Patent ID: 7355474

Claim:
A method for reducing switching interference in a switching amplifier, the switching amplifier having a first modulator and a second modulator, the switching amplifier suitable for generating a differential output signal, the method comprising: inputting a first reference wave and a first input signal to the first modulator; inputting a second reference wave and a second input signal to the second modulator, a waveform of the first reference wave being geometrically different than the waveform of said second reference wave, said first reference wave having an amplitude and a frequency that is identical to an amplitude and a frequency of said second reference wave; generating a first modulated signal from an output of said first modulator by modulating the first input signal with said first reference wave; and generating a second modulated signal from an output of said second modulator by modulating said second input signal with said second reference wave, a transition of said first modulated signal having a time delay from a transition of said second modulated signal.