Tunable RF filters using thin film barium strontium titanate based capacitors

Tunable RF filters using thin film barium strontium titanate based capacitors

Tunable lowpass and bandpass filters based on barium strontium titanate (BST) capacitors are reported. For the lowpass filter, 40% tunability was achieved at 9 V. Intermodulation distortion generated by the lowpass filters was also measured and predicted using a nonlinear model for the BST capacitor...

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Veröffentlicht in:2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157) 2001, Vol.3, p.1453-1456 vol.3
Hauptverfasser: Tombak, A., Ayguavives, F.T., Maria, J.-P., Stauf, G.T., Kingon, A.I., Mortazawi, A.
Format: Artikel
Sprache:eng
Schlagworte:
Band pass filters
Barium
Binary search trees
Capacitors
Distortion measurement
Intermodulation distortion
Radio frequency
Strontium
Titanium compounds
Transistors
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Beschreibung
Zusammenfassung:Tunable lowpass and bandpass filters based on barium strontium titanate (BST) capacitors are reported. For the lowpass filter, 40% tunability was achieved at 9 V. Intermodulation distortion generated by the lowpass filters was also measured and predicted using a nonlinear model for the BST capacitors. The bandpass filter showed 45% tunability with an applied DC bias of 10 V.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2001.967176