Design of CMOS Transceivers for MB-OFDM UWB Applications

This chapter describes the design of transceiver architectures and circuits suited to frequency-hopping UWB applications. A direct-conversion UWB transceiver for Mode 1 OFDM applications employs three resonant networks and three phase-locked loops. Using a common-gate input stage, the receiver allows direct sharing of the antenna with the transmitter. Designed in 0.13-μm CMOS technology, the transceiver provides a total gain of 69–73 dB and a noise figure of 6.5–8.4 dB across three bands, and a TX 1-dB compression point of -10 dBm. The circuit consumes 105 mW from a 1.5-V supply. A frequency plan for a full-band transceiver is also described.