Beamforming with Acoustic Lenses and Filter Plates

  • Robert L. Sternberg

Abstract

A survey is presented of a variety of known acoustic beamforming methods and techniques using acoustic lenses and filter plates as receivers, the former leading to receiving beams with frequency dependent or variable beamwidths and the latter to beam formation with frequency independent or constant beamwidths. In addition, a potentially useful method of forming approximately frequency independent receiving beams using twisted wavefront acoustic lenses based on a concept going back to Morris and Tucker is outlined. As transmitters it is noted that acoustic lenses are generally of little use because of power radiation limitations imposed by cavitation, but as receivers they have much in their favor.

Keywords

Microwave Rubber Radar Retina Polystyrene 

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References

  1. Tucker, D.G., “Arrays with Constant Beamwidth Over a Wide Frequency Range”, NATURE, Vol. 180, 1957, pages 496–497.ADSCrossRefGoogle Scholar
  2. Morris, J.C., “Broadband Constant Beamwidth Transducers”, J. Sound Vib., Vol. 1, 1964, pages 28–40.ADSCrossRefGoogle Scholar
  3. Sternberg, R.L., Anderson, W.A. and Stevens, G.T., “Log-Periodic Acoustic Lens-Acoustic Filter Plate Study”, J. Acoust. Soc. Am., Vol. 59, 1976, pages 1104–1109.CrossRefGoogle Scholar
  4. Sternberg, R.L. and Anderson, W.A., “Frequency Independent Beamforming”, NAVAL RESEARCH REVIEWS, Vol. 33, Fall/Winter 1980/81, pages 34–47.Google Scholar
  5. Sternberg, R.L., Anderson, W.A., Dickson, O.P., Ilson, A.F. and Marchese, P.S., “Log-Periodic Acoustic Lens-Acoustic Filter Plate Study II”, J. Acoust. Soc. Am., Vol. 73, 1983, pages 2193–2199.ADSCrossRefGoogle Scholar
  6. Sternberg, R.L., “A Survey of Numerical Methods for a New Class of Nonlinear Partial Differential Equations Arising in Nonspherical Geometrical Optics”, PROCEEDINGS OF THE 11TH IMACS WORLD CONGRESS, Vol. 1, NUMERICAL ANALYSIS AND APPLICATIONS Edited by R. Vichnevetsky and J. Vignes, North Holland Publishers to appear circa 1986–87.Google Scholar

Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • Robert L. Sternberg
    • 1
  1. 1.Office of Naval ResearchBostonUSA

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