Circuit configuration for demodulating a voltage which is ASK modulated by altering the amplitude between a low level and a high level
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United States of America Patent
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Jul 27, 2004
Grant Date -
Apr 8, 2004
app pub date -
Oct 6, 2003
filing date -
Apr 4, 2001
priority date (Note) -
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Abstract
The invention provides a circuit configuration for demodulating a voltage that is ASK modulated by altering the amplitude between a low level and a high level. In this case, a first and a second charging circuit each produce a charging voltage and decoupling device decouples the first charging circuit when there is a prescribed ratio between the charging voltage of the second charging circuit and an input voltage for the rectifier circuit.
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