Noise figure and linearity improvement technique using shunt fee

Details Noise figure and linearity improvement technique using shunt fee Noise figure and linearity improvement technique using shunt fee

1998-07-30

2000-11-14

Pascal, Robert

Amplifiers

With semiconductor amplifying device

Including plural stages cascaded

330294, H03F 368

Patent

active

061475599

ABSTRACT:
A shunt-feedback technique is provided for improving noise figure and linearity of electronic circuits, such as amplifiers and mixers. An input common-emitter transconductance stage of an electronic circuit has a transistor, and a degeneration impedance provided between the emitter of the transistor and a ground terminal. A feedback capacitor is connected between the collector and the base of the transistor. A feedback resistor is coupled between the collector of the transconductance stage transistor and the emitter of a transistor in the next stage of the electronic circuit. The feedback capacitor and the feedback resistor form a shunt-feedback network.

REFERENCES:
patent: 4940949 (1990-07-01), Landi
patent: 5389891 (1995-02-01), Philippe
patent: 5530405 (1996-06-01), Rydel
"Analysis of the Transistor Cascode Configuration", J.R. James, Electronic Engineering, Jan. 1960, pp. 44-48.

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