Patent ID: 8717096
Filing Date: 2014-05-06
Classification: H03F

Abstract:
1. A switching amplifier system, comprising: a noise shaper, receiving a first signal, performing a noise shaping process to process the first signal according to a feedback signal to generate a second signal sliced into a plurality of frames; a corrector, adding a plurality of correction pulses respectively to the frames of the second signal to obtain a third signal in such a way that the correction pulse added to the second signal in a target frame selected from the frames has a polarity inverse to that of an original waveform of the second signal in the target frame; a pulse width logic, converting the third signal from a pulse code modulation (PCM) format to a pulse width modulation (PWM) signal; and a PWM-to-PCM converter, converting the PWM signal to a fourth signal with the PCM format, and sending the fourth signal back to the noise shaper as the feedback signal.