Method and apparatus for direct digital synthesis of signals using Taylor series expansion
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United States of America Patent
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Oct 29, 2013
Grant Date -
Sep 6, 2012
app pub date -
Oct 19, 2010
filing date -
Aug 27, 2010
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Abstract
A method and apparatus for direct digital synthesis (DDS) of signals using Taylor series expansion is provided. The DDS may include a modified phase-to-amplitude converter that includes read-only-memories (ROMs), registers and, a single adder. Values stored in the ROMs may produce one component of a sinusoid signal, and each of the ROMs may be of a different size, such as a coarse, intermediate, and fine ROM corresponding to respective higher resolution phase angles. The outputs of the ROMs when combined can form a digital output signal in the form of a Taylor series expansion of a sinusoid function.
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