Mr. Vikhyat J. Baxi Profile

Vikhyat J. Baxi

at Univ of South Australia

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Proceedings Article | 28 December 2006 Paper

Optimization of wireless and batteryless power transmission for micro implants in vivo environments

Vikhyat Baxi, Alex Hariz

Proceedings Volume 6415, 64151M (2006) https://doi.org/10.1117/12.713741

KEYWORDS: Inductance, Resistance, Electromagnetic simulation, Transformers, Electronic components, Magnetism, Copper, Microtechnology, Wireless energy transfer, Transmitters

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For quite some time implantable electronic devices have been a topic of intense research. Such devices play a vital role in saving lives. Batteries were to the main source of power for micro implants in the body, and the quest has been to realize long life batteries. However, the battery size and limited lifetimes have fuelled the search for more practical alternatives¹. Hence the concept of Transcutaneous Energy Transmission (TET) has become a major aim of research in microtechnology for supplying power to micro implants. Among many other endeavours, research to optimize the efficient wireless power transmission to implants², thereby increasing lifetime of the implant and the comfort of the patient, has never been more intense. In this paper we propose to present research findings related to determination of parameters for optimal design of the power transmission system, including frequency spectrum, orientation, and component sizes. We have particularly focused on coil design implementation. Coil design is critical to efficient power transmission and data reception. We have looked at the two spiral geometries³ with different aspect ratios. Coupling factor, mutual inductance of the coil, quality factor Q, and optimal distance between transmitter and receiver units are to be investigated. Electromagnetic simulation is to be carried out using EM3DS simulation tool for integrated inductor design. It gives us an estimation of the coupling efficiency of the coil and power efficiency of the link at specified design geometries.

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