A BiCMOS ultra-wideband 3.1-10.6GHz front-end

A direct-conversion receiver for 500MHz-wide FCC-compliant UWB pulses in the 3.1-10.6GHz licensed band is fabricated using 0.18/spl mu/m SiGe BiCMOS. The packaged chip consists of a wideband LNA, filter, phase-splitter, 802.11a switchable notch filter, 3.1-10.6GHz LO amplifiers, mixers, and baseband channel-select filters/buffers. The average conversion gain, NF and input P1dB are 32dB, 4dB, and -41dBm respectively. The chip draws 30mA from 1.8V. Wireless testing of the receiver at 100Mbps reveals a 2.7/spl times/10/sup -3/ bit-error-rate at -81dBm sensitivity.