发明名称 |
WIDEBAND MULTIFREQUENCY ACOUSTIC TRANSDUCER |
摘要 |
A multifrequency acoustic transducer with a wide band around each resonant frequency is disclosed. A .lambda./4-resonant back film (202) is inserted between a .lambda./2 active transmitting film (201) and the soft reflector (203) on which it is supported, and two adaptive films (204, 205) with impedances intended to optimise matching of the two frequencies obtained by inserting said back film are placed on said active plate. Thicknesses of said match plates are optimised using a model such as a Mason model on the basis of a value adjacent to .lambda./4 for the frequency to be matched. Sonar transducers useful both for sensing and for classification may thus be achieved.
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申请公布号 |
CA2194605(A1) |
申请公布日期 |
1996.01.25 |
申请号 |
CA19952194605 |
申请日期 |
1995.06.16 |
申请人 |
THOMSON-CSF |
发明人 |
LE VERRIER, BERTRAND;ROUX, GERARD;TARDY, BRUNO;RAMOS, ALPHONSE |
分类号 |
G01N29/24;A61B8/00;B06B1/06;G01S7/521;H04R17/00;(IPC1-7):B06B1/06;G10K11/02 |
主分类号 |
G01N29/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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