Low noise amplifier with actively terminated input
US6008696A · kind A · utility
5Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Apr 21, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/372
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An impedance matching circuit includes a differential amplifier providing a differential output signal across two output terminals. The differential amplifier receives the input signal whose input impedance is to be matched at one of the differential input terminals. The other one of the differential amplifier's input terminals is coupled to ground by a resistor. In one embodiment, feedback signal paths from the output terminals are provided by feedback resistors. In another embodiment, feedback signal paths from the output terminals are currents related by the ratio of the resistance of the resistor to the input impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.