A stable wireless energy transmission system for gastrointestinal microsystems

Abstract

A wireless energy transmission system using a Helmholtz primary coil outside and a 3-dimensional secondary coil inside the body is introduced. It is designed to transmit stable power to a gastrointestinal microsystem regardless of its position and orientation when working in the gastric tract. Up to 310 mW of usable DC power can be delivered under worst-case geometrical conditions. Measured data of the system performance are presented and evaluated.

Keywords:

• Wireless energy transmission
• Inductive coupling
• Helmholtz coil
• 3D wireless power receiver

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.