Wireless transceiver components with improved IQ matching

Details Wireless transceiver components with improved IQ matching Wireless transceiver components with improved IQ matching

2008-06-02

2010-10-26

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Combining of plural signals

C377S047000, C377S048000

Reexamination Certificate

active

07821318

ABSTRACT:
A mixer includes first and second differential input pairs that include first and second transistors. First and second bias transistors receive a first signal of a differential input signal that is the one of a first phase and a second phase, and that respectively communicate with first terminals of the first and second transistors of the first differential input pair. Third and fourth bias transistors receive a second signal of the differential input signal, and that respectively communicate with first terminals of the first and second transistors of the second differential input pair. First and second capacitive elements have first and second ends that respectively communicate with the first terminals of the first and second transistors of the first and second differential input pairs. Four current sourcing elements respectively communicate with first terminals of the first, second, third, and fourth bias transistors.

REFERENCES:
patent: 7289783 (2007-10-01), Rostami et al.
patent: 7403048 (2008-07-01), Heidari et al.
patent: 7518417 (2009-04-01), Tan et al.

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