Simple method for generating the monopole ultrasonic pulse and its sound field

Kazuhiko Imano, Hiroshi Inoue

    Research output: Contribution to journalConference articlepeer-review


    The cycloid function voltage having no resonant component is applied to the piezo-ceramic planar and concave circular transducers to generate the monopole ultrasonic pulse. On-axis pressure characteristics of two kinds of transducer are observed using monopole ultrasonic pulse. As the experimental results, 1) the sound field of monopole ultrasonic pulse is consisted of direct wave and edge wave, and these are separated in time near the transducer, 2) the monopole ultrasonic pulse from a planar transducer becomes bipolar pulse in the large distance from the transducer and 3) in case of the concave transducer, the monopole ultrasonic pulse is gradually changed to the bipolar pulse around the focus, are clearly observed. These experimental results can be explained by the interference between direct wave and edge wave using monopole ultrasonic pulse. A possibilities of the diffraction effect which dominated at the focus of concave transducer is also suggested.

    Original languageEnglish
    Pages (from-to)1017-1019
    Number of pages3
    JournalProceedings of the IEEE Ultrasonics Symposium
    Publication statusPublished - 1997 Dec 1
    EventProceedings of the 1997 IEEE Ultrasonics Symposium. Part 1 (of 2) - Toronto, Can
    Duration: 1997 Oct 51997 Oct 8

    ASJC Scopus subject areas

    • Acoustics and Ultrasonics


    Dive into the research topics of 'Simple method for generating the monopole ultrasonic pulse and its sound field'. Together they form a unique fingerprint.

    Cite this