Gain controllable low noise amplifier with automatic linearity enhancement and method of doing same
US6288609A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 29, 2000 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Feb 29, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3052
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A gain controllable low noise amplifier (LNA) (200) with automatic linearity enhancement utilizes an amplifier stage (203) for amplifying a radio frequency (RF) input signal and a dynamically controllable feedback loop amplifier stage (205) for providing negative feedback to the feedback amplifier. A bias controller (213) is coupled to the dynamically controllable feedback loop amplifier stage (203) for monitoring a receiver automatic gain control (AGC) system (211) and providing a dynamic bias to the feedback loop amplifier stage (205) to improve linearity to the LNA in the presence of strong on-channel and off-channel signal conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.