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Title:
ULTRASONIC TRANSDUCER
Document Type and Number:
WIPO Patent Application WO/2014/171219
Kind Code:
A1
Abstract:
The present invention provides an ultrasonic transducer capable of expanding a frequency bandwidth in which impedance matching can be performed. Specifically, this ultrasonic transducer (100) is provided with a piezoelectric element (1) for generating an ultrasonic wave and receiving a reflected wave from an object to be tested before outputting the received wave, and a resistive element (2), a resistive element (3), and an inductor (4) connected to the piezoelectric element (1), a constant-resistance circuit being configured from the piezoelectric element (1), the resistive element (2), the resistive element (3), and the inductor (4).

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Inventors:
ONODERA AKIRA (JP)
TATSUGUCHI KOJI (JP)
TANASE DAISUKE (JP)
Application Number:
PCT/JP2014/055905
Publication Date:
October 23, 2014
Filing Date:
March 07, 2014
Export Citation:
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Assignee:
TORAY ENG CO LTD (JP)
International Classes:
H04R3/00; A61B8/00; H04R17/00
Foreign References:
JP2001086587A2001-03-30
JPH02265681A1990-10-30
JP2004097588A2004-04-02
JPH10135761A1998-05-22
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