Bias circuit with mode control and compensation for voltage...

Details Bias circuit with mode control and compensation for voltage... Bias circuit with mode control and compensation for voltage...

2007-05-29

2007-05-29

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including temperature compensation means

C330S285000, C330S296000, C330S290000

Reexamination Certificate

active

11065208

ABSTRACT:
An amplifier bias system. The amplifier bias system includes a battery voltage supply coupled with an amplifier transistor to be biased; an output node coupled with a gate of the amplifier transistor; and a current source coupled with the battery voltage supply, wherein the current source provides a current to a node in response to the battery voltage supply. The amplifier bias system further includes a first transistor coupled between the battery voltage supply and the output node, the first transistor having a gate coupled with the first node; a second transistor coupled with the first node, the second transistor having a gate coupled with the output node; and a current load coupled with the output node.

REFERENCES:
patent: 5532648 (1996-07-01), Culling
patent: 5548248 (1996-08-01), Wang
patent: 5986509 (1999-11-01), Lohninger
patent: 6255897 (2001-07-01), Klemmer
patent: 6300837 (2001-10-01), Sowlati et al.
patent: 6369656 (2002-04-01), Dening et al.

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