Pulse or digital communications – Receivers – Automatic baseline or threshold adjustment
Reexamination Certificate
2006-12-29
2009-12-15
Luu, An T (Department: 2816)
Pulse or digital communications
Receivers
Automatic baseline or threshold adjustment
C375S298000, C375S320000
Reexamination Certificate
active
07634027
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
Behzad Arya
Li Qiang
Roufoogaran Razieh
Broadcom Corporation
Luu An T
McAndrews Held & Malloy Ltd.
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