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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Tanabe, Y. Hang Wong Sanghoek Kim Ho, J.S. Poon, A.S.Y. |
| Copyright Year | 2012 |
| Description | Author affiliation: Department of Electrical Engineering, Stanford University, Room 237, Packard Electrical Engineering Building, 350 Serra Mall Stanford, CA 94035 (Tanabe, Y.; Hang Wong; Sanghoek Kim; Ho, J.S.; Poon, A.S.Y.) |
| Abstract | Wireless powering of implantable medical devices such as pacemakers, cardiac defibrillators and other devices for post-surgery monitoring and drug delivery enables device miniaturization and obviates risks associated with lead wires and battery replacement. Traditionally, inductively-coupled coils have been considered the primary candidate for power transfer since they operate at frequencies sufficiently low to ignore losses in tissue [1]. Recently, however, it was shown that the optimal frequency for wireless power transfer to a miniature implant is in the low-GHz range despite increased tissue absorption [2]. At low-GHz frequencies, the power transfer efficiency was significantly improved by considering transmitter structures more complex than the coil. In particular, the optimal transmitter was found to exhibit beam focusing, which invokes constructive and destructive interference to maximize the fields at the receiver while minimizing heating in tissue. The optimal transmitter, however, was derived in terms of a surface current distribution and was not physically realized [3], [4]. |
| Starting Page | 467 |
| Ending Page | 470 |
| File Size | 1388067 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781467310017 |
| e-ISBN | 9784885522703 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-10-29 |
| Publisher Place | Japan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electronics, Information and Communication Engineers (IEICE) |
| Subject Keyword | Antenna measurements Wireless communication Slot antennas Transmitters Magnetic separation Implants Current distribution |
| Content Type | Text |
| Resource Type | Article |
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