An efficient wireless power link for high voltage retinal implant

Lihsien Wu, Zhi Yang, Eric Basham, Wentai Liu

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

28 Scopus citations

Abstract

The design and analysis of a power telemetry system with multiple output voltages is presented in this paper. The system includes a Class E power transmitter, cascaded resonant tank, diode rectifiers, reverse data telemetry and regulators. The power loss associated with voltage conversion is minimized by using a proposed cascaded resonant tank. Reverse telemetry senses the power level fluctuation due to the coil movement and reliably provides minimally required power for the implant. The power telemetry system provides 5 voltage levels (tunable up to ± 12V, ± 2.5V and ground), each supported by a dedicated integrated regulator except the ground. The maximum deliverable power is in excess of 100mW when power coils are separated by 1cm.

Original languageEnglish (US)
Title of host publication2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008
Pages101-104
Number of pages4
DOIs
StatePublished - Dec 1 2008
Event2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008 - Baltimore, MD, United States
Duration: Nov 20 2008Nov 22 2008

Publication series

Name2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008

Other

Other2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008
CountryUnited States
CityBaltimore, MD
Period11/20/0811/22/08

Keywords

  • High voltage
  • Power telemetry
  • Resonant tanks

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