%0 Journal Article
%@ 2088-8694
%A Vu, Tuan Anh
%A Pham, Van Chi
%A Pham, Anh Vu
%A Gardner, Christopher
%D 2019
%F SisLab:3464
%I Institute of Advanced Engineering and Science
%J International Journal of Power Electronics and Drive Systems (IJPEDS)
%N 4
%T Wireless Power Transfer Through Metal Using Inductive Link
%U https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3464/
%V 10
%X This paper presents a highly efficient power transfer system based on a co-design of a class-E power amplifier (PA) and a pair of inductively coupled Helical coils for through-metal-wall power transfer. Power is transferred wirelessly through a 3.1-mm thick aluminum barrier without any physical penetration and contact. Measurement results show that the class-E  PA achieves a peak power gain of 25.2 dB and a maximum collector efficiency of 57.3%, all at 200 Hz. The proposed system obtains a maximum power transfer efficiency of 9% and it can deliver 5 W power to the receiver side through the aluminum barrier.