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A 2.5 Gpulse/s, 25 pJ/pulse, 0.18μm CMOS Impulse Radio UWB Transmitter Based on Dual-Polarity Distributed Waveform Generator

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3 Author(s)
Yunliang Zhu ; Dept. of Electr. & Comput. Eng., Univ. of Rochester, Rochester, NY ; Jianyun Hu ; Hui Wu

In this paper, we present a fully-integrated impulse radio UWB transmitter based on a newly-developed ultrafast pulse circuit technique, distributed waveform generator (DWG). A DWG time-interleaves multiple digital pulse generators, and then combines all generated pulses using a wideband on-chip transmission line. A DWG is low power and fully reconfigurable compared to other UWB pulse generation and shaping solutions. It also facilitates the implementation of digital modulation schemes such as on-off keying (OOK) and pulse position modulation (PPM) in the transmitter. A chip prototype with a 10-tap, 10 GS/s dual-polarity DWG was designed and implemented in 0.18 mum standard digital CMOS. The transmitter's pulse rate can be varied from 16 MHz to 2.5 GHz with an energy efficiency of 25 pj/pulse. The transmitted pulses with OOK and PPM modulation are successfully demonstrated using 32 Mb/s PRBS data.

Published in:

Silicon Monolithic Integrated Circuits in RF Systems, 2009. SiRF '09. IEEE Topical Meeting on

Date of Conference:

19-21 Jan. 2009

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