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A CMOS Ultra Low-Power and Highly Efficient UWB-IR Transmitter for WPAN Applications

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3 Author(s)
Shengxi Diao ; Inst. of Microelectron., Agency for Sci., Singapore ; Yuanjin Zheng ; Chun-Huat Heng

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.

Published in:

Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:56 ,  Issue: 3 )

Date of Publication:

March 2009

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