Patent ID: 8364099
Filing Date: 2013-01-29
Classification: H03F,H04B

Abstract:
1. An RF power amplifier apparatus, comprising: an RF PA having an active device with an RF input configured to be driven by an RF drive signal, an RF output, and a parasitic capacitance formed between the RF input and RF output; and a waveform converter configured to receive a sinusoidal RF signal and generate a nonsinusoidal RF drive signal therefrom for outputting to the active device, said nonsinusoidal RF drive signal used to drive said active device, and having signal characteristics that result in less leakage of the drive signal from the RF input to the RF output via the parasitic capacitance, compared to an amount of leakage that would result if the sinusoidal RF signal was used to drive the active device, wherein the nonsinusoidal RF drive signal generated by the waveform converter has a lower peak amplitude than a peak amplitude of the sinusoidal RF signal.