Low noise amplifier with switch gain control
US7301403B2 · kind B2 · utility
1Cited by
3References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2005 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Feb 9, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45726
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
This invention presents a low noise amplifier with switching gain control, comprising an amplifier having an impedance matching circuit a switch circuit, a signal amplifying branch circuit, a switch control circuit, a signal attenuating circuit and a current bias circuit, wherein the switch circuit controls signal amplifying or attenuating based on the high or low of an input signal level. This invention provides low noise, great dynamic range, increased system integration, and low power consumption. This invention is used for integrated circuit wireless communication system and RF preamplifiers for receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.