Accession Number : AD0814992

Title :   SOLID STATE PULSE COMPRESSION TECHNIQUES.

Descriptive Note : Final rept. Jan 66-Jan 67,

Corporate Author : LITTON INDUSTRIES COLLEGE PARK MD AMECOM DIV

Personal Author(s) : Burke, Edward R. ; Higgins, Edward L.

Report Date : APR 1967

Pagination or Media Count : 70

Abstract : A microwave pulse compression filter has been obtained at S-band and room temperature by using the dispersive characteristics of propagating magnetostatic spin waves in single crystal rods of yttrium iron garnet. The maximum pulse compression ratio was 60 but higher values should be possible with faster sweep rates and more precise sweep matching than could be obtained with our equipment. The maximum input pulse width that could be effectively used was about 2 microseconds which seems to be a natural limit of the material due to increased attenuation for longer time delays. The overall insertion loss that can be obtained using magnetostatic waves is less than that using the magneto-elastic mode of propagation. The behavior of the system can be described in terms of the usual pulse compression analysis by a simple extension to the special case of propagating magnetostatic waves. (Author)

Descriptors :   *ELECTROMAGNETIC WAVE FILTERS), (*PULSE COMPRESSION, SINGLE CRYSTALS, ATTENUATION, DELAY LINES, YTTRIUM, IRON, PROPAGATION, S BAND, SCATTERING, OPTIMIZATION, GARNET.

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE