Grants and Contributions:

Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019).

Wireless power transfer systems are an emerging technology with the aim of completely eliminating cables forx000D
powering electrical devices. Wireless power systems are typically limited to short distances up to 50 cm, andx000D
applications of the technology are broad ranging from the elimination of wiring harnesses in automobile andx000D
aerospace applications to powering implanted biomedical devices. One of the main challenges in wirelessx000D
power systems is compensating for impedance changes created by spatial variation. The compensation ofx000D
spatial impedance change is essential to obtain efficient and robust power transfer.x000D
In this research project, wireless links with class E inverters and class E synchronous rectifiers will bex000D
investigated. Designs for three different frequency bands (13.56 MHz, 27.12 MHz and 40.68 MHz) will bex000D
implemented. A comparison of the power transfer over a capacitively coupled wireless link will be evaluatedx000D
for a range of spatial variation from 10 to 40 cm. Conclusions will be made regarding the robustness of thex000D
class E circuit topology when subjected to spatial impedance changes as well as the impact of link frequency onx000D
spatial impedance sensitivity.