I have been able to calculate and fix components for the transmitter circuit of wireless power transmission system but I am still having some challenges. They are:

1. How can I calculate theoretically the gain of the mosfets?
2. How can I calculate the voltage induced at the receiver circuit?
3. How can I calculate the values of the components I can use to rectify the received voltage? I am working with 14MHz frequency.

Note: I tried to use the formular, coupling coefficient (K)* magnetic field (B) to calculate the induced voltage but I got a rediculously little number. So, I really need answers to help me move forward. I would also appreciate a better circuit diagram that can transfer up to 24 volts.