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Hybrid BAW-SAW duplexer 08-03-07


Epcos released a hybrid duplexer. The prototypes of a combined BAW-SAW duplexer for W-CDMA Band II were completed in February 2007. They combine the advantages of the BAW and SAW filter technologies in a single component. BAW technology allows the manufacture of frequency-selective filters and duplexers for applications in which conventional SAW technology comes up against its limits and can no longer meet the electrical specifications. Thanks to BAW technology, the high power compatibility and low insertion loss of microwave ceramic filters and the miniaturization potential of SAW filters can be combined in a single product. In contrast, SAW filters allow very simple impedance and signal conversion. Epcos has combined these two strengths into a single duplexer by using a BAW filter with high power compatibility for the transmit filter in combination with low temperature drift and a SAW filter for the receive filter. The new duplexer is well suited for mobile phone applications using W-CDMA Band II. The LS06 BAW-SAW hybrid duplexer has a footprint of 3 x 2.5 mm2 and an insertion height of 1.1 mm.

Links:

www.epcos.de




 


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