公开(公告)号：US4220040A

公开(公告)日：1980-09-02

申请号：US956295

申请日：1978-10-31

申请人： Yasuo Noguchi ,  Taro Kokuzawa ,  Hideyuki Suzuki ,  Toru Yokose

发明人： Yasuo Noguchi ,  Taro Kokuzawa ,  Hideyuki Suzuki ,  Toru Yokose

IPC分类号： G01N9/00 ,  G01N29/00 ,  G01N29/024 ,  G01S1/72 ,  G01N29/02

CPC分类号： G01N29/024 ,  G01S1/72 ,  G01N2291/02809 ,  Y10S435/807

摘要： A measuring ultrasonic wave transmitter comprises a negative immitance converter inserted between an ultrasonic transmitting transducer and a drive amplifier for driving the transmitting transducer. The output impedance of the drive amplifier, the damping impedance of the transmitting transducer and the impedance between the transmitting transducer and the drive amplifier are offset by the negative impedance caused by the negative immitance converter. A measuring ultrasonic wave receiver comprises a negative immitance converter inserted between a receiving transducer and a pre-amplifier for amplifying the output of the receiving transducer. The damping admittance of the receiving transducer and the load admittance of the receiving transducer are offset by the negative admittance caused by the negative immitance converter.

摘要翻译： 测量超声波发射器包括插入超声波发射换能器和用于驱动发射换能器的驱动放大器之间的负像素转换器。 驱动放大器的输出阻抗，发射换能器的阻尼阻抗和发射换能器与驱动放大器之间的阻抗由负的负载转换器引起的负阻抗抵消。 测量超声波接收器包括插入在接收换能器和用于放大接收换能器的输出的前置放大器之间的负像素转换器。 接收传感器的阻尼导纳和接收传感器的负载导纳被负的负载转换器引起的负导纳偏移。