Patent ID: 7548741
Filing Date: 2009-06-16
Classification: H03H,H05H

Abstract:
1. A power generation system comprising: a RF power generator, the RF power generator providing a RF output power; a matching network communicating with the RF power generator and receiving the RF output power, the matching network communicating with a load and having a variable impedance; a phase-magnitude detector module receiving at least one signal that varies in accordance with the RF output power, the phase-magnitude detector including a dual logarithmic amplifier phase-magnitude detector, the dual logarithmic amplifier phase-magnitude detector receiving a current signal that varies in accordance with a current of the RF output power and a voltage signal that varies in accordance with a voltage of the RF output power, the dual logarithmic amplifier phase-magnitude detector generating a phase signal that varies in accordance with the phase between the voltage signal and the current signal and a magnitude signal that varies in accordance with the magnitude between the voltage and current signals; and a controller for receiving the phase and magnitude signal and communicating at least one control signal to the matching network to vary the impedance.