Pulse or digital communications – Systems using alternating or pulsating current – Angle modulation
Reexamination Certificate
2007-02-28
2010-11-02
Fan, Chieh M (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Angle modulation
C375S135000, C375S376000, C375S320000, C330S149000, C332S159000
Reexamination Certificate
active
07826550
ABSTRACT:
Aspects of a method and system for a high-precision frequency generator using a direct digital frequency synthesizer for transmitters and receivers may include generating a second signal from a first signal by frequency translating an inphase component of the first signal utilizing a high-precision oscillating signal that may be generated using at least a direct digital frequency synthesizer (DDFS) and at least a Phase-Locked Loop (PLL). A corresponding quadrature component of the first signal may be frequency translated utilizing a phase-shifted version of the high-precision oscillating signal. The inphase component of the first signal may be multiplied with the high-precision oscillating signal and the quadrature component of the first signal may be multiplied with the phase-shifted version of the high-precision oscillating signal. The second signal may be generated from the first signal by adding the frequency translated inphase component to the frequency translated quadrature component.
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Broadcom Corp.
Fan Chieh M
Garcia Santiago
McAndrews Held & Malloy Ltd.
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