A miniaturized ultrasonic power delivery system
Part Of
IEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings
Start Page
440
End Page
443
Date Issued
2014-10
Author(s)
Abstract
A pair of 4.4mm diameter lead zirconium titanate (PZT) discs were employed for ultrasonic power delivery across biological tissue. The overall system, including the biological tissue and matching layers, was analyzed and modeled as a two-port network with an associated scattering matrix. The matrix coefficients were obtained experimentally in order to determine the maximum available gain (MAG) and optimal operating frequency of the system. The results were validated against finite element analysis simulations, and together they suggest that the miniaturized ultrasonic power delivery system has higher power transfer efficiency than a comparably-sized inductively coupled design at coupling distances greater than 9.5-15.5mm depending on the medium.
Event(s)
10th IEEE Biomedical Circuits and Systems Conference, BioCAS 2014, Lausanne, 22 October 2014 - 24 October 2014
Subjects
implantable devices
path loss
power transfer efficiency
ultrasonic power transfer
wireless power transfer
SDGs
Publisher
IEEE
Type
conference paper