Efficient CMOS amplifier with increased transconductance

Details Efficient CMOS amplifier with increased transconductance Efficient CMOS amplifier with increased transconductance

1996-02-07

1998-02-24

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Frequency or repetition rate conversion or control

327105, 327356, 327562, H03F 326, H04B 126

Patent

active

057215006

ABSTRACT:
An RF IC having an improved transconductance comprises a first active device of a first conductance type having a gate, a drain and a source and a second active device of a second conductance type having a gate, a drain and a source. The second active device is coupled in series with the first active device. The gate of the first active device is coupled to the gate of the second active device. A current reuse circuit is coupled to the first active device and the second active device wherein a current flowing from the drain of the first active device is reused in the second active device. Whereby transconductance is increased without an increased current utilization and without an increase in noise.

REFERENCES:
patent: 4335360 (1982-06-01), Hoover
patent: 4384261 (1983-05-01), Yokoyama
patent: 4433303 (1984-02-01), Sasaki
patent: 5221910 (1993-06-01), Tournier
patent: 5351012 (1994-09-01), Toumazou
patent: 5568093 (1996-10-01), Holzer

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