Double-layer variable geometry inductor for energy harvesting applications

The inductive assemblies capable of changing their geometry under the pressure of some external force have been recently proposed for the electromagnetic energy harvesting utilization. The performed analysis has shown that the total inductance of such inductors can be altered in a considerable range, reflecting to the amount of the covered magnetic flux and subsequently to the induced voltage in the inductor's loop. Several anticipated biomedical applications, mainly for the low-power devices supply, where the lung or even the heart motion can be used as an external moving force, encourage the development of some new geometries, expecting to provide an extended and higher range of the inductance change. In this paper, the futuristic concept of the inductor with the two-layer geometry will be considered, using the partial inductance analysis method, developing a framework for the simulation of continuous stretching, along the direction normal to the inductor's surface.