ULTRASONIC TRANSDUCER
PROBLEM TO BE SOLVED: To provide an ultrasonic transducer that allows widening the frequency bandwidth capable of performing impedance matching.SOLUTION: An ultrasonic transducer 100 includes: a piezoelectric element 1 that generates an ultrasonic wave, receives a reflection wave from a test object,...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an ultrasonic transducer that allows widening the frequency bandwidth capable of performing impedance matching.SOLUTION: An ultrasonic transducer 100 includes: a piezoelectric element 1 that generates an ultrasonic wave, receives a reflection wave from a test object, and outputs the reflection wave; and a resistive element 2, a resistive element 3, and an inductor 4 that are connected to the piezoelectric element 1. A constant resistance circuit is constituted from the piezoelectric element 1, the resistive element 2, the resistive element 3, and the inductor 4.
【課題】インピーダンス整合を行うことができる周波数帯域を広くすることが可能な超音波トランスデューサを提供する。【解決手段】この超音波トランスデューサ１００は、超音波を発生するとともに被検体からの反射波を受波して出力する圧電素子１と、圧電素子１に接続される、抵抗素子２、抵抗素子３およびインダクタ４とを備え、圧電素子１と、抵抗素子２、抵抗素子３およびインダクタ４とによって定抵抗回路が構成されている。【選択図】図１ |
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