BROADBAND RECEPTION SYSTEM
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United States of America Patent
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N/A
Issued Date -
Oct 9, 2008
app pub date -
Apr 7, 2008
filing date -
Apr 5, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A reception system is proposed which is intended for receiving radio broadcasting in the AM and FM bands having an antenna coupled to an analog part on the input side, for receiving a complete reception band. The system also has a frequency selection module and a digital part that is set up to output a demodulated audio signal. The selection module comprises, as seen in the signal flow, of a filter, an attenuation element that can be regulated, a fixed amplifier, and a further filter. The output side band of the analog part provides a band limited and level-regulated signal that is sampled in an analog to digital converter at a frequency f.sub.s so that sub-sampling is employed for direct digitalization of the FM band. Sub-sampling is used in relationship to a useful band, wherein this useful band lies completely in the second Nyquist zone. Thus, in this case, f.sub.s>f.sub.max and f.sub.s/2
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