Method and apparatus for high efficiency power amplification
US6486733B2 · kind B2 · utility
21Cited by
8References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2000 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Dec 27, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/0244
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for efficient power amplification of a wideband signal with a correspondingly wide modulation bandwidth includes splitting means (110), class-G amplifier/modulator (120), and power amplifier (130). Three-level class-G amplifier/modulator (200, FIG. 2) comprises operational amplifier circuits (215, 225), three-state selection circuit (209), switch driver circuit (219), drive signal routing circuit (216), power stage circuit (217), and filter network (218). Multiple power stages are multiplexed based on the amplitude of the envelope signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.