Accession Number : AD0164420

Title :   Coherent Frequency Hopped, Phase Modulated Acoustic Surface Wave Generator.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Bush,Henry J. ; Entzminger,John N. ; Richard,Walter R.

Report Date : 29 MAY 1973

Pagination or Media Count : 12

Abstract : The patent describes an apparatus using an acoustic surface wave having an ordered-code form to provide bi-phase modulation of an electromagnetic carrier frequency. A continuous stream of coded sequences is generated by using a tapped delay line as a sequence generator in conjunction with a shift register which is actuated by an adjustable reference code.

Descriptors :   *Waveform generators, *Patents, Surface waves, Acoustic delay lines, Phase modulation, Shift registers, Acoustic equipment, Coherent radiation

Subject Categories : Line, Surface and Bulk Acoustic Wave Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE