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1 MHz Ultrasonic Transducer Operating in Air

  • Tsutomu Yano
  • Masayuki Tone
  • Akira Fukumoto
Part of the Acoustical Imaging book series (ACIM, volume 14)

Abstract

Conventional ultrasonic air transducers operating below 100 kHz have been utilized for position sensing in the range of 0.1–10m and provide several unique advantages. A typical application of an ultrasonic air transducer is to the wide range distance measurement of an optically transparent object placed “very close to” up to “relatively far from” the transducer. Additionally the real-time measurement can be done with simple signal processing. However, conventional air transducers have very wide beamwidths and relatively long pulse response characteristics which make it difficult to detect a small and nearby object.

Keywords

Insertion Loss Acoustic Impedance Acoustic Property Range Finder Matching Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1985

Authors and Affiliations

  • Tsutomu Yano
    • 1
  • Masayuki Tone
    • 1
  • Akira Fukumoto
    • 1
  1. 1.Matsushita Research Institute Tokyo, Inc.Tama-ku, KawasakiJapan

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