dc.contributor.author |
McCormick, John |
en |
dc.contributor.author |
Budgett, David |
en |
dc.contributor.author |
Hu, Aiguo |
en |
dc.date.accessioned |
2020-08-18T22:26:13Z |
en |
dc.date.issued |
2020-07-15 |
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dc.identifier.citation |
IEEE Transactions on Power Electronics 15 Jul 2020 |
en |
dc.identifier.issn |
0885-8993 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/52680 |
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dc.description.abstract |
Deeply implanted biomedical devices (DIBDs) are a challenging application of wireless power transfer because of the requirement for miniaturisation whilst minimising patient exposure to tissue heating. This work proposes a capacitively-coupled conductive power transfer method for DIBDs, which allows for the safe transfer of power into the body whilst using minimum implant volume. The method uses parallel insulated capacitive electrodes to couple uniform current flow into the tissue and implants. Analytical analyses are presented, which results in a two-port network that describes circuit operation. The two-port network is further simplified for typical DIBD applications where coupling to the external electrodes is low. This results in a simple circuit model of power transfer of which the parameters are easily obtained by experimental measurements. The proposed circuit model has been validated using circuit coupled finite element analysis (COMSOL) and benchtop experiments using a tissue phantom. In addition, the safety aspect of the method has been evaluated via COMSOL simulation of the specific absorption rate (SAR) for various implanted receiver dimensions and implantation depth. Finally, a completed power supply, unaffected by the implantation depth, running at 6.78MHz, delivering 10 mW deep into the body whilst meeting the IEEE C95.1 basic restriction is presented. |
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dc.publisher |
Institute of Electrical and Electronics Engineers |
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dc.relation.ispartofseries |
IEEE Transactions on Power Electronics |
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dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
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dc.rights |
© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be
obtained for all other uses, in any current or future media, including
reprinting/republishing this material for advertising or promotional purposes, creating new
collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted
component of this work in other works. |
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dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.rights.uri |
https://www.ieee.org/publications/rights/author-posting-policy.html |
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dc.title |
A wireless power method for deeply implanted biomedical devices via capacitively-coupled conductive power transfer |
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dc.type |
Journal Article |
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dc.identifier.doi |
10.1109/TPEL.2020.3009048 |
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dc.rights.holder |
Copyright: IEEE |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/OpenAccess |
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pubs.subtype |
Article |
en |
pubs.elements-id |
805513 |
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pubs.org-id |
Bioengineering Institute |
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pubs.org-id |
ABI Associates |
en |
pubs.org-id |
Engineering |
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pubs.org-id |
Department of Electrical, Computer and Software Engineering |
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pubs.record-created-at-source-date |
2020-07-15 |
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