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Miniature integrated solution – 5mm x 5mm CDMA450 duplexer

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article image The highly integrated duplexer from Temex.

TEMEX, one of the worldwide leaders in the field of high-performance time and frequency components and sub-systems, has launched an integrated duplexer for CDMA450 Systems in a 5mm x 5mm package.

Available from Braemac , this new duplexer is the key RF component for CDMA handsets.

The development of new SAW chips and the use of integrated passive devices is a new step in the miniaturisation, particularly challenging at low radio frequency.

Temex has now integrated a complete duplexer in a hermetically sealed package just slightly larger than a single SAW filter.

According to Temex, it is the first SAW manufacturer matching the level of performance required by the 3GPP2 international standard.

This new duplexer, the TMX DU W307, replaces two individual SAW filters and three passive components, with clear advantages such as :

* High level of integration, which simplifies the CDMA450 handset design

* Cost Saving - one device instead of five

* Board space saving - PCB surface is four times smaller

* Totally lead free - compliant with RoHs regulation 2002/95.

The CDMA450 duplexer is designed to allow handsets to meet the 3GPP2 specifications, particularly the Single Tone Desensitisation Test.

This duplexer has already been approved and referenced by the major CDMA chipmakers thanks to its isolation level, which is superior to the competition by more than 10dB. Its power handling is superior to 1W for a life time of over five years.

This CDMA450 duplexer offers customers a smaller and highly integrated solution to be fast time-to-market.

This duplexer will help handset manufacturers reduce their total BOM cost and the size of theirs products, according to Temex.

To date, no competing products meet the 3GPP2 specifications and Temex is the only manufacturer to achieve this breakthrough technical performance.

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