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Articles

A modified magnetic resonance wireless power transfer system for capsule endoscopy

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Pages 158-167 | Received 27 Oct 2018, Accepted 03 Mar 2019, Published online: 15 Mar 2019
 

ABSTRACT

Background: The current study presents a fully planar wireless power transfer (WPT) scheme with the aim of providing enough power for capsule endoscopy performance. The method’s implementation on patients is more convenient than that of the previous conventional WPT plans in which a cylindrical wire coil is placed around the patient’s body. In addition to this, while using the present printed power receiver structure, the capsule’s internal space of opens up for other components such as the image sensors and data transmitting components. To improve the efficiency, a two-layer printed coil has been used as the transmitter, a two-layer printed coil as the receiver and a power coil on the transmitter side excited at 13.56 MHz.Results: Applying this method, the efficiency has increased to more than 2% for the proposed structure. Moreover, the effect of the body tissue on power efficiency has been simulated and measured and the maximum specific absorption rate (SAR) value considered for the desired system. Conclusions: The obtained results indicate that the proposed system meets the medical standards requirements.

Disclosure Statement

The authors report no conflict of interest.

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