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Lookup NU author(s): Ahmad Abdulfattah,
Dr Charalampos Tsimenidis,
Professor Alex Yakovlev
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
In medical applications, implant devices are used to measure and remotely transmit the human biological signals to off-body devices. To date, providing the implantable medical devices (IMDs) with a constant and perpetual energy source remains an ongoing challenge. Accordingly, a far-field radio-frequency (RF) powering, represented by access point (AP), in conjunction with energy-harvesting capability is deployed in this paper for continuous powering of the IMDs. In this respect, theoretical analysis is used to establish safe powering conditions in order to comply with the safety limits established by the Federal Communications Commission. The feasibility of the wireless power transfer (WPT) to the IMDs is investigated by deriving analytical closed-form expressions for outage probability and average harvested energy, both of which are validated with Monte Carlo simulations. The findings of this study suggest not to exceed a distance of 0.5 m between the AP and the body surface, as the system performance has experienced high outage probability beyond this value, while the minimum allowable distance is 17 cm at a powering frequency of 403 MHz. It is also presented that the access point should be equipped with a minimum transmit power of 0.4 W in order to maintain an outage probability for the energy-harvesting to less than 10 −1 .
Author(s): Abdulfattah AN, Tsimenidis CC, Al-Jewad BZ, Yakovlev A
Publication type: Article
Publication status: Published
Journal: IEEE Access
Online publication date: 15/01/2019
Acceptance date: 23/12/2018
Date deposited: 14/01/2019
ISSN (electronic): 2169-3536
Data Source Location: http://dx.doi.org/10.17634/150074-3
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