Highly linear transconductor with passive feedback

Details Highly linear transconductor with passive feedback Highly linear transconductor with passive feedback

1998-10-30

2000-08-15

Pascal, Robert

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330149, H03F 345

Patent

active

061042420

ABSTRACT:
A high linearity transconductance stage is arranged with a loss cancellation method to remove the nonlinearity of a typical transconductance circuit. The loss cancellation method uses a series of transistors and resistors to supply a controlled feedback current to cancel the result of the change (.DELTA.) in voltage across the input of the transistor used to provide the transconductance for the transconductance stage of a circuit, such as an amplifier, a mixer or other active circuit.

REFERENCES:
patent: 4498054 (1985-02-01), Fukuda et al.
patent: 5148119 (1992-09-01), Wright et al.
patent: 5602509 (1997-02-01), Kimura
patent: 5621356 (1997-04-01), Philippe
patent: 5742248 (1998-04-01), Vorenkamp et al.
patent: 5872483 (1999-02-01), Kimura
patent: 5963975 (1999-10-01), Boyle et al.

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