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Research Article |

An Effective Dual-Band Wireless Power Transfer (WPT) System using Transmission Line Equivalents for Medical Implants

Author(s): Nuha H. Abdulghafoor1*, and Zainab N. Abbas2

Published In : International Journal of Electrical and Electronics Research (IJEER)        Volume 13, Issue 4

Publisher : FOREX Publication

Published : 15 December 2025

e-ISSN : 2347-470X

Page(s) : 772-783

DOI: https://doi.org/10.37391/IJEER.130417

Abstract

There has been a pressing need for wireless power transfer due to its numerous applications, including integrated or embedded systems used in various fields, such as sensors and mobile devices, as well as medical devices implanted inside the human body. Traditional transmission methods have drawbacks in terms of protection and safety when used directly on the human body, as well as the requirement for continuous operation within the body. Therefore, wireless power transfer methods have emerged as a safe and reliable alternative, especially for medical implants. Several methods and techniques have been developed, initially operating on a single frequency. This has since been developed to utilize dual-band or dual-frequency systems, making them more adaptable to changing environments and enabling simultaneous power transmission and information exchange between the implant inside the body and the external component of the wireless power transfer system. This article presents an efficient dual-band wireless power transfer system for use in building multifunctional systems. It also demonstrates the compatibility between the operating and load circuits. It also features a reduction in energy losses resulting from unwanted mutual induction caused by the large number of inductive coils, whether on the supply side or the load side, which in turn enhances the efficiency of energy transfer sent and received by the load circuit located inside the human body, which reached approximately 60%, the values of reflection loss were reduced to a suitable level approaching 0 dB.

Keywords: Wireless Power Transfer, Dual-Band, Resonant, Inductive Coupling, Implant Medical Application.




Nuha H. Abdulghafoor*, Department of Electronic Engineering, College of Electrical Engineering, University of Technology- Iraq, Baghdad, Iraq; Email: nuha.h.abdulghafoor@uotechnology.edu.iq

Zainab N. Abbas, Department of Electrical Engineering, College of Electrical Engineering, University of Technology- Iraq, Baghdad, Iraq; Email: zainab.n.abbas@uotechnology.edu.iq

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Nuha H. Abdulghafoor, Zainab N (2025), An Effective Dual-Band Wireless Power Transfer (WPT) System using Transmission Line Equivalents for Medical Implants. IJEER 13(4), 772-783. DOI: 10.37391/IJEER.130417.