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An Approach to Transcutaneous Inductive Power and Data Link for Implantable Biomedical Microsystems

International Journal of Electrical and Electronics Engineering
© 2024 by SSRG - IJEEE Journal
Volume 11 Issue 11
Year of Publication : 2024
Authors : Kadiyam Venkata Sai Subramanyeswara Rao, Guntu Raja Rao, Kanchapogu Vaisakh
10.14445/23488379/IJEEE-V11I11P103
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How to Cite?

Kadiyam Venkata Sai Subramanyeswara Rao, Guntu Raja Rao, Kanchapogu Vaisakh, "An Approach to Transcutaneous Inductive Power and Data Link for Implantable Biomedical Microsystems," SSRG International Journal of Electrical and Electronics Engineering, vol. 11,  no. 11, pp. 23-29, 2024. Crossref, https://doi.org/10.14445/23488379/IJEEE-V11I11P103

Abstract:

This paper proposes a practical approach to wireless power and data communication systems for biomedical implants using an inductive power and data transfer link. The system comprises a class E power amplifier/transmitter, an Amplitude-Shift Keying (ASK) modulator, an Inductive Power and Data Link (IPDL) and an ASK demodulator. The modulation circuit comprises a capacitor and a MOSFET to switch the load of the Class-E transmitter between two states, satisfying both zero-voltage switching and derivative switching conditions, leading to higher DC to AC power transfer efficiency. This situation develops ASK data modulation in the class E transmitter. The developed IPDL contains an external class E transmitter part placed external to the human body to transfer wireless power and data to the internal receiver part (implanted device) for exciting and monitoring relevant nerves of damaged tissue. For the safety condition of the tissue, the IPDL system is operated at a selected lower carrier frequency of 4MHz, and the ASK modulator is envisioned to operate with a modulation index of 43% and a modulation rate of 4.3% with a data rate as 172Kbps. A practical IPDL system is presented with results of real-time simulation using TINA ver. 8 and MULTISIM ver12.0 software.

Keywords:

Wireless power transfer, Data transmission, Inductive link, Class-E power transmitter, Amplitude Shift Keying, Medical implant.

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