Stacked modulator and automatic gain control amplifier

Details Stacked modulator and automatic gain control amplifier Stacked modulator and automatic gain control amplifier

2006-03-21

2006-03-21

Smith, Creighton (Department: 2645)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C455S333000

Reexamination Certificate

active

07015755

ABSTRACT:
A circuit arrangement that stacks a modulator and automatic gain control (AGC) amplifier so as to re-use the modulator output current to drive the AGC amplifier, thereby saving power consumption and avoiding an unnecessary signal transformation between the two stages. A balanced circuit topology is used. The modulation signal can be selected over a wide range (100 MHz to 5.4 GHz) and the circuit arrangement is therefore particularly suitable for wireless applications (e.g. GSM-EDGE) and for integrated circuit fabrication.

REFERENCES:
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patent: 6140849 (2000-10-01), Trask
patent: 6212369 (2001-04-01), Avasarala
patent: 6316996 (2001-11-01), Puotiniemi
patent: 6370372 (2002-04-01), Molnar et al.
patent: 6553213 (2003-04-01), Kikuchi
patent: 6563375 (2003-05-01), Khosrowbeygi et al.
patent: 6768391 (2004-07-01), Dent et al.
patent: 2003/0045248 (2003-03-01), Chominski
patent: 2003/0045258 (2003-03-01), Gonya, Sr.
patent: 2000091849 (2000-03-01), None

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