Circuit for automatic gain control with constant response time
US4334185A · kind A · utility
19Cited by
16References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1980 |
| Grant date | Jun 8, 1982 |
| Priority date | — |
| Expiry date | Dec 18, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3052
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for automatic gain control of a feedback system in a time that is essentially constant regardless of the signal level includes a device for producing a signal that is representative of the output of the circuit. The signal is compared with a fixed reference to determine an error signal. The error signal is multiplied by its own time integral to obtain a control signal for a weighter that is cascaded with an amplifier to provide a controlled forward path. By this means, gain of the controlled forward path is controlled within a time that is substantially independent of signal strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.