Amplifiers – With semiconductor amplifying device – Including particular biasing arrangement
Reexamination Certificate
2009-06-29
2010-12-21
Nguyen, Khanh V (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including particular biasing arrangement
C330S289000
Reexamination Certificate
active
07855603
ABSTRACT:
A Darlington pair amplifier includes a temperature compensation device. In one case, the device is a resistor connected in series between: (a) an intermediate node of two bias resistors for the Darlington pair, and (b) the control terminal of the Darlington pair. In another case, the device is a second, smaller, Darlington pair connected in series with the two bias resistors for the first Darlington pair. In still another case, the device is a combination of: (1) a resistor connected in series between: (a) an intermediate node of the two bias resistors for the Darlington pair, and (b) the control terminal of the Darlington pair; and (2) a second, smaller, Darlington pair connected in series with the two bias resistors for the first Darlington pair.
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patent: 6611172 (2003-08-01), Kobayashi et al.
patent: 6972630 (2005-12-01), Kobayashi
patent: 7142058 (2006-11-01), Bokatius
patent: 101119100 (2008-02-01), None
patent: 2000/124745 (2000-04-01), None
Gengler, Jeff, “General Purpose Amplifier Biasing”, Freescale Semiconductor, AN3100, Rev. 2, Jul. 2008, pp. 1-4.
Avago Technologies Wireless IP (Singapore) Pte. Ltd.
Nguyen Khanh V
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