Direct conversion radio receiving system using digital signal processing for channel filtering and down conversion to base band
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United States of America Patent
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Jul 26, 2005
Grant Date -
Mar 27, 2003
app pub date -
Oct 23, 2002
filing date -
May 13, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A radio receiving system, which receives an input signal in a direct conversion receiving mode through the use of a plurality of cascaded channel filters, each including a complex coefficient filter, to obtain a desired waveform, wherein a center frequency of a preliminary channel filter corresponds more closely with the frequency of the desired waveform than a center frequency of a subsequent channel filter.
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