Accession Number : ADD013308

Title :   Electronically Simulated Rotating Prism for Ultrasonic Beam Scanning.

Descriptive Note : Patent, Filed 31 Jul 80, patented 13 Apr 82,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Auld, Bertram A

Report Date : 13 Apr 1982

Pagination or Media Count : 6

Abstract : A method and apparatus are described for electronically scanning a spherically focused beam in a c-scan mode using a spiral path rather than a traditional raster scan pattern. Essential to the technique is an electronically simulated rotating ultrasonic prism operating according to the general electrical input equation v (o) exp (i omega (o) t + ia cos (omega t) ). The technique allows use of a single delay line with simple connections and no requirements of multiple mixing.

Descriptors :   *PATENTS, *ELECTRONIC SCANNERS, DELAY LINES, EQUATIONS, INPUT, MIXING, PATHS, PATTERNS, PRISMS(OPTICS), RADAR SCANNING, RASTERS, REQUIREMENTS, ROTATION, SCANNING, SIMULATION, ULTRASONIC PROPERTIES, ULTRASONICS, CLINICAL MEDICINE

Subject Categories : Electrical and Electronic Equipment
      Medical Facilities, Equipment and Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE