Transcutaneous Dual Tuned RF Coil System Voltage Gain and Efficiency Evaluation for a Passive Implantable Atrial Defibrillator

OJ Escalona, JJ Velasquez, N Waterman, L Chirwa, JMCC Anderson

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

7 Citations (Scopus)

Abstract

Cardioversion of atrial fibrillation (AF) can be achieved by applying an electric shock to the heart (defibrillation). A cost-effective approach for internal cardioversion is by means of a subcutaneous passive implantable atrial defibrillator (PIAD). A circuit design using a dual tuned resonant circuit whose capacitance on the receiver side also serves as a voltage booster is proposed and evaluated. The circuit performance is characterised using a MATLAB based model and a PSpice simulation. The circuit exhibited inherent voltagegain stability with a reasonable voltage gain (VRx / VTx > 0 .3) . Computed link efficiency modelling, estimated high link efficiency values of about 63.63% at the 208 kHz resonant frequency (26 mm air gap between coils). The above theoretical characterisation wassupported by hardware prototyping which realised a system efficiency of 59.61% (best case).
Original languageEnglish
Title of host publicationUnknown Host Publication
Place of Publicationwww
PublisherIEEE
Pages569-572
Number of pages4
Volume37
Publication statusPublished - 15 Nov 2010
EventComputing in Cardiology - Belfast-UK
Duration: 15 Nov 2010 → …
http://www.cinc.org

Conference

ConferenceComputing in Cardiology
Period15/11/10 → …
Internet address

Keywords

  • Transcutaneous Atrial Defibrillation
  • RF Coupled Coils
  • Wireless Power
  • MatLab Modeling

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