发明名称 CDS SOLID STATE PHASE INSENSITIVE ULTRASONIC TRANSDUCER
摘要 <p>Title: A Phase Insensitive Ultrasonic Transducer 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.</p>
申请公布号 CA1136260(A) 申请公布日期 1982.11.23
申请号 CA19790332405 申请日期 1979.07.24
申请人 NATIONAL AERONAUTICS AND SPACE ADMINISTRATION 发明人 HEYMAN, JOSEPH S.
分类号 H04R17/00;B06B1/06;(IPC1-7):04R21/00 主分类号 H04R17/00
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