Title :
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
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;
Conference_Titel :
Electronic Components and Technology Conference, 2008. ECTC 2008. 58th
Conference_Location :
Lake Buena Vista, FL
Print_ISBN :
978-1-4244-2230-2
Electronic_ISBN :
0569-5503
DOI :
10.1109/ECTC.2008.4550050
