Variable filter systems and methods for enhanced data rate communication systems
US7805115B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2004 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Apr 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45212
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A radio frequency output power control system is disclosed for use in communication systems that use a modulation scheme having a non-constant amplitude envelope. The system includes a power amplifier having a radio frequency input node for receiving a radio frequency input signal, a power control node for receiving a filtered power control signal, and an output for providing an amplified output signal. The system also includes a variable filter that receives a power control signal at a power control input and a receives a trigger signal at a trigger input, and provides a filtered power control signal to the power control node of the power amplifier responsive to the power control signal and the trigger signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.