Acoustic Yagi-Uda antenna using resonance tubes

Yuki Tamura, Kohei Yatabe, Yasuhiro Ouchi, Yasuhiro Oikawa, Yoshio Yamasaki

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    A Yagi-Uda antenna gets high directivity by applying current phase shift between elements due to resonance phenomena. It has some directors and reflectors, which are elements without electric supply. The length of directors is shorter than half-wave and that of reflectors is longer than half-wave. We proposed an acoustic Yagi-Uda antenna which elements are resonance tubes and a loudspeaker. The aim of this research is to im- prove directivity in a specific frequency. This can be applied to Radio Acoustic Sounding System (RASS), which is a kind of radar for weather observation, or to a parametric loudspeaker. The phase shift of sound waves was observed in the condition with a resonance tube and without the tube at the same position. That shift changes suddenly around the resonance frequency of the tube. Our acoustic antenna has resonance tubes that have different length as directors and reflectors to apply this phenomenon. Moreover, the distances be- Tween a loudspeaker and tubes were concerned by some experiments and by numerical analysis. The acoustic antenna showed directivity in an appropriate condition of the distances and the frequency of the sound source. It will be also added the consideration about the effective frequency band of this acoustic antenna.

    Original languageEnglish
    Title of host publicationINTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control
    PublisherAustralian Acoustical Society
    ISBN (Print)9780909882037
    Publication statusPublished - 2014
    Event43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014 - Melbourne
    Duration: 2014 Nov 162014 Nov 19

    Other

    Other43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014
    CityMelbourne
    Period14/11/1614/11/19

    Fingerprint

    Yagi antennas
    tubes
    acoustics
    loudspeakers
    directivity
    reflectors
    antennas
    acoustic sounding
    phase shift
    sound waves
    weather
    numerical analysis
    radar
    shift

    Keywords

    • Director
    • Parametric loudspeaker
    • Phase shift
    • RASS
    • Reflector
    • Resonance phenomena

    ASJC Scopus subject areas

    • Acoustics and Ultrasonics

    Cite this

    Tamura, Y., Yatabe, K., Ouchi, Y., Oikawa, Y., & Yamasaki, Y. (2014). Acoustic Yagi-Uda antenna using resonance tubes. In INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control Australian Acoustical Society.

    Acoustic Yagi-Uda antenna using resonance tubes. / Tamura, Yuki; Yatabe, Kohei; Ouchi, Yasuhiro; Oikawa, Yasuhiro; Yamasaki, Yoshio.

    INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society, 2014.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Tamura, Y, Yatabe, K, Ouchi, Y, Oikawa, Y & Yamasaki, Y 2014, Acoustic Yagi-Uda antenna using resonance tubes. in INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society, 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014, Melbourne, 14/11/16.
    Tamura Y, Yatabe K, Ouchi Y, Oikawa Y, Yamasaki Y. Acoustic Yagi-Uda antenna using resonance tubes. In INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society. 2014
    Tamura, Yuki ; Yatabe, Kohei ; Ouchi, Yasuhiro ; Oikawa, Yasuhiro ; Yamasaki, Yoshio. / Acoustic Yagi-Uda antenna using resonance tubes. INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society, 2014.
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    AU - Yamasaki, Yoshio

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