0.8 GHz to 2.4 GHz Tunable Ceramic Microwave Bandpass Filters

Title:: 0.8 GHz to 2.4 GHz Tunable Ceramic Microwave Bandpass Filters
Document type:: Konferenzbeitrag
Author(s):: Al-Ahmad, M.; Matz, R.; Russer, P.
Abstract:: A 200% tuning range of advanced integrated piezoelectric LTCC bandpass filters is presented. The filter incorporates a novel parallel-plate capacitor that can be tuned by a piezoelectrically movable electrode. In this prototype, the fabrication process is modified for better controlling the air-gap inside the capacitor. To our knowledge, the potential recorded tuning range from 0.8 GHz to 2.4 GHz is the highest continuous range that ever reported in bandpass filters.
Keywords:: microwave filters, circuit tuning, varactors, band-pass filters, UHF filters, Ceramics, varactor, crystal filters, parallel-plate capacitor, piezoelectric materials, tunable filter, fabrication process, frequency 0.8 GHz to 2.4 GHz, LTCC coupled microstrip lines, piezoelectric LTCC filters, piezoelectrically movable electrode, software defined radio, surface-mounted piezoceramic cantilever, tunable ceramic microwave bandpass filters
Book / Congress title:: Microwave Symposium, 2007. IEEE/MTT-S International
Year:: 2007
Pages:: 1615--1618
Print-ISBN:: 0149-645X
Fulltext / DOI:: doi:10.1109/MWSYM.2007.379995
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