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A recent study on witricity (wireless electricity) has demonstrated that wireless energy can be delivered over a moderate distance using strongly coupled magnetic resonance. The objective of this work is to apply the witricity technology to the problem of powering a wireless Body Sensor Network (wBSN). The theory of witricity is investigated using coupled mode theory. Compact witricity resonators...
Witricity is a newly developed technique for wireless energy transfer. This paper presents a frequency adjustable witricity system to power medical sensors and implantable devices. New witricity resonators are designed for both energy transmission and reception. A prototype platform is described, including an RF power source, two resonators with new structures, and inductively coupled input and output...
Recently, a highly efficient method to transmit power wirelessly using mid-range resonant coupling was reported. Based on this method, we present a multilayer thin film design of power transfer cells for medical applications. Consisting of a tape coil in the exterior layer and strips in the interior layer separated by an insulation layer, these cells have an equivalent structure of multiple inductors...
The transcutaneous energy transmission system (TETS) uses a contactless transformer to power an implanted artificial heart. This system does not require penetrating wires through the skin, preventing patients from infection-associated complications. We investigate the structures of TETS computationally and analyze the effects of core shapes on coupling characteristics. A coil design with a high coupling...
Witricity, a highly efficient wireless power transfer method using mid-range resonant coupling, was reported in recent literature. Based on this method, we present a wireless power transfer scheme using thin film resonant cells for medical applications. The thin film cells, consisting of a tape coil in the exterior layer and conductive strips in the interior layer separated by an insulation layer,...
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