The following specification defines an SP3T (single pole three throw) switch for use in cellular and other wireless applications. It has both a standard and attenuated RX mode. The PE42650A uses Peregrine's UltraCMOSTM process and also features HaRPTM technology enhancements to deliver high linearity and exceptional harmonics performance. HaRPTM technology is an innovative feature of the UltraCMOSTM process providing upgraded linearity performance. The PE42650A is manufactured on Peregrine's UltraCMOSTM process, a patented variation of silicon-on-insulator (SOI) technology on a sapphire substrate, offering the performance of GaAs with the economy and integration of conventional CMOS.