Advanced microwave acoustic filters enabling advanced system concepts

Author

Bauernschmitt, Ulrich ; Block, Christian ; Hagn, Peter ; Klamm, Helmut ; Kovacs, Gunter ; Marksteiner, Stephan ; Metzger, Thomas ; Przadka, Andreas ; Riha, Gerd ; Ruppel, Clemens C W

Author_Institution

EPCOS AG, Munich

fYear

2008

fDate

27-30 May 2008

Firstpage

706

Lastpage

712

Abstract

This paper will discuss different concepts for the RF front-end of cellular phones which comprise quad band GSM and triple band WCDMA operation. Different system concepts require filters which meet different specifications. We will show a microwave acoustic duplexer that fulfills all these requirements and thus enables advanced system concepts. It will be shown that the combination of BAW (bulk acoustic wave) and SAW (surface acoustic wave) filters within a duplexer for WCDMA exhibits excellent performance and allows to eliminate the interstage filter in the Rx path.

Keywords

acoustic filters; bulk acoustic wave devices; cellular radio; code division multiple access; microwave filters; surface acoustic waves; RF front-end; bulk acoustic wave filter; cellular phones; duplexer; microwave acoustic filters; quad band GSM; surface acoustic wave filter; triple band WCDMA operation; Cellular phones; GSM; Microwave filters; Multiaccess communication; Power amplifiers; Power harmonic filters; Radio frequency; SAW filters; Switches; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Components and Technology Conference, 2008. ECTC 2008. 58th

Conference_Location

Lake Buena Vista, FL

ISSN

0569-5503

Print_ISBN

978-1-4244-2230-2

Electronic_ISBN

0569-5503

Type

conf

DOI

10.1109/ECTC.2008.4550050

Filename

4550050