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Recently, IEEE 802.15.4a has specified a UWB PHY for low-rate commutation with ranging capability for wireless personnel area and sensor network applications. Related work is reported on low-rate energy-efficient UWB radios. A combination of the burst position modulation (BPM) and binary phase shift keying (BPSK) is adopted. With different coding rate, bursts per symbol, and chips per burst, the mean...
A 2.4-GHz fully-differential RF front-end on 0.18-mum CMOS technology for wireless sensor network (WSN) applications consuming 4.8-mW from a 1.8-V supply is presented. The direct conversion RF-front end comprises of low-noise amplifier (LNA), I/Q direct-conversion mixers, quadrature LO generator and LO buffers. By employing conventional source degenerated LNA, passive mixer, to eliminate flicker noise,...
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