Escalona, OJ, Velasquez, JJ, Waterman, N, Chirwa, L and Anderson, JMCC (2010) Transcutaneous Dual Tuned RF Coil System Voltage Gain and Efficiency Evaluation for a Passive Implantable Atrial Defibrillator. In: Computing in Cardiology, Belfast-UK. IEEE. Vol 37 4 pp. [Conference contribution]
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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).
|Item Type:||Conference contribution (Poster)|
|Keywords:||Transcutaneous Atrial Defibrillation RF Coupled Coils Wireless Power MatLab Modeling|
|Faculties and Schools:||Faculty of Computing & Engineering|
Faculty of Computing & Engineering > School of Engineering
|Research Institutes and Groups:||Engineering Research Institute|
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
|Deposited By:||Professor Omar Escalona|
|Deposited On:||09 May 2012 13:26|
|Last Modified:||09 May 2012 13:26|
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