Pulse-width modulator methods and apparatus
US7760041B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 2008 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Aug 7, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K7/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Otherwise conventional pulse-width modulators (PWMs) generate signals that can be converted into other forms by reshapers, and thereby overcome many of the problems of conventional PWMs in applications that demand high performance, such as switched-mode amplifiers and radio-frequency transmitters in modern communication systems. With a suitable reshaper, a conventional PWM differential signal can be converted into a signal more typical of linear amplification with nonlinear components (LINC) and still retain low-frequency information, such as the information needed for linearization of a switched-mode amplifier. Apparatus and methods of transforming signals are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.