Appropriate Methods to Suppress Spurious FBAR Modes in Volume Production

Author

Link, A. ; Schmidhammer, Edgar ; Heinze, H. ; Mayer, M. ; Bader, B. ; Weigel, R.

Author_Institution

Inst. for Electron. Eng., Erlangen-Nuremberg Univ., Erlangen

fYear

2006

fDate

11-16 June 2006

Firstpage

394

Lastpage

397

Abstract

Standards like CDMA in combination with the US PCS band impose challenging demands on the duplexer unit in the RF circuit of mobile phones. FBAR filters are candidates to fulfil the latest cutting-edge requirements for temperature stability, insertion loss, power durability, bandwidth, and filter skirts. Unfortunately, these filters suffer from spurious resonator modes. In this work we have investigated several suppression methods, which are capable of being applied to volume production

Keywords

acoustic resonator filters; bulk acoustic wave devices; interference suppression; FBAR filters; RF circuit; acoustic resonator filters; duplexer unit; film bulk acoustic resonators; filter skirts; insertion loss; mobile phones; spurious FBAR modes; spurious resonator modes; temperature stability; Circuit stability; Film bulk acoustic resonators; Insertion loss; Mobile handsets; Multiaccess communication; Personal communication networks; Production; Radio frequency; Resonator filters; Temperature; Acoustic resonator filters; Acoustic resonators; BAW; FBAR; apodization; lateral edge design; spurious modes;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2006. IEEE MTT-S International

Conference_Location

San Francisco, CA

ISSN

0149-645X

Print_ISBN

0-7803-9541-7

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2006.249553

Filename

4014913