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A Near-Threshold, 0.16 nJ/b OOK-Transmitter With 0.18 nJ/b Noise-Cancelling Super-Regenerative Receiver for the Medical Implant Communications Service

TitleA Near-Threshold, 0.16 nJ/b OOK-Transmitter With 0.18 nJ/b Noise-Cancelling Super-Regenerative Receiver for the Medical Implant Communications Service
Publication TypeJournal Article
Year of Publication2013
AuthorsMa, C., C. Hu, J. Cheng, L. Xia, and P. Y. Chiang
JournalIEEE Transactions on Biomedical Circuits and Systems
VolumePP
Issue99
Pagination1 - 1
Date Published06/2013
ISSN1940-9990
Keywordslow power, low voltage, MICS, near-threshold, on-chip noise immunity, pre-distorting linearization, sub-harmonic injection locking, super-regenerative receiver, wireless body area network (WBAN)
Abstract

A 0.16 nJ/b MICS transmitter and 0.18 nJ/b super-regenerative receiver are demonstrated, where each is specifically designed to operate in the near-threshold region. The low-VDD transmitter utilizes a sub-harmonic injection-locked ring oscillator, edge combiner for frequency multiplication, and class-C power amplifier. The low-VDD receiver introduces a replica super-regenerative receiver as a method to reject common-mode noise sources, such as supply/substrate coupling, thereby reducing undesired self-oscillations and improving BER. Designed in a 90-nm CMOS process, the test-chip measurements show a sensitivity of ${-}80$ dBm at 500 kb/s and ${-}65$ dBm at 1 Mb/s, respectively, at a BER less than $10^{-3}$, with 340 $mu$W total power.

DOI10.1109/TBCAS.2013.2253555
Short TitleIEEE Trans. Biomed. Circuits Syst.
Refereed DesignationRefereed