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Design study on a compact, high performance SAW duplexer

In this paper various design aspects concern- ing SAW duplexers are presented. Special focus is placed on an integrated lumped matching network, which allows to save space within the LTCC package. This corresponds with the trend of miniaturization of RF front-end components for cellular phones. To show the feasibility of this approach a SAW duplexer has been designed accordingly. In the design process two different modelling techniques for the electromagnetic computation of the package are compared in terms of their accuracies. Simulation and measurement of the device agree very well.