Variable gain low noise amplifier
US6933779B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2003 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Aug 26, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/7236
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention is related to a variable gain low noise amplifier that optimizes input matching, gain and noise characteristics, and linearity. The variable gain low noise amplifier according to an embodiment of the present invention includes a first amplifying cell that operates in a high gain mode, a second amplifying cell that operates in a low gain mode, a selectively matching circuit, and a first short-circuit means. The variable gain low noise amplifier according to the present invention selects the best operation in each gain mode so that the circuit operated in high and low gain modes does not affect a load of another circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.