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Title: Ferrite phase shifters using stress insensitive materials. Final report, July 1991-July 1993

Abstract

This RD program sponsored by the Naval Research Laboratory and being conducted by EMS Technologies, Inc., Norcross, Georgia, is focused toward achieving improved performance in microwave switching components via use of stress insensitive' microwave ferrite materials for applications where stable hysteresis characteristics of the materials are critical to the RF performance. The program, therefore, primarily addresses how to relieve or improve the magnetostrictive characteristics of the materials with emphasis on the specific application and demonstration of these materials in microwave switching components, particularly ferrite toroidal phase shifters. Material investigations were focused on Mn+3 substitutions in Yttrium-gadolinium iron garnet. These compounds were evaluated in dual toroid waveguide phase shifter structures with temperature, pressure Rf power as variables Manganese substitution per formula unit for Fe+3 of 0.11 to 0.13 (2.2 to 2.6%) produced compounds which exhibited stable performance from magnetostrictive stresses in phaser structures. Ferrite phase shifters, Stress insensitive materials Manganese substitution in garnets, Magnetostrictive, Stresses in ferrite phasers.

Authors:
; ; ;
Publication Date:
Research Org.:
Electromagnetic Sciences, Inc., Norcross, GA (United States)
OSTI Identifier:
5249197
Alternate Identifier(s):
OSTI ID: 5249197
Report Number(s):
AD-A-274639/4/XAB
CNN: N00014-91-C-2202
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; FERRITE; MAGNETOSTRICTION; MICROWAVE RADIATION; PHASE SHIFT; SWITCHES; ALLOYS; CARBON ADDITIONS; ELECTRICAL EQUIPMENT; ELECTROMAGNETIC RADIATION; EQUIPMENT; IRON ALLOYS; MAGNETIC PROPERTIES; PHYSICAL PROPERTIES; RADIATIONS 360606* -- Other Materials-- Physical Properties-- (1992-)

Citation Formats

Vaughn, T., Cox, P., Harrison, G., and Rodrigue, P. Ferrite phase shifters using stress insensitive materials. Final report, July 1991-July 1993. United States: N. p., 1993. Web.
Vaughn, T., Cox, P., Harrison, G., & Rodrigue, P. Ferrite phase shifters using stress insensitive materials. Final report, July 1991-July 1993. United States.
Vaughn, T., Cox, P., Harrison, G., and Rodrigue, P. Fri . "Ferrite phase shifters using stress insensitive materials. Final report, July 1991-July 1993". United States. doi:.
@article{osti_5249197,
title = {Ferrite phase shifters using stress insensitive materials. Final report, July 1991-July 1993},
author = {Vaughn, T. and Cox, P. and Harrison, G. and Rodrigue, P.},
abstractNote = {This RD program sponsored by the Naval Research Laboratory and being conducted by EMS Technologies, Inc., Norcross, Georgia, is focused toward achieving improved performance in microwave switching components via use of stress insensitive' microwave ferrite materials for applications where stable hysteresis characteristics of the materials are critical to the RF performance. The program, therefore, primarily addresses how to relieve or improve the magnetostrictive characteristics of the materials with emphasis on the specific application and demonstration of these materials in microwave switching components, particularly ferrite toroidal phase shifters. Material investigations were focused on Mn+3 substitutions in Yttrium-gadolinium iron garnet. These compounds were evaluated in dual toroid waveguide phase shifter structures with temperature, pressure Rf power as variables Manganese substitution per formula unit for Fe+3 of 0.11 to 0.13 (2.2 to 2.6%) produced compounds which exhibited stable performance from magnetostrictive stresses in phaser structures. Ferrite phase shifters, Stress insensitive materials Manganese substitution in garnets, Magnetostrictive, Stresses in ferrite phasers.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Oct 01 00:00:00 EDT 1993},
month = {Fri Oct 01 00:00:00 EDT 1993}
}

Technical Report:
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