Transducer testing
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United States of America Patent
Stats
-
Mar 17, 1992
Grant Date -
N/A
app pub date -
Jul 12, 1990
filing date -
Oct 30, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A phased array of transducers is placed in contact with a block (15) of sound absorbent material surrounded by a housing (12) in such a manner that the block and housing together define an effectively anechoic chamber. A plurality of transducer elements (20) mounted within the block (15) are driven by variable phased drive electronics so as to simulate acoustic plane waves. The receiver field sensitivity of the array is measured. Alternatively the transducers under test may be driven and the transducer elements (20) are used to measure the amplitude and phase of the acoustic wave emanating from the array under test.
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