; Bohn, Nicole ; Häuser, Kevin ; Fink, Thomas ; Abrecht, Mike ; Bigler, Walter ; Binder, Joachim R. ; Jakoby, Rolf ; Maune, Holger (2021)
Suppression of Acoustic Resonances in BST-Based Bulk-Ceramic Varactors by Addition of Magnesium Borate.
In: Crystals, 11 (7)
doi: 10.3390/cryst11070786
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
This work presents a method for reducing acoustic resonances in ferroelectric barium strontium titanate (BST)-based bulk ceramic varactors, which are capable of operation in high-power matching circuits. Two versions of parallel-plate varactors are manufactured here: one with pure BST and one with 10 vol-% magnesium borate, Mg₃B₂O₆ (MBO). Each varactor includes a 0.85-mm-thick ferroelectric layer. Acoustic resonances that are present in the pure BST varactor are strongly suppressed in the BST-MBO varactor and, hence, the Q-factor is increased over a wide frequency range by the addition of small amounts of a low-dielectric-constant (LDK) MBO. Although the tunability is reduced due to the presence of non-tunable MBO, the increased Q-factor extends the varactor’s availability for low-loss and high-power applications.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Agrawal, Prannoy ; Kienemund, Daniel ; Walk, Dominik ; Matic, Stipo ; Bohn, Nicole ; Häuser, Kevin ; Fink, Thomas ; Abrecht, Mike ; Bigler, Walter ; Binder, Joachim R. ; Jakoby, Rolf ; Maune, Holger |
| Art des Eintrags: | Bibliographie |
| Titel: | Suppression of Acoustic Resonances in BST-Based Bulk-Ceramic Varactors by Addition of Magnesium Borate |
| Sprache: | Englisch |
| Publikationsjahr: | 2021 |
| Ort: | Darmstadt |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Crystals |
| Jahrgang/Volume einer Zeitschrift: | 11 |
| (Heft-)Nummer: | 7 |
| Kollation: | 12 Seiten |
| DOI: | 10.3390/cryst11070786 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | This work presents a method for reducing acoustic resonances in ferroelectric barium strontium titanate (BST)-based bulk ceramic varactors, which are capable of operation in high-power matching circuits. Two versions of parallel-plate varactors are manufactured here: one with pure BST and one with 10 vol-% magnesium borate, Mg₃B₂O₆ (MBO). Each varactor includes a 0.85-mm-thick ferroelectric layer. Acoustic resonances that are present in the pure BST varactor are strongly suppressed in the BST-MBO varactor and, hence, the Q-factor is increased over a wide frequency range by the addition of small amounts of a low-dielectric-constant (LDK) MBO. Although the tunability is reduced due to the presence of non-tunable MBO, the increased Q-factor extends the varactor’s availability for low-loss and high-power applications. |
| Zusätzliche Informationen: | Keywords: barium strontium titanate (BST); magnesium borate; acoustic resonances; electrostriction; bulk-ceramics |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik |
| Fachbereich(e)/-gebiet(e): | 18 Fachbereich Elektrotechnik und Informationstechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Mikrowellentechnik und Photonik (IMP) |
| Hinterlegungsdatum: | 06 Dez 2023 09:03 |
| Letzte Änderung: | 06 Dez 2023 09:03 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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Suppression of Acoustic Resonances in BST-Based Bulk-Ceramic Varactors by Addition of Magnesium Borate. (deposited 03 Sep 2021 12:32)
- Suppression of Acoustic Resonances in BST-Based Bulk-Ceramic Varactors by Addition of Magnesium Borate. (deposited 06 Dez 2023 09:03) [Gegenwärtig angezeigt]
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