Amplifier circuit and method for reducing noise therein
US6208205A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Jul 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/195
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transconductance amplifier (67) includes a multiple-stage amplifier (99) for amplifying an Intermediate Frequency (IF) signal. The transconductance amplifier includes a feedback path (103) having a resistance (105) for providing a feedback signal from an output of the multiple-stage amplifier (99) to an input of the multiple-stage amplifier (99). The resistance (105) of the feedback path (103) is selected so that an input impedance of the transconductance amplifier is equal to a source impedance at an input terminal (82) of the transconductance amplifier (67) and an output impedance of the transconductance amplifier (67) is equal to a load impedance at an output terminal (84) of the transconductance amplifier (67).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.