The current work presents a structure that can be used in magnetically coupled bi-directional data transfer structures. It allows for high-speed data transfer with high decoupling between both data channels and thus provides a highly reliable data link. The principal used to achieve the decoupling is the cancellation of magnetic fields generated by one part of the structure in the other part and vice versa. Three dimensional field simulations and measurements at a prototype were conducted.

In this paper, wireless power and data transmission through coupled magnetic resonators is investigated. Measurements on a simple prototype lead to a simplified schematic model. Based on this, the transfer channel's behaviour is modeled for arbitrary channel states (e.g. transfer distances) and can be fitted into a mathematical model. This is finally used to show that shifting the resonant frequencies of the individual resonators is a good means to ensure stabele data and energy transmission.