A highly-integrated tri-band/quad-mode SiGe BiCMOS RF-to-baseband receiver for wireless CDMA/WCDMA/AMPS applications with GPS capability

A 0.5 μm SiGe BiCMOS single-chip receiver integrates three front-ends (LNA, RF-to-IF mixer, VGA) for the cellular, PCS/IMT and GPS frequency bands, a shared I/Q demodulator, IF VCO, and UHF LO buffers. It has 2.0 dB NF and -0.6 dBm IIP3 in the cellular CDMA mode and 2.3 dB NF and -7 dBm IIP3 in the PCS mode with <150 mW at 3 V.