Title :
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
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;
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.2006.249553
