Title :
Piezoelectric Tuned LTCC Bandpass Filters
Author :
Al-Ahmad, Mahmoud ; Matz, Richard ; Russer, Peter
Author_Institution :
Corporate Technol., Siemens AG, Munich
Abstract :
A piezoelectrically tuned second order LTCC bandpass filter with 46% measured tuning range is presented. The filter incorporates a novel parallel-plate capacitor which is tuned by a piezoelectrically moved electrode. The center frequency of the filter shifts from 1.28 GHz to 1.8 GHz with a preserved insertion loss and quality factor
Keywords :
UHF filters; band-pass filters; crystal filters; 1.28 to 1.8 GHz; LTCC bandpass filters; UHF; low temperature co-fired ceramic; parallel-plate capacitor; piezoelectric materials; piezoelectric tuning; tunable filter; varactors; Band pass filters; Capacitors; Ceramics; Electrodes; Frequency; Insertion loss; Microstrip filters; Q factor; Resonator filters; Tuning; Bonding; ceramics; piezoelectric materials; tunable filter; varactors;
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249765
