Please use this identifier to cite or link to this item: https://doi.org/10.1109/TMTT.2019.2901674
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dc.titleWireless Power Transfer Antenna Alignment Using Intermodulation for Two-Tone Powered Implantable Medical Devices
dc.contributor.authorZhang, Hao
dc.contributor.authorGAO SIPING
dc.contributor.authorNGO TUNG
dc.contributor.authorWu, Wen
dc.contributor.authorGUO YONGXIN
dc.date.accessioned2019-07-24T06:20:22Z
dc.date.available2019-07-24T06:20:22Z
dc.date.issued2019-05-01
dc.identifier.citationZhang, Hao, GAO SIPING, NGO TUNG, Wu, Wen, GUO YONGXIN (2019-05-01). Wireless Power Transfer Antenna Alignment Using Intermodulation for Two-Tone Powered Implantable Medical Devices 67 (5) : 1708-1716. ScholarBank@NUS Repository. https://doi.org/10.1109/TMTT.2019.2901674
dc.identifier.issn0018-9480
dc.identifier.issn1557-9670
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/156945
dc.description.abstract© 1963-2012 IEEE. Wireless power transfer (WPT) to the implantable medical devices (IMDs) often suffers from antenna radiation direction and polarization misalignments, which degrades the wireless power link efficiency. Although increasing the incident power density is able to solve the power hunger of IMDs, it poses safety issues to the human tissue. In this paper, an antenna alignment method using intermodulation is proposed to address WPT antenna misalignment in a safe way. Two-Tone (2T) waveform excitation is employed to enhance the rectification as well as to generate intermodulation. The intermodulation power is fed back via a magnetic resonant coupling link. Due to the monotonic relation between the intermodulation power and the degree of antenna misalignments, the receiving antenna (in body) can be aligned with the transmitting one (out body). Such a scheme has the advantages of less harm to human tissue and less interference between the 2T waveform excitation and the magnetic resonant coupling link. The whole system is theoretically analyzed and experimentally validated.
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.sourceElements
dc.subjectScience & Technology
dc.subjectTechnology
dc.subjectEngineering, Electrical & Electronic
dc.subjectEngineering
dc.subjectAntenna alignment
dc.subjectimplantable medical devices (IMDs)
dc.subjectintermodulation
dc.subjecttwo-tone (2T) waveform excitation
dc.subjectwireless power transfer (WPT)
dc.subjectDESIGN
dc.subjectRECTENNA
dc.typeConference Paper
dc.date.updated2019-07-24T05:36:29Z
dc.contributor.departmentDEPT OF ELECTRICAL & COMPUTER ENGG
dc.contributor.departmentNUS NANOSCIENCE & NANOTECH INITIATIVE
dc.description.doi10.1109/TMTT.2019.2901674
dc.description.volume67
dc.description.issue5
dc.description.page1708-1716
dc.published.statePublished
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