wireless power transfer by pcb coil

Dear All,

I want to model and simulate a wireless power transfer module. Its application is in microchip implant.

The model has two 3D microstrip(PCB with substrate) coil. One for transmitter and the other is for receiver. My model has two physics:

1) Magnetic and electric Fields

2) Electrical Circuit

Electrical circuit supplies Sin power to transmitter in 4MHz frequency. The receiver coil is connected to a resistor load. I use terminal in magnetic and electric field to connect the 3D model to circuit.

I want to study electrical field (E) and magnetic field (H) in 3D model. Also, I want to study how much power transfer and how much is the efficiency.

I use frequency domain study and stationary or Time Dependent study, but in frequency domain I got error in convergence and in time dependent the circuit can’t stimulate the 3D model.

How can I solve this problem?

Is there any idea to get my goal results?

I attach this model in this share link you can download it here:
www.4shared.com/file/BHB8du0n/power.html

So Thanks.

Mina