Method and system for independent I and Q loop amplitude...

Details Method and system for independent I and Q loop amplitude... Method and system for independent I and Q loop amplitude...

2009-12-07

2011-10-11

Luu, An (Department: 2816)

Pulse or digital communications

Receivers

Automatic baseline or threshold adjustment

C375S298000, C375S320000

Reexamination Certificate

active

08036316

ABSTRACT:
Certain aspects of a method and system for independent in-phase (I) and quadrature (Q) loop amplitude control for quadrature generators may include determining an amplitude voltage associated with an in-phase (I) component and a quadrature (Q) component of a generated signal. A DC reference voltage associated with the I component and the Q component may be determined. The determined amplitude voltage may be compared with the determined reference voltage to generate a control signal. The amplitude mismatch between the I component and the Q component may be compensated by controlling a biasing current of one or more programmable buffers associated with one or both of the I component and the Q component, based on the generated control signal.

REFERENCES:
patent: 6941118 (2005-09-01), Yamamoto
patent: 7421260 (2008-09-01), Darabi
patent: 2008/0118000 (2008-05-01), Kraut et al.

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