- 20 July 2006 -

EPCOS starts volume production of BAW duplexers

EPCOS' innovative duplexers in bulk acoustic wave (BAW) technology have gotten off to a successful start: EPCOS, a manufacturer of passive electronic components headquartered in Munich, has begun volume production of B7633 series BAW duplexers and is supplying them to a leading US manufacturer of mobile phones.

BAW technology allows the production of frequency-selective filters and duplexers for applications in which conventional surface acoustic wave (SAW) technology comes up against its limits and cannot meet the required electrical specifications. BAW technology combines the high power compatibility of microwave ceramic filters with the compact dimensions of SAW filters. The new BAW duplexer is suited for mobile communications applications operating in the US PCS or WCDMA band II.

The footprint of the B7633 BAW duplexer is 5 x 5 mm² with an insertion height of 1.35 mm. The duplexer offers a low insertion loss of 3.6dB in the Rx band and 2.7dB in the Tx band and combines good Rx-Tx insulation values of 57dB in the Tx band with 44dB in the Rx band.

EPCOS, a market leader for SAW components is also a leading supplier of BAW duplexers for the high-growth market of CDMA and WCDMA mobile phones. A new and more highly miniaturized generation of BAW duplexers with a footprint of only 3.8 x 3.8 mm² is currently under development.

www.epcos.com