Hello! I have this circuit: a source connected to an amplifier, which is connected to a coil. I'm trying to get 200V through the coil at 40 MHz. The problem is that the amplifier is not calibrated at that frequency and now I can only extend measurements done at lower voltages, which seems to give wrong results. I can apply maximum 1 V from the source. I was thinking about connecting a smaller coil in series with the first and to measure the voltage on the second coil on the oscilloscope. I cannot exceed 10V on the oscilloscope, so I thought about making the inductance, L2, 10 times smaller. Initially, I measured the voltage for L2 5 times smaller and the true power, P=1.115*10^-4 W. The apparent power, S=24.894 W and the power factor=P/S=4.479*10^-5, which is close to 0. I read that the power factor should be close to 1. Should I add a capacitance to get the power factor to 1? Maybe in this case I can get 200 V on the inductor 1. Do you think there's a frequency dependent quantity, like the voltage applied by the amplifier, that I haven't considered? Further, the amplifier cannot provide more than 200 W. Any ideas will be highly appreciated. Thank you.