Low-noise amplifier device having negative feedback via a...

Details Low-noise amplifier device having negative feedback via a... Low-noise amplifier device having negative feedback via a...

2005-01-04

2005-01-04

Choe, Henry (Department: 2817)

Amplifiers

Signal feedback

Nonlinear impedance element in loop path

C330S069000

Reexamination Certificate

active

06838936

ABSTRACT:
The amplifier device contains a first amplifier element having a first input and a first output. The first output is fed back via a negative feedback path to the input. The negative feedback path contains a controlled current source which brings about a reduction in the noise and also a real finite input impedance.

REFERENCES:
patent: 3624536 (1971-11-01), Norton
patent: 3968431 (1976-07-01), Ekstrom
patent: 4185249 (1980-01-01), McKim et al.
patent: 4641063 (1987-02-01), Smushkovich
patent: 6172561 (2001-01-01), Schott
patent: 6323730 (2001-11-01), Hynd
patent: 6459265 (2002-10-01), Lou et al.
Tietze/Schenk: “Electronic Circuits Design and Applications”, Springer verlag, translation of 9thed. pp. 40-44 and 118-123.

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