Title :
Nonlinear intermodulation coupling in ferrite circulator junctions
Author :
How, Hoton ; Vittoria, Carmine ; Schmidt, Ronald
Author_Institution :
ElectroMagnetic Applications Inc., Boston, MA, USA
fDate :
2/1/1997 12:00:00 AM
Abstract :
We have solved the nonlinear intermodulation coupling problem of a planar ferrite junction containing 3N ports. The coupling is represented as driving currents within the junction, and the induced fields can be solved by using the radiation and the boundary-value Green´s functions. Maximum coupling of intermodulations occur if the excitation frequencies at the ports are close to the circulation frequency of the circulator. Also, we find that the static demagnetizing field can effectively increase the intermodulation output power
Keywords :
Green´s function methods; Helmholtz equations; demagnetisation; ferrite circulators; intermodulation; multiport networks; waveguide discontinuities; 3N ports; Helmholtz equations; boundary-value Green´s functions; circulation frequency; driving currents; excitation frequencies; ferrite circulator junctions; induced fields; intermodulation output power; nonlinear intermodulation coupling; planar ferrite junction; static demagnetizing field; Cellular phones; Couplings; Demagnetization; Ferrites; Frequency; Magnetization; Maxwell equations; Nonlinear equations; Power generation; Telephony;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
