Transmitter for a controlled-shape switched signal on a communication line
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United States of America Patent
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May 26, 2009
Grant Date -
Jan 26, 2006
app pub date -
Oct 8, 2003
filing date -
Oct 31, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The transmitter comprises a signal generator including a capacitor producing the switched signal to be applied to the line. The capacitor is charged by a charging current in response to an input signal so as to define an edge of the switched signal through a feedback loop responsive to the capacitor voltage generating a feedback current having a continuous magnitude that is a progressive function of the capacitor voltage, the charging current being a function of the feedback current. The feedback loop generates first and second feedback voltages one of which is a rising function of the capacitor voltage and the other is a falling function of the capacitor voltage. The feedback current is generated first as a function of one of the feedback voltages and subsequently as a function of the other of the feedback voltages.
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