Method and system for amplifying a signal

Details Method and system for amplifying a signal Method and system for amplifying a signal

2007-10-23

2007-10-23

Nguyen, Khanh Van (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including plural stages cascaded

C330S289000, C330S285000, C330S296000

Reexamination Certificate

active

11031185

ABSTRACT:
According to one embodiment of the invention, an amplifier includes a gate bias circuit operable to generate a gate bias voltage and a common gate amplifier that includes a transistor having a gate biased by an output of the gate bias circuit and also having a source connected to an inductor for providing a path to ground for direct current flowing through the transistor. According to another embodiment of the invention, a method for amplifying a signal by an amplifier includes generating a gate bias voltage indicative of a difference between a reference voltage and an output voltage of the amplifier, biasing the gate of the common-gate amplifier with the gate bias voltage, and blocking, by a passive device, alternating current signals from flowing from the source of the transistor to ground.

REFERENCES:
patent: 6122532 (2000-09-01), Taylor
patent: 6133793 (2000-10-01), Lau et al.
patent: 6754478 (2004-06-01), Lee et al.
patent: 6850120 (2005-02-01), Heima et al.

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