Accession Number : AD0480598

Title :   MICROWAVE ELECTRONICALLY VARIABLE TIME DELAY DEVICE STUDY.

Descriptive Note : Final rept. Dec 64-Dec 65,

Corporate Author : LITTON INDUSTRIES COLLEGE PARK MD AMECOM DIV

Personal Author(s) : Sparks, R. A. ; Burke, E. R. ; Hess, R. E. ; Higgins, E. L.

Report Date : MAR 1966

Pagination or Media Count : 146

Abstract : The investigation of microwave delay processes in ferrimagnetic materials is described that includes magnetostatic and magnetoelastic waves. Emphasis was placed on the development of two-part devices based on the transmission mode of magnetoelastic wave propagation. In order to compensate for the conversion losses and medium attenuation a parallel study of the parametric amplification of elastic and magnetoelastic waves was undertaken. As a result of these studies, it has been demonstrated that variable delay lines with net gain are feasible at room temperature in the microwave frequency range. (Author)

Descriptors :   *ELECTROMAGNETIC RADIATION), *FERROMAGNETIC MATERIALS), (*PARAMETRIC AMPLIFIERS, (*DELAY LINES, MAGNETIC FIELDS, ATTENUATION, PROPAGATION, NUCLEAR MAGNETIC RESONANCE, IMPEDANCE MATCHING, TUNNEL DIODES, TRANSIENTS, PUMPING(ELECTRONICS), YTTRIUM COMPOUNDS, IRON ALLOYS, GARNET, MICROWAVE FREQUENCY, WAVE PROPAGATION, WAVEGUIDES, S BAND, TIMING DEVICES, L BAND, RODS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE