Amplifier with multiple inputs
US6798294B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2002 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | Sep 13, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/372
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A low noise amplifier (500) is provided for amplifying signals in a frequency band. The low noise amplifier (500) comprises several amplifying elements (505, 506) that share a load impedance (503) and a degeneration impedance (504). One of the amplifying elements (505, 506) is activated at a time that the rest are deactivated. The activation and deactivation is done by feeding a bias to a bias port (501, 507) or grounding the same, respectively. A signal to be amplified is fed to the corresponding input (511, 512) depending on which of the amplifying elements (505, 506) is activated. An amplified signal is obtained at an output (513).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.