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Epcos UMTS duplexer is three times smaller

Posted: 10 Apr 2002 ?? ?Print Version ?Bookmark and Share

Keywords:saw duplexer? 2.1ghz saw duplexer? umts saw duplexer? cdma duplexer? 3g phone duplexer?

Epcos AG's 2.1GHz SAW duplexers measure 3.8-by-3.8-by-1.35mmthree times smaller than conventional microwave ceramic duplexers that measure 10-by-4.5-by-2mm.

The duplexers are key-components of 3G UMTS and CDMA phones, separating the signals sent and received simultaneously at different frequencies and enabling trouble-free operation at high data rates.

The duplexers integrate SAW filters and other passive components for matching to the surrounding circuitry and for decoupling of the send and receive branches. The components use a multilayer LTCC substrate, which also doubles as the carrier for the SAW chip.

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