Phase plug
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United States of America Patent
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Feb 21, 2012
Grant Date -
Nov 18, 2010
app pub date -
Apr 13, 2007
filing date -
Apr 13, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A phase plug comprises a body having an input side for receiving acoustic waves and an output side for transmitting acoustic waves, the body including a plurality of channels extending from the input side to the output side for propagating acoustic waves through the body. The input side comprises an input surface which includes a plurality of slots constituting entrances for the channels, each slot being arranged in a substantially radial orientation on the input surface about a central axis extending through the input surface. Substantially the entire input surface situated between the slots is concave and substantially part of a sphere or an ellipsoid in shape.
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