[SOLVED] wireless power transfer simulation

[the8thhabit]

Hello, I'm simulating a wireless power transfer system and I have a question.

The simulation results are different when the rectifier receives power from the TX as shown in the first figure below and when the RX consisting of the rectifier is converted to an equivalent resistor as shown in the second figure. (Tx is consist of Class-D PA)

I use the equation of Rrect = RL * {8/(π^2)}

The waveform I want is simulated as shown in the first figure with RL, and its result is below.
I would like to know why the same waveform does not appear when I convert it to an equivalent resistor.

All the setup situations are the same, I just changed the rectifier to an equivalent resistor.

I would appreciate your help.

 

[D.A.(Tony)Stewart]

Why would you expect a rectifier to behave like a resistor? BTW your schemas are unreadable.

 

[FvM]

What is Vx1 and Vx2, it can't be found in schematics? Due to different scaling and missing x-axis annotation, it's even unclear if waveforms have same pulse period.

Generally, "equivalent resistor", if calculated correctly, is a fundamental wave parameter and a simple first order estimation. It hardly involves same waveforms. Effects like diode forward voltage and diode capacitance are ignored.