Browsing by Keywords "Acoustic transducers"

Now showing items 1-7 of 7

    • A backscattering formula for acoustic transducers 

      Atalar, Abdullah (A I P Publishing, 1980-06)
      A backscattering formula for a single transducer geometry is derived. It expresses the output voltage of the transducer in terms of the angular spectra of scalar and vector acoustic potentials on a plane. The formulation ...

    • Microfabricated ultrasonic transducers: towards robust models and immersion devices 

      Ladabaum, I.; Jin, X.; Soh, H. T.; Pierre, F.; Atalar, Abdullah; Khuri-Yakub, B. T. (IEEE, 1996-11)
      The successful fabrication of ultrasonic immersion transducers is reported. Transducers are observed to operate from 1 MHz to 20 MHz in water, with the frequency range limited by electronics, not the transducers. Transmission ...

    • Micromachinable leaky wave air transducers 

      Değertekin, F. L.; Atalar, Abdullah; Khuri-Yakub, B. T. (IEEE, 1997-11)
      In this paper, ultrasonic air transducers which use the lowest order antisymmetric (A/sub 0/) mode Lamb waves in a thin plate as a means of efficient coupling of ultrasonic energy to air are discussed. For a silicon plate ...

    • A new directional acoustic lens: V-groove lens 

      Bozkurt, Ayhan; Yaralıoğlu, G. Göksenin; Atalar, Abdullah; Köymen, Hayrettin (IEEE, 1993)
      A new directional acoustic lens is introduced. The geometry is very similar to the line-focus lens except the lens cavity, which is shaped as a groove with flat-bottom V cross section. The slanted planar edges of the groove ...

    • A synthetic aperture imaging system using surface wave modes 

      Bozkurt, Ayhan; Arıkan, Orhan; Atalar, Abdullah (IEEE, 1995)
      A synthetic aperture acoustic imaging system with a novel inversion algorithm is described. Data is obtained by using a transducer insonifying the sample surface at a critical angle which is excited by a short electrical ...

    • Use of a conical axicon as a surface acoustic wave focusing device 

      Atalar, Abdullah; Köymen, Hayrettin (IEEE, 1987-01)
      Ultrasonic axicons generate waves which focus on a line. They are used in various imaging applications as hulk wave focusing devices with a very long depth of focus. A new type of conical axicon is introduced. It consists ...

    • A wideband and a Wide-Beamwidth acoustic transducer design for underwater acoustic communications 

      Elmaslı, I. Ceren; Köymen, Hayrettin (IEEE, 2007-05)
      This paper is concerned with the design of an efficient, wideband and a wide-beamwidth resonant acoustic transducer for high frequency use. The general transducer structure which has two back-to-back quarter wave thick 1-3 ...