发明名称 |
CdS Solid state phase insensitive ultrasonic transducer |
摘要 |
A phase insensitive ultrasonic transducer which includes a CdS crystal that is annealed for a selected period of time and at a selected temperature to provide substantially maximum acoustic attenuation at the operating frequency of the transducer. Two electrodes are attached to the crystal with amplifier means and a signal processing system connected to one of the electrodes to provide an ultrasonic receiver.
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申请公布号 |
US4195244(A) |
申请公布日期 |
1980.03.25 |
申请号 |
US19780928130 |
申请日期 |
1978.07.26 |
申请人 |
U S OF AMERICA NASA ADMINISTRATOR |
发明人 |
HEYMAN, JOSEPH S |
分类号 |
H04R17/00;B06B1/06;(IPC1-7):H01L41/18 |
主分类号 |
H04R17/00 |
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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