Nonlinear intermodulation coupling in ferrite circulator junctions

Author

How, Hoton ; Vittoria, Carmine ; Schmidt, Ronald

Author_Institution

ElectroMagnetic Applications Inc., Boston, MA, USA

Volume

45

Issue

2

fYear

1997

fDate

2/1/1997 12:00:00 AM

Firstpage

245

Lastpage

252

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;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.557606

Filename

557606