Detection circuits
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United States of America Patent
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Jun 18, 2002
Grant Date -
N/A
app pub date -
Aug 14, 1998
filing date -
Aug 22, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a detection circuit for ASK or OOK modulation, the received modulated signal is ac coupled to a dc restoration circuit and amplified. The dc restoration is carried out on signal peaks corresponding to 'mark' intervals of the modulated signal. Thus data may be recovered even in the presence of high levels inband continuous interfering signals.
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