A showcase of ÉTS researchers’ publications and other contributions

A modified wireless power transfer system for medical implants


Downloads per month over past year

Fadhel, Yosra Ben, Ktata, Sana, Sedraoui, Khaled, Rahmani, Salem and Al-Haddad, Kamal. 2019. « A modified wireless power transfer system for medical implants ». Energies, vol. 12, nº 10.
Compte des citations dans Scopus : 29.

[thumbnail of Al Haddad K 2019 18942.pdf]
Al Haddad K 2019 18942.pdf - Published Version
Use licence: Creative Commons CC BY.

Download (12MB) | Preview


Wireless Power Transfer (WPT) is a promising technique, yet still an experimental solution, to replace batteries in existing implants and overcome the related health complications. However, not all techniques are adequate to meet the safety requirements of medical implants for patients. Ensuring a compromise between a small form factor and a high Power Transfer Efficiency (PTE) for transcutaneous applications still remains a challenge. In this work, we have used a resonant inductive coupling for WPT and a coil geometry optimization approach to address constraints related to maintaining a small form factor and the efficiency of power transfer. Thus, we propose a WPT system for medical implants operating at 13.56 MHz using high-efficiency Complementary Metal Oxide-Semiconductor (CMOS) components and an optimized Printed Circuit Coil (PCC). It is divided into two main circuits, a transmitter circuit located outside the human body and a receiver circuit implanted inside the body. The transmitter circuit was designed with an oscillator, driver and a Class-E power amplifier. Experimental results acquired in the air medium show that the proposed system reaches a power transfer efficiency of 75.1% for 0.5 cm and reaches 5 cm as a maximum transfer distance for 10.67% of the efficiency, all of which holds promise for implementing WPT for medical implants that don’t require further medical intervention, and without taking up a lot of space.

Item Type: Peer reviewed article published in a journal
Al Haddad, Kamal
Affiliation: Génie électrique
Date Deposited: 11 Jul 2019 13:55
Last Modified: 11 Nov 2019 15:57

Actions (login required)

View Item View Item