UWB CMOS monocycle pulse generator

Authors:
Fabio Zito;Domenico Pepe;Domenico Zito
Affiliations:
Department of Information, Mathematics, Electronics and Transportation, "Mediterranea" University of Reggio Calabria, Reggio Calabria, Italy;Tyndall National Institute, Lee Maltings, Cork, Ireland;Department of Microelectronic Engineering and the Tyndall National Institute, University College Cork, Cork, Ireland
Venue:
IEEE Transactions on Circuits and Systems Part I: Regular Papers
Year:
2010

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Abstract

A low-complexity fully integrated ultrawideband (UWB) monocycle pulse generator realized in 90-nm CMOS technology by ST-Microelectronics is presented. The circuit provides a monocycle pulse when activated by a negative edge of an external trigger signal provided by a microcontroller by exploiting the operating principle of nonlinear waveform shapers. This pulse generator represents a building block of an innovative wearable system-on-chip UWB radar on silicon for cardiopulmonary monitoring. On-chip measurements show that the pulse generator provides monocycle pulses with a duration time equal to 380 ps and a peak-to-peak amplitude of 660 mV (including the losses of the microprobes, cables, and electrostatic-discharge-protected pads), which are in very good agreement with the postlayout simulations. The power consumption is 19.8 mW from a 1.2-V power supply.