Title :
Influence of nonuniform magnetic field on a ferrite junction circulator
Author :
How, H. ; Oliver, S.A. ; McKnight, S.W. ; Zavracky, P.M. ; McGruer, N.E. ; Vittoria, C. ; Schmidt, R.
Author_Institution :
Appl. Res. Technol. Inc., Belmont, MA, USA
fDate :
10/1/1999 12:00:00 AM
Abstract :
We have analytically formulated the problem that a ferrite circulator junction is biased by a nonuniform magnetic field. Interport impedances of the junction can, therefore, be solved numerically. Nonuniform-bias field will reduce the transmission bandwidth, and the circulation condition is apt to be altered if the bias field shows nonuniformity near the center of the junction. Our calculation compares very well with measurements
Keywords :
ferrite circulators; magnetic fields; microwave circulators; waveguide junctions; circulation condition; ferrite junction circulator; interport impedances; nonuniform magnetic field; nonuniform-bias field; transmission bandwidth; Bandwidth; Ferrites; Magnetic analysis; Magnetic field measurement; Magnetic fields; Magnetic resonance; Maxwell equations; Nonuniform electric fields; Radio frequency; Saturation magnetization;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
