Single coil pair transcutaneous energy and data transceiver for low power bio-implant use

A transcutaneous energy and data transceiver built from low-cost off-the-shelf components, employing a single pair of planar air-cored coils fabricated on standard PCB substrates, is presented. The transceiver powers the receiver continuously via the parallel-tuned coil pair. The latter is then able to sample audio at 8000 bytes/s and send the bitstream to a digital-to-analogue convertor in the transmitter by amplitude modulating the transmitted power carrier signal.