US Patent 7400191 Switching power amplifier

The present invention discloses a switching amplifier, comprising a modulator for converting a main input signal to a high frequency modulated switching signal and for providing voltage amplification of the main input signal. The present invention further includes a power output stage coupled with an output of the modulator for receiving the voltage amplified main input signal and for providing a current amplification of the main input signal for providing a main output signal for deriving a load. Further included is a feedback module for correction of the main output signal in relation to the main input signal.