Title :
Ferrite phase shifters using stress-insensitive garnet materials
Author :
Vaughn, J. Todd ; Cox, Paul R. ; Rodrigue, G.P. ; Harrison, Gordon R.
Author_Institution :
EMS Technol. Inc., Norcross, GA, USA
fDate :
5/1/1995 12:00:00 AM
Abstract :
Stable hysteresis characteristics of ferrimagnetic materials are critical to the RF performance of microwave ferrite toroidal phasers. Particularly troublesome are the magnetostrictive characteristics where the hysteresis properties are altered by stress. This paper presents the results of a study addressing Mn+3 substitutions in garnets to improve the resultant magnetostrictive characteristics in order to achieve stress-insensitive performance in waveguide toroidal phasers
Keywords :
ferrite phase shifters; gadolinium compounds; garnets; magnetostrictive devices; microwave phase shifters; waveguide components; yttrium compounds; RF performance; Y1.7Gd1.3Fe5-xMnx0 12; Y1.7Gd1.3Fe5MnO12; YGdFe5O12Mn5O12; YGdIGMn5O12; ferrite phase shifters; hysteresis characteristics; magnetostrictive characteristics; microwave ferrite toroidal phasers; stress-insensitive garnet materials; waveguide toroidal phasers; Ferrimagnetic materials; Ferrites; Garnets; Hysteresis; Magnetic materials; Magnetic properties; Magnetostriction; Phase shifters; Radio frequency; Toroidal magnetic fields;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
