In this white paper, design requirements, best practice PCB layout, component selection and system design will be addressed. A highly integrated CDMA plus GPS RF front end design with measured performance characteristics will be used as a concrete example. The three Avago RF modules used are: the ACPM-7353 dual-band Power Amplifier Module designed for CDMA (code division multiple access) cellular and PCS; the ACFM-7103 multiplexer; and the ALM-1412 GPS Low Noise Amplifier (LNA) with Integrated Filter. These three compact components replace seven discrete components.