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Design of a Tunable All-Digital UWB Pulse Generator CMOS Chip for Wireless Endoscope

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2 Author(s)
Chul Kim ; Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia ; Nooshabadi, S.

A novel tunable all-digital, ultrawideband pulse generator (PG) has been implemented in a standard 0.18-?? m complementary metal-oxide semiconductor (CMOS) process for implantable medical applications. The chip shows that an ultra-low dynamic energy consumption of 27 pJ per pulse without static current flow at a 200-MHz pulse repetition frequency (PRF) with a 1.8-V power supply and low area of 90 ?? 50 ??m2. The PG generates tunable pulsewidth, amplitude, and transmit (Tx) power by using simple circuitry, through precise timing control of the H-bridge output stage. The all-digital architecture allows easy integration into a standard CMOS process, thus making it the most suitable candidate for in-vivo biotelemetry applications.

Published in:

Biomedical Circuits and Systems, IEEE Transactions on  (Volume:4 ,  Issue: 2 )