Piezo-tuned microwave filters based on dielectric resonators

The functional possibilities of microwave filters based on dielectric resonators (DR) are extended by the control of their central frequency (f/sub 0/) and attenuation-frequency characteristic (AFC). With this purpose, frequency tunable high Q-factor DRs were used. Commonly accepted designs of DR-fi...

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Bibliographic Details
Main Authors: Poplavko, Y.M., Molchanov, V.I., Prokopenko, Y.V., Cho, N.-J., You, Y.S.
Format: Conference Proceeding
Language:English
Subjects:
Automatic frequency control
Band pass filters
Communication system control
Costs
Dielectrics
Microwave filters
Mirrors
Q factor
Resonance
Resonator filters
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Summary:The functional possibilities of microwave filters based on dielectric resonators (DR) are extended by the control of their central frequency (f/sub 0/) and attenuation-frequency characteristic (AFC). With this purpose, frequency tunable high Q-factor DRs were used. Commonly accepted designs of DR-filters are unsuitable for such a control owing to the distortion of the AFC during controlling. Hence a new design of DR-based fitters is proposed, in which frequency is controlled with the undistorted shape of AFC. Based on these concepts, simple bandpass and bandstop frequency tuned filters were realized.
DOI:10.1109/CRMICO.1999.815216