A 191μW BPSK demodulator for data and power telemetry in biomedical implants

Li Lan Wang, Chia Hsiang Yang, Her-Ming Chiueh

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

1 Scopus citations

Abstract

This paper presents a fully digital binary-phase-shift keying (BPSK) demodulator for data and power telemetry. This demodulator recovers BPSK signals by detecting the symbol edge of the digitized received carrier. Parameters of the coupling coils, rectifier DC output, and data rate are taken into consideration in the early design stage. Given a limited coil size and quality factor, the demodulator achieves a data rate of 678kb/s with BER < 10 -9 at a carrier frequency of 13.56MHz. Fabricated in a 0.18μm CMOS process, the chip area is 0.445mm2. The chip core dissipates 191μW at 13.56MHz. A system prototype was developed to transmit data and power simultaneously through a pair of coils.

Original languageEnglish
Title of host publicationGLSVLSI 2013 - Proceedings of the ACM International Conference of the Great Lakes Symposium on VLSI
Pages119-123
Number of pages5
DOIs
StatePublished - 30 May 2013
Event23rd ACM International Conference of the Great Lakes Symposium on VLSI, GLSVLSI 2013 - Paris, France
Duration: 2 May 20133 May 2013

Publication series

NameProceedings of the ACM Great Lakes Symposium on VLSI, GLSVLSI

Conference

Conference23rd ACM International Conference of the Great Lakes Symposium on VLSI, GLSVLSI 2013
CountryFrance
CityParis
Period2/05/133/05/13

Keywords

  • binary-phase-shift keying
  • biomedical implants
  • mixed-signal integrated circuits

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  • Cite this

    Wang, L. L., Yang, C. H., & Chiueh, H-M. (2013). A 191μW BPSK demodulator for data and power telemetry in biomedical implants. In GLSVLSI 2013 - Proceedings of the ACM International Conference of the Great Lakes Symposium on VLSI (pp. 119-123). (Proceedings of the ACM Great Lakes Symposium on VLSI, GLSVLSI). https://doi.org/10.1145/2483028.2483074