Energy-recycling integrated 6.78-Mbps data 6.3-mW power telemetry over a single 13.56-MHz inductive link

Sohmyung Ha, Chul Kim, Jongkil Park, Siddharth Joshi, Gert Cauwenberghs

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present a power/data telemetry IC with a new data modulation scheme and simultaneous power transfer through a single inductive link. Data-driven synchronized single-cycle shorting of the secondary LC tank conserves reactive power while inducing an instantaneous voltage change at the primary side. Cyclic on-off keying time-encoded symbol mapping of the shorting cycle allows transmission of two data bits per four carrier cycles with simultaneous power transfer during non-shorting cycles. All timing control signals for rectification and data transmission are generated from a low-power clock recovery comparator and 22-phase 2× PLL. The 1-mm2 65-nm CMOS IC delivers up to 6.3-mW power and transmits 6.78-Mbps data with a BER of less than 5.9×10-7 over a single 1-cm 13.56-MHz inductive link.

Original languageEnglish (US)
Title of host publication2014 Symposium on VLSI Circuits, VLSIC 2014 - Digest of Technical Papers
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479933273
DOIs
StatePublished - 2014
Event28th IEEE Symposium on VLSI Circuits, VLSIC 2014 - Honolulu, HI, United States
Duration: Jun 10 2014Jun 13 2014

Publication series

NameIEEE Symposium on VLSI Circuits, Digest of Technical Papers

Other

Other28th IEEE Symposium on VLSI Circuits, VLSIC 2014
CountryUnited States
CityHonolulu, HI
Period6/10/146/13/14

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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