Title :
Microwave, millimeter wave and sub-millimeter wave free-space Faraday rotators
Author :
Smith, G.M. ; Kang, Sook-Yang ; Unsworth, Charles ; Puplett, E. ; Franklin, Daniel ; Lesurf, J.C.G.
Author_Institution :
Dept. of Phys. & Astron., St. Andrews Univ., UK
Abstract :
We report new loss and dispersive measurements on SrM hexagonal ferrites both in sintered form and in a plastic matrix showing their potential for providing high performance, free-space Faraday Rotators over large frequency ranges. SrM polycrystalline ferrites show a strong dispersion at frequencies below 150GHz which helps to account for their wideband performance at W-band. These ferrites have the advantage that they operate in their remnant state and require no external magnetic field and can act as isolators over extremely large apertures.<>
Keywords :
Faraday effect; ferrite isolators; magnetic microwave devices; magnetic millimetre wave devices; strontium compounds; submillimetre wave devices; 150 GHz; SrFe/sub 12/O/sub 19/; SrM polycrystalline hexagonal ferrites; W-band; apertures; dispersion; free-space Faraday rotators; isolators; loss; microwaves; millimeter waves; plastic matrix; remnant state; sintered form; sub-millimeter waves; wideband performance; Dispersion; Ferrites; Frequency measurement; Loss measurement; Magnetic fields; Millimeter wave measurements; Performance loss; Plastics; Rotation measurement; Wideband;
Conference_Titel :
Microwave Symposium Digest, 1995., IEEE MTT-S International
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-2581-8
DOI :
10.1109/MWSYM.1995.406297
