DefinePK

Abstract

In this paper, the mathematical analysis and optimization of inductive power transmission system with serial to parallel topology for implanted biomedical devices is presented. The mathematical analysis based on the mesh coupling method is used to determine the dissipated power on the implanted remote electronics. In addition, the reflected impedance method is used to calculate and optimized the efficient power transmission without and with the power amplifier resistance. The proposed relative distance separated between the two sides of the inductive link is 6 mm with a coefficient factor 0.09 and the remote load resistance is 300 O. The results show that efficiency with low input impedance is 78% and with higher input impedance is 40%. The efficiency is reduced approximately 51% when the power amplifier resistance is used as a series resistance with the transmitted LC-tank. The system optimization can be achieved by tuning the capacitor at the received LC-tank. The mathematical analysis is modeled and simulated in MATLAB.