Switching amplifier system and method for suppressing signal distortion thereof
US8717096B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 2012 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Jul 28, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/217
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention further provides a switching amplifier system. In one embodiment, the switching amplifier system comprises a noise shaper, a corrector, and a pulse width logic. The noise shaper receives a first signal, performs 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. The corrector adds 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. The pulse width logic then converts the third signal to a pulse width modulation (PWM) signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.