Imaging system with transmit apodization using pulse width variation
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United States of America Patent
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Oct 24, 2000
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N/A
app pub date -
Dec 7, 1998
filing date -
Dec 7, 1998
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Abstract
A coherent imaging system having a phased array of transmit elements provides for transmit apodization (or weighting) by controlling pulse width of the transmit pulses on every channel. Conventional transmit apodization requires a channel-by-channel voltage (or current) control which, because of its complexity, is expensive to implement. Pulse width weighting applies the same peak voltage/current but controls pulse power by changing the duty cycle of the pulse.
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