Accession Number : ADD003218

Title :   Directional Low-Frequency Ring Hydrophone.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Rogers,Peter H ; Zalesak,Joseph F

Report Date : 21 Sep 1976

Pagination or Media Count : 9

Abstract : The patent relates to a small low frequency acoustic receiver which is formed into a cylinder or ring by use of a plurality of separate elements of piezoelectric material. Each element is secured with its sides in face-to-face relationship with an electrode between each joined face in contact with each adjacent element. The electrodes are alternately connected into an electrical circuitry for transmitting electrical signals to a receiver.

Descriptors :   *Hydrophones, *Patents, Extremely low frequency, Directional, Rings, Piezoelectric materials, Receivers, Cylindrical bodies, Barium titanates

Subject Categories : Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE