Title :
A tunable bandpass BAW-filter architecture and its application to WCDMA filter
Author :
Carpentier, J.F. ; Tilhac, C. ; Caruyer, G. ; Dumont, Fabien ; Parat, Guy ; Ancey, P.
Author_Institution :
STMicroelectron., Central R&D, Crolles, France
Abstract :
We present a tunable bandpass BAW-filter based in a first step on a hybrid integration concept to demonstrate the validity of our architecture and to evaluate the potential of such filters. The filter consists of two cascaded lattices incorporating four BAW resonators, coupled with high-Q inductors and wide tuning range active varactors. The simulated results show that it is possible to compensate ±1% deviation on the filter center frequency. The prototype is currently in manufacturing and the experimental results are available for the conference.
Keywords :
acoustic resonator filters; band-pass filters; bulk acoustic wave devices; cascade networks; code division multiple access; varactors; BAW devices; BAW filter architecture; BAW resonators; RF filter; WCDMA filter; active varactors; automatic tuning; cascaded lattices; filter center frequency; high-Q inductors; hybrid integration; tunable bandpass filter; Active inductors; Band pass filters; Frequency; Lattices; Manufacturing; Multiaccess communication; Prototypes; Resonator filters; Tuning; Varactors;
Conference_Titel :
Microwave Symposium Digest, 2005 IEEE MTT-S International
Print_ISBN :
0-7803-8845-3
DOI :
10.1109/MWSYM.2005.1516564
