Output circuit of radio-frequency transmitter

Details Output circuit of radio-frequency transmitter Output circuit of radio-frequency transmitter

2010-02-05

2011-11-22

Nguyen, Hieu (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including gain control means

C330S129000

Reexamination Certificate

active

08063703

ABSTRACT:
An output circuit including a fine-adjustment VGA and a rough-adjustment VGA, where the maximum gain of the fine-adjustment VGA, as attained when the minimum gain of the rough-adjustment VGA is attained, is lower than the maximum gain of the fine-adjustment VGA as attained when the maximum gain of the rough-adjustment VGA is attained, so that the power consumption of the rough-adjustment VGA is reduced.

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patent: 5909643 (1999-06-01), Aihara
patent: 7567129 (2009-07-01), Rohani et al.
patent: 7675360 (2010-03-01), Arai et al.
patent: 9-148852 (1997-06-01), None
patent: 10-107654 (1998-04-01), None
patent: 11-205165 (1999-07-01), None
patent: 2000-261332 (2000-09-01), None

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