I am trying out an H-Bridge inverter using GaN FETs at 140 kHz. The schematic is as follows. (In the experimental prototype, I used TI's LMG5200 and the load is connected via a full-bridge rectifier.
But when I load the inverter with the resonance LC circuit and the receiver, the output waveform becomes like this. The output voltage is not stable.
What am I missing here?