Low distortion switching amplifier circuits and methods
US8111846B2 · kind B2 · utility
0Cited by
18References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2007 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | May 12, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/351
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention include switching amplifier circuits and methods. In one embodiment, the present invention includes a low distortion method of driving a switching amplifier comprising modulating an audio input signal to produce a half-wave rectified pulse-width modulated signal and a complementary half-wave rectified pulse-width modulated signal. These signals may be amplified in a power amplifier and combined in a feedback circuit to generate a first feedback signal and a second feedback signal, which may be coupled the inputs of a modulator for controlling the output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.