Title :
Self-biased circulator/isolator at millimeter wavelengths using magnetically oriented polycrystalline strontium M-type hexaferrite
Author :
Zuo, Xu ; How, Hoton ; Somu, Sivasubramanian ; Vittoria, Carmine
Author_Institution :
Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA
Abstract :
A self-biased circulator/isolator operating at millimeter wavelength has been designed, fabricated, and tested. The ferrite material used in the device, magnetically oriented polycrystalline strontium M-type hexaferrite (SrFe12O19, SrM), was characterized by vibrating sample magnetometer and ferromagnetic resonance. The measurement of S-parameters indicated that at 41 GHz, the isolation was 28 dB and the insertion loss was 4 dB.
Keywords :
ferrite circulators; ferrite isolators; ferrites; ferromagnetic resonance; microwave circulators; microwave isolators; strontium compounds; 4 dB; 41 GHz; S-parameters; SrFe12O19; ferromagnetic resonance; magnetically oriented polycrystalline strontium M-type hexaferrite; millimeter wavelengths; self-biased circulator/isolator; vibrating sample magnetometer; Automatic testing; Ferrites; Isolators; Loss measurement; Magnetic devices; Magnetic materials; Magnetic resonance; Magnetometers; Millimeter wave measurements; Strontium;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.816043
