14 GHz tunable filter based on waveguide-dielectric resonators

14 GHz tunable filter based on waveguide-dielectric resonators

Described are microwave four-pole waveguide filters electronically tuned by planar (Ba,Sr)TiO/sub 3/ film ferroelectric capacitors. The filters are tuned due to variation of ferroelectric capacitance with DC controlling voltage. Parameters of K/sub u/-band filters are the following: bandwidth for 1...

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Bibliographische Detailangaben
Hauptverfasser: Buslov, O.Yu, Keys, V.N., Kozyrev, A.B., Kotelnikov, I.V., Kulik, P.V.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Bandwidth
Capacitance
Capacitors
Ferroelectric films
Ferroelectric materials
Insertion loss
Microwave filters
Planar waveguides
Resonator filters
Voltage control
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Zusammenfassung:Described are microwave four-pole waveguide filters electronically tuned by planar (Ba,Sr)TiO/sub 3/ film ferroelectric capacitors. The filters are tuned due to variation of ferroelectric capacitance with DC controlling voltage. Parameters of K/sub u/-band filters are the following: bandwidth for 1 dB level is /spl sim/0.8%, range of tuning is 260 MHz (/spl sim/1.8%); insertion losses are less than 3 dB.
DOI:10.1109/CRMICO.2003.158909