Implementation of simultaneous energy and data transfer in a contactless connector

This paper presents a contactless near field energy and data transfer system, which uses one common pair of coils for both transmission purposes. Though a contactless connector for harsh environments proves an exemplary application, the concept can be adapted to several other applications. The challenge is to transmit the data simultaneously to a large energy signal. The system concept, simulation, as well as measurement results of a hardware demonstrator will be presented in this paper. It will be shown that a robust data transmission system can be realized featuring superior SNR and nearly noise free operation even with a simultaneous energy transfer of several kilowatts.