Radiative Wireless Power Transfer System using Circularly Polarised Transmitter-Receiver Antenna Module to Improve Power-Transfer-Efficiency

Joshi, AC and Dash, JC and Sarkar, D (2022) Radiative Wireless Power Transfer System using Circularly Polarised Transmitter-Receiver Antenna Module to Improve Power-Transfer-Efficiency. In: 16th European Conference on Antennas and Propagation, EuCAP 2022, 27 March - 1 April 2022, Madrid.

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Abstract

In this paper, a circular polarization based wireless power transfer system is proposed for implantable medical devices (IMDs). Initially, a sequentially rotated left-handed circular polarization (LHCP) array operating at 2.4 GHz is designed for transmitter. Similarly, for receiver a miniaturised LHCP implantable antenna is designed inside a skin box to develop the WPT link. To improve the power transfer efficiency (PTE) of the WPT link a parasitic patch is placed near the receiver antenna. Parasitic patch improves the transmission coefficient by 8 dB for separation distance of 100 mm between transmitter and receiver. It is also verified that the proposed WPT system is insensitive to the angular rotation and lateral shift of the transmitter while keeping the receiver stationary. Finally, the specific absorption rate (SAR) of the implanted device is evaluated to ensure the safety limits of the proposed system. © 2022 European Association for Antennas and Propagation.

Item Type:	Conference Paper
Publication:	2022 16th European Conference on Antennas and Propagation, EuCAP 2022
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to the Institute of Electrical and Electronics Engineers Inc.
Keywords:	Antenna arrays; Circular polarization; Efficiency; Inductive power transmission; Microwave antennas; Receiving antennas; Slot antennas; Transmitters, Circular polarization (leave-handed circular polarization); Implantable antennas; Lefthanded; Parasitic patch; Power transfer efficiency; Power transfer systems; Power transfers; Receiver antennas; Wireless power; Wireless power transfer, Energy transfer
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	06 Jun 2022 05:13
Last Modified:	06 Jun 2022 05:13
URI:	https://eprints.iisc.ac.in/id/eprint/73120

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