Digitally controlled analog RF filtering in subsampling communication receiver architecture
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United States of America Patent
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Jul 18, 2006
Grant Date -
Mar 13, 2003
app pub date -
Mar 15, 2002
filing date -
Mar 16, 2001
priority date (Note) -
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Abstract
A first periodic voltage waveform (20) is downconverted into a second periodic voltage waveform (35, 36). A plurality of temporally distinct samples (SA1, SA2, . . . ) respectively indicative of areas under corresponding half-cycles of the first voltage waveform are obtained. The samples are combined to produce the second voltage waveform, and are also manipulated to implement a filtering operation such that the second voltage waveform represents a downconverted, filtered version of the first voltage waveform.
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