LNA control-circuit for receive closed loop automatic gain control
US6324387A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1998 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Dec 29, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3052
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A controlled receive device is disclosed having an amplifier circuit, which receives an input signal, and a control circuit which receives the input signal and outputs a controlled signal to a receiver. The receiver outputs an output signal. A controller varies the gain of the amplifier circuit in response to levels of the controlled signal and the output signal. The control circuit outputs a controlled indicator signal indicative of a level of the controlled signal and the receiver outputs an output indicator signal indicative of the output signal level. The controlled indicator signal and the output indicator signal are compared using comparators, to respective reference or threshold levels for producing control signals used by the controller for varying the amplifier gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.