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

fYear

2005

fDate

12-17 June 2005

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2005 IEEE MTT-S International

ISSN

01490-645X

Print_ISBN

0-7803-8845-3

Type

conf

DOI

10.1109/MWSYM.2005.1516564

Filename

1516564