@Article{csse.2021.015544,
AUTHOR = {Bassm H. Abed, Jaber H. Majeed, Najma Abed Habeeb},
TITLE = {Optimization of Bio-Implantable Power Transmission Efficiency Based on Input Impedance},
JOURNAL = {Computer Systems Science and Engineering},
VOLUME = {38},
YEAR = {2021},
NUMBER = {1},
PAGES = {17--24},
URL = {http://www.techscience.com/csse/v38n1/42032},
ISSN = {},
ABSTRACT = {Recently, the inductive coupling link is the most robust method for powering implanted biomedical devices, such as micro-system stimulators, cochlear implants, and retinal implants. This research provides a novel theoretical and mathematical analysis to optimize the inductive coupling link efficiency driven by efficient proposed class-E power amplifiers using high and optimum input impedance. The design of the coupling link is based on two pairs of aligned, single-layer, planar spiral circular coils with a proposed geometric dimension, operating at a resonant frequency of 13.56 MHz. Both transmitter and receiver coils are small in size. Implanted device resistance varies from 200 Ω to 500 Ω with 50 Ω of stepes. When the conventional load resistance of power amplifiers is 50 Ω, the efficiency is 45%; when the optimum resonant load is 41.89 Ω with a coupling coefficient of 0.087, the efficiency increases to 49%. The efficiency optimization is reached by calculating the matching network for the external LC tank of the transmitter coil. The proposed design may be suitable for active implantable devices.},
DOI = {10.32604/csse.2021.015544}
}