I'm trying to design and simulate the Q-modulation technique for a body implant. The technique involves two loops: one outside the body, with resonating LC tank producing a big voltage. Another loop is inside the body and has coupled links.
I need to switch load in the second loop to improve my efficiency. I used an ideal switch at first. It works fine after I replace the switch with a mosfet. However, in OFF phase of Mosfet, body diode will turn on, and the negative current will flow through mosfet. This is bad for efficiency and power consumption,