Amplitude based coarse automatic gain control circuit
US6081565A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1998 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | Feb 5, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/3809
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A digital automatic gain control circuit for a receiver includes an averaging block and an adjustment block. The averaging block receives a length of a digital sample stream that represents an incoming analog signal and produces an absolute average signal. The adjustment block receives the absolute average signal and a reference signal and outputs an adjustment signal for controlling gain. The adjustment signal is based on a difference between the absolute average signal and the reference signal. In an alternative embodiment, a method of controlling gain according to the invention includes the steps of calculating an absolute average of an incoming signal, and comparing the absolute average to a reference to produce an adjustment signal based on a difference between the absolute average and the reference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.