Tunable ultrasound transmitter
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United States of America Patent
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Aug 15, 2017
Grant Date -
Apr 14, 2016
app pub date -
Oct 19, 2015
filing date -
Jan 13, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
The use of power-efficient transmitters to establish acoustic wave energy having low undesirable harmonics is achieved by adjusting the transmitter output waveform to minimize the undesirable harmonics. In one embodiment, both the timing and slope of the waveform edges are adjusted to produce the desired output waveform having little or no second harmonics. In the embodiment, output waveform timing adjustments on the order of fractions of the system clock interval are provided. This then allows for very fine control of a coarsely produced waveform. In one embodiment, the user can select the fine tuning to match the transmitter output signal to a particular load transducer.
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