Patent ID: 7046088
Filing Date: 2006-05-16
Classification: H03F

Abstract:
1. A power amplifier for generating a sinusoidal high-frequency signal to be supplied to a load, the power amplifier comprising: a current source adapted to supply a constant electrical current during a portion of a period of a fundamental wave; a first driver circuit that generates a first current wave, the circuit comprising: a second driver circuit for generating a second current wave, the circuit comprising: a filter network comprising an oscillating circuit comprising a capacitor connected in parallel with the load and a first inductor connected in series with the first internal resistance and a second inductor in series with the second internal resistance, wherein the oscillating circuit is tuned to the fundamental frequency of the fundamental wave and wherein the oscillating circuit is adapted to perform a resistance transformation from the first and second internal resistances of the driver circuits to the load; and at least one resistor arranged between the first driver circuit and the second driver circuit, wherein a resistance of the resistor is selected to cause a phase correction between the first current wave and the second current wave.