Automatic gain control system
US4492930A · kind A · utility
7Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1981 |
| Grant date | Jan 8, 1985 |
| Priority date | — |
| Expiry date | Oct 13, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G7/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system in which automatic gain control is not applied to modify an incoming carrier signal over the first 40 dB of signal level, employs an AGC system in which a further signal is generated for further modification of the modified carrier signal to obtain the original carrier signal modified by a linear logarithmic response to the AGC signal over the entire signal range of the apparatus. In addition, automatic gain control signals derived from both an envelope AM detector and a synchronous AM detector are added together whereby a continuous AGC signal is generated regardless of the source of the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.