This work investigates the feasibility of having a
mattress based wireless power transfer system with transfer
efficiency such that the received power could potentially be
enough to fully power up wearable systems intended to
provide some level of continuous physiological monitoring;
hence eliminating the need for users to ever have to recharge
the systems. The novel architecture proposed in this work, to
optimise power transfer efficiency against angular misalignment
typical of non-static use is based on a non-coupling coil
structure combined with a magnetic beamforming scheme.
The coil system also incorporates a non-coupling relay array
to overcome the significant loss in power transfer efficiency
associated to increasing distances between transmitters and
receivers. The system is proven to be able to deliver around
11.8mW of power in the worst-case scenario, with a receiver
25cm above the transmitters, whilst meeting the safety
requirements associated to electromagnetic exposure to the
human body.