Title :
A CMOS Ultra Low-Power and Highly Efficient UWB-IR Transmitter for WPAN Applications
Author :
Diao, Shengxi ; Zheng, Yuanjin ; Heng, Chun-Huat
Author_Institution :
Inst. of Microelectron., Agency for Sci., Singapore
fDate :
3/1/2009 12:00:00 AM
Abstract :
This brief presents an on-off LC oscillator-based ultrawideband impulse radio (UWB-IR) transmitter for long-range application. A thorough theoretical analysis of the pulse generation is provided. Implemented in a 0.18-mum CMOS, the transmitter works in the UWB lower band of 3-5 GHz and consumes an ultralow average power of 236 muW at 1.8-V power supply. UWB pulses with a bandwidth of 2 GHz and 10-dB sidelobe suppression are generated. The transmitter can deliver a large differential output swing of 4.9 V under 100-Omega load with the highest power efficiency of 25.4% to date. It is targeted for wireless sensor network (WSNs) and wireless personal area network (WPAN) applications.
Keywords :
CMOS integrated circuits; low-power electronics; oscillators; personal area networks; pulse generators; radio transmitters; ultra wideband communication; wireless sensor networks; CMOS ultra low-power electronics; LC oscillator; UWB-IR transmitter; WPAN applications; bandwidth 2 GHz; frequency 3 GHz to 5 GHz; impulse radio; pulse generation; size 0.18 mum; voltage 1.8 V; wireless personal area network; wireless sensor network; FCC; Power generation; Pulse amplifiers; Pulse generation; Pulse modulation; Pulse shaping methods; Radio transmitters; Ultra wideband technology; Wireless personal area networks; Wireless sensor networks; CMOS IC; FCC spectral mask; impulse radio (IR); low data rate; low duty cycle; low power; pulse generator; ultrawideband (UWB); wireless;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2009.2015369
