Automatically adjusting low noise amplifier
US7081791B2 · kind B2 · utility
2Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2004 |
| Grant date | Jul 25, 2006 |
| Priority date | — |
| Expiry date | May 14, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G2201/307
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A low noise amplifier circuit (10) includes an attenuator (12) for receiving a calibration signal and generating an attenuated calibration signal. A low noise amplifier (14) amplifies the attenuated calibration signal in calibration mode or amplifies a functional signal in functional mode. In calibration mode, a envelope detector/comparator (16) compares the calibration signal with the output of the low noise amplifier and generates a compensation signal indicating a deviation between the two signals. The gain of the low noise amplifier is adjusted responsive to the compensation signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.