Variable gain mixer

Details Variable gain mixer Variable gain mixer

2006-06-30

2010-06-29

Nguyen, Hai L (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Combining of plural signals

C327S356000

Reexamination Certificate

active

07746151

ABSTRACT:
The mixer includes mixers constructed with variable gain amplifiers having two transistor pairs Qp+/Qp− and Qn+/Qn− to have a predetermined gain by using LO+ and LO− signals; and LO bias circuits connected to have bias voltages different from each other with respect to the LO+ and LO− signals of the mixers and share an input signal.

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patent: 6342804 (2002-01-01), Havens et al.
patent: 6404263 (2002-06-01), Wang
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patent: 6812771 (2004-11-01), Behel et al.
patent: 6931083 (2005-08-01), Linder et al.
patent: 7521997 (2009-04-01), Beck et al.
patent: 1999-024433 (1999-04-01), None
patent: 2002-0026354 (2002-04-01), None
Abdellatif Bellaouar et al., “A Highly-Integrated SiGe BiCMOS WCDMA Transmitter IC”, International Solid-State Circuits and Systems, 2002.
International Search Report for PCT/KR2006/002555 mailed Oct. 30, 2006.
Written Opinion for PCT/KR2006/002555 mailed Oct. 30, 2006.

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