Accession Number : ADD004403

Title :   Elliptical Interdigital Transducer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Cohen,Paul B

Report Date : 20 Sep 1977

Pagination or Media Count : 4

Abstract : An elliptical, interdigital transducer having a plurality of concentric elliptically shaped conductive fingers situated in one quadrant of an ellipse and mounted on a piezoelectric material. Upon the application of an excitation frequency to said transducer a low frequency surface wave will propagate along the major axis of the ellipse and a high frequency surface wave will propagate along the minor axis of the ellipse. Resonance will occur at a predetermined point on a line through the elliptically-shaped fingers and the focus of the ellipse. (Author)

Descriptors :   *Patents, *Piezoelectric transducers, Ellipses, Surface waves, Acoustic waves, Orthogonality, High frequency, Low frequency

Subject Categories : Line, Surface and Bulk Acoustic Wave Devices
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE