Ultra low-voltage Inductive communication

Hello,

I would like to design an inductive communication module that transmits signal over a membrane several mm thick. So, it is a really close distance.

The power requirements of the transmitting scheme are it has to operate below 50mV. I am tempted to just hook up a coil there, and turn it on and off with 50mV, but I am sure there are other design parameters I would have to consider.

I am wondering if there is some good resource learning about such a design scheme, so that I can implement it.

Best,