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A Wireless, Fully-Passive Recorder for Medical Applications

Lee, Cedric W
http://orcid.org/0000-0003-3420-2615
http://rave.ohiolink.edu/etdc/view?acc_num=osu1470925792

Abstract Details

2016, Doctor of Philosophy, Ohio State University, Electrical and Computer Engineering.
This dissertation presents a fully-passive wireless neurorecording system for moni- toring very low level neuropotential. The subject new recording device has no battery, power harvester or regulator. As a result, it addresses concerns related to: (1) exter- nal wired connection (causing lack of mobility and risk of infection in patients), and (2) heat generation that may impact neural functioning. The developed sensor also exhibits large bandwidth and extremely high sensitivity down to 20 µVpp. Specifi- cally, this minimum detectable voltage is 25 times lower than previous fully-passive wireless neurorecorder. Further, for the first time, it allows detection of signals up to 5000 Hz. As a result, it can detect all neural signals of interest. A key aspect of the proposed sensor’s increased sensitivity is the introduction of an anti-parallel diode pair (APDP) to greatly reduce the second harmonic mixing conversion loss in the implant. Also, a smaller size antenna allows for a less intrusive implant. The implant is excited by an external interrogator possibly integrated within a baseball cap, to power the implanted recorder and reading the neurosignal.
John Volakis (Advisor)
Asimina Kiourti (Advisor)
Waleed Khalil (Committee Member)
Andrea Serrani (Committee Member)
163 p.
Electrical Engineering; Electromagnetics
neurosensing; apdp; subharmonic mixer; fully-passive; wireless; implant; neurosensor

Recommended Citations

Citations

  • Lee, C. W. (2016). A Wireless, Fully-Passive Recorder for Medical Applications [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1470925792

    APA Style (7th edition)

  • Lee, Cedric. A Wireless, Fully-Passive Recorder for Medical Applications. 2016. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1470925792.

    MLA Style (8th edition)

  • Lee, Cedric. "A Wireless, Fully-Passive Recorder for Medical Applications." Doctoral dissertation, Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1470925792

    Chicago Manual of Style (17th edition)

osu1470925792
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© 2016, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.