Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reexamination Certificate
2006-05-02
2006-05-02
Tsang, Fan (Department: 2645)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C455S127200, C455S239100, C375S345000, C330S278000
Reexamination Certificate
active
07039376
ABSTRACT:
An AGC amplifier circuit has a fixed-gain amplifier, of which the gain is not controlled by an AGC voltage, and a variable-gain amplifier, of which the gain is controlled by the AGC voltage, that are connected in parallel. When the AGC voltage is within a predetermined voltage range, the overall gain of the AGC amplifier circuit is varied by the variable-gain amplifier; however, when the AGC voltage is outside the predetermined voltage range, the overall gain is kept constant by the fixed-gain amplifier. The minimum gain of the AGC amplifier circuit is set to be equal to the gain of the fixed-gain amplifier.
REFERENCES:
patent: 4996501 (1991-02-01), Sano et al.
patent: 5020146 (1991-05-01), Pugel
patent: 6044253 (2000-03-01), Tsumura
patent: 6128479 (2000-10-01), Fitzpatrick et al.
patent: 6232839 (2001-05-01), Honda
patent: 6647072 (2003-11-01), Shibamura
patent: 6788744 (2004-09-01), Hirama
patent: A5206766 (1993-08-01), None
Elahee Md S.
Sharp Kabushiki Kaisha
Tsang Fan
LandOfFree
AGC amplifier circuit for use in a digital satellite... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with AGC amplifier circuit for use in a digital satellite..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and AGC amplifier circuit for use in a digital satellite... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3625442