Bias circuit

Details Bias circuit Bias circuit

2006-08-08

2006-08-08

Mottola, Steven J. (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

Reexamination Certificate

active

07088183

ABSTRACT:
A bias circuit supplying a bias current to a first transistor includes a second transistor having a collector connected to a first power supply and having an emitter connected to a base of the first transistor, a third transistor having a collector connected to the emitter of the second transistor and having an emitter connected to a second power supply, a voltage supply circuit supplying a base voltage to a base of the second transistor, a first resistor connecting the collector of the third transistor and a base thereof, and a capacitor connected between the base of the second transistor and the second power supply.

REFERENCES:
patent: 5629648 (1997-05-01), Pratt
patent: 6300837 (2001-10-01), Sowlati et al.
patent: 6333677 (2001-12-01), Dening
patent: 6492769 (2002-12-01), Oda et al.
patent: 6549076 (2003-04-01), Kuriyama
patent: 6566954 (2003-05-01), Miyazawa
patent: 6624700 (2003-09-01), Luo et al.
patent: 2003-58262 (2003-02-01), None

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