Development of High-Performance Wireless Power Transmission System for Self-Actuated Soft Capsule Endoscope

Wireless power transmission remains an open challenge for implantable devices as well as the active multifunctional capsule endoscope. This paper presents a development of high-powered wireless power transmission system for self-actuated soft capsule endoscope. The system consists of a transmitting unit and multiple receiving units. The transmitting unit is capable of generating a powerful uniform alternative magnetic field at multiple desired frequencies, while each of the receiving unit is designed to resonate with transmission signal at a desired frequency. As a result, the proposed wireless power transmission system can transfer 2.1 W power at frequency range from 70–100 kHz. This wireless power transmission system will be applied to control the morphology changing of each soft actuator to create the locomotion of the soft capsule endoscope.