Apparatus, methods and articles of manufacture for signal propagation using unwrapped phase
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United States of America Patent
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Apr 8, 2008
Grant Date -
Jun 9, 2005
app pub date -
Dec 9, 2003
filing date -
Dec 9, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a system for processing an electromagnetic input signal in which processing circuitry may be used to produce a bounded phase signal, such as by calculating an n-bit 2's compliment number in the range of [-1, 1] from phase sample information for an input wave; and producing an unwrapped phase difference signal from the bound phase signal, such as by taking a 2's compliment subtraction using another wrapped phase signal from previous phase sample information. A corrected phase signal may also be used by taking a 2's complement addition using the bounded phase signal, wherein the unwrapped phase difference signal is produced using the corrected phase signal.
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