Towards a closed-loop transmitter system with integrated class-D amplifier for coupling-insensitive powering of implants

Virgilio Valente, Clemens Eder, Andreas Demosthenous, Nick Donaldson

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

6 Citations (Scopus)

Abstract

The efficiency of an inductive power transfer link is greatly affected by misalignment between the coils, caused by the patient's movement, after implantation. In this paper we present the preliminary design of a coupling-insensitive system with an integrated class-D transmitter, suitable for powering epidural stimulation implants. The operation of the system is based on closed-loop modulation of the power delivered to the implant, to compensate for losses of coupling between coils after implantation. An integrated transmitter with efficiencies above 90% was designed to operate between 1 MHz and 14 MHz. The circuit design employs 0.18-um high-voltage CMOS technology. Simulations are presented to verify the operation of the circuit.

Original languageEnglish
Title of host publication2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012
Pages29-32
Number of pages4
DOIs
Publication statusPublished - 1 Dec 2012
Externally publishedYes
Event2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012 - Seville, Seville, Spain
Duration: 9 Dec 201212 Dec 2012

Publication series

Name2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012

Conference

Conference2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012
CountrySpain
CitySeville, Seville
Period9/12/1212/12/12

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