Patent ID: 7489206
Filing Date: 2009-02-10
Classification: H03H

Abstract:
1. A high-frequency power device comprising: an oscillator, adapted to output an oscillation signal and vary an oscillation frequency of the oscillation signal in accordance with an instruction; a high-frequency power supplier, adapted to amplify the oscillation signal to supply high-frequency power to a load capable of discharging; a reflection coefficient calculator, adapted to calculate an absolute value of a reflection coefficient based on information of high-frequency oriented from the high-frequency power supplier toward a side of the load and high-frequency oriented from the side toward the high-frequency power supplier and output the calculated absolute value to a frequency controller; a discharge signal output unit, adapted to output a discharge signal to the frequency controller to change the oscillation frequency before and after the load discharges; and the frequency controller, adapted to give the instruction to the oscillator based on the absolute value and the discharge signal, wherein the frequency controller: