Ferroelectric Tunable Bandpass Filters for Ka-Band Applications

Ferroelectric Tunable Bandpass Filters for Ka-Band Applications

This paper presents two 3-pole tunable bandpass coplanar filters that include BST ferroelectric capacitors, tunable from 28 GHz up to 37 GHz. Both filters consist of cascaded coplanar transmission resonators, loaded with high-quality factor discrete BST capacitors. The first design includes 6 capaci...

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Hauptverfasser: Courreges, S., Yuan Li, Zhiyong Zhao, Kwang Choi, Hunt, A., Papapolymerou, J.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Band pass filters
Binary search trees
Capacitance
Capacitors
Ferroelectric materials
Filter bank
Frequency
Q factor
Resonator filters
Tunable circuits and devices
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Beschreibung
Zusammenfassung:This paper presents two 3-pole tunable bandpass coplanar filters that include BST ferroelectric capacitors, tunable from 28 GHz up to 37 GHz. Both filters consist of cascaded coplanar transmission resonators, loaded with high-quality factor discrete BST capacitors. The first design includes 6 capacitors and the second one is loaded with 12 capacitors. The capacitance is varied from 60 fF up to 20 fF. A first fabrication was done only with fixed capacitances, in order to validate the model. The insertion loss was around 5 dB at 30 GHz.
DOI:10.1109/EUMC.2008.4751385