Method and system for multiple tuner application using a low...

Details Method and system for multiple tuner application using a low... Method and system for multiple tuner application using a low...

2002-08-08

2009-08-25

Nguyen, Simon D (Department: 2618)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C455S191100, C455S253200, C455S325000, C455S340000

Reexamination Certificate

active

07579912

ABSTRACT:
An active splitter circuit arrangement includes a first amplification module having a number of first input ports and first output ports. The first amplification module is configured to provide first stage amplification to a received input signal and produce from the amplified input signal a number of output signals, each substantially matching the input signal. Also included is a first gain control device having a number of gain input ports respectively coupled to the first output ports and a gain output port coupled to at least one of the first input ports. The first gain control device is configured to control a gain of the first amplification module. Next, a number of second amplification modules corresponding to the number of output signals has a number of second input ports respectively coupled to the first output ports. Each second amplification module is configured to receive a control signal from the second gain control device, provide second stage amplification to a corresponding one of the number of output signals based upon the control signal and produce an amplified output signal.

REFERENCES:
patent: 5179730 (1993-01-01), Loper
patent: 5745846 (1998-04-01), Myer et al.
patent: 6091441 (2000-07-01), Al-Araji et al.
patent: 6188284 (2001-02-01), Shulman
patent: 6397051 (2002-05-01), Abbasi et al.
patent: 6694129 (2004-02-01), Peterzell et al.
International Search Report issued Oct. 3, 2002 for Appln. No. PCT/US02/25804, 4 pages.

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