A zero-IF single-chip transceiver for up to 22 Mb/s QPSK 802.11b wireless LAN

A zero-IF 2.4 GHz 22Mb/s IEEE802.11b transceiver including LNA, mixers, on-chip channel filtering, fully-integrated VCO, AGC, RSSI and synthesizer is realized in a 0.5 /spl mu/m BiCMOS process. The receiver has 5.4 dB NF, -4 dBm IIP3, and dissipates <300 mW. It delivers either 0 or 5 dBm, and consumes <370 mW at 3 V.