A Reconfigurable FM-UWB Transceiver for Short-Range Wireless Communications

摘要

A 3.7–4.3 GHz frequency modulated ultra wideband (FM-UWB) transceiver with digitally reconfigurable subcarrier modulation index, UWB bandwidth and RF frequency band is fabricated in 0.18 $mu{rm m}$ CMOS. Considering short-range low-data-rate applications for wireless body area networks, RF front ends, consisting of an output amplifier with $-$14 dBm power level, an FM demodulator with $-$35 dBm sensitivity, and a preamplifier with 25 dB gain, 6 dB noise figure, are designed. The presented implementation including UWB bowtie antennas achieves a bit error rate (BER) of $10^{-6}$ at a data rate of 12.5 kb/s with a wireless communication distance of 60 cm and the power dissipation of 21 mW.