Three stage algorithm for automatic gain control in a receiver system
US7778617B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2007 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Feb 9, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G1/0088
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In an embodiment, a receiver for processing a RF input signal having a variable signal strength includes an RF amplifier, an IF amplifier, and a controller. The RF amplifier is configured to receive and amplify the RF input signal. The IF amplifier is coupled to an output of the RF amplifier. The controller controls gains of the RF amplifier and the IF amplifier during times of falling signal strength. A gain of the IF amplifier is increased as the signal strength falls until a first amplitude threshold is reached for the falling signal strength. If the signal strength falls beyond the first threshold, a gain of the RF amplifier is increased until a second amplitude threshold is reached. The second amplitude threshold is lower than the first amplitude threshold. If the signal strength falls below the second amplitude threshold, the gain of the IF amplifier is further increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.