Analysis And Design Of UWB RF Front-end

UWB(Ultra-Wide Band) technology is becoming more and more popular in recent years because of its high data-rate and low power dissipation for short distance wireless communications.It is a key solution of WPAN(Wireless Personal Area Network) with data-rate of max.480Mb/s and min.110Mb/s.Along with the progress of CMOS technology, the cost of the RF front-end is decreasing while the performance is improving,which makes it a trend to implement UWB front-end with CMOS technology.This thesis analyzed and designed the RF front-end for 3.1～4.8GHz MB-OFDM UWB Receiver,including low noise amplifier(LNA),down-conversion mixer and other supporting circuits.Besides,the receive chain is also designed.The RF front-end is taped-out as a part of the receive chain,both are mearsured.Based on the design and mearsurement results, power and performance optimizaitons are adopted and verified by postlayout simulaitons. The chip is implemented in Jazz 0.18μm RF CMOS process,test and simulation results confirmed the feasibility of the circuits for MB-OFDM UWB Recevier.The theis starts with detailed analysis of the UWB receiver's systematic parameters. After some comparisons,the zeor-IF architecture is adopted,then detail module performance assignment including the RF fonrt-end is introduced.The following chapters emphasize on the circuits design:a resistive feedback plus inductor degenerated LNA,gain control and input matching compensation are explored;a merged quadrature Gilbert-type down-conversion mixer,also with the realization of gain control;the whole RF front-end,other supporting modules and the complete receive chain are all introduced.The final chapter discribes the implementation,measurement and simulaiton of the designs,including the measurement of the first version of RF front-end and receive chain, the postlayout simulation of the improvement versions.