Title :
Three-dimensional finite element analysis of ferrite devices including spatial inhomogeneity of the permeability tensor
Author :
Anderson, B. ; Cendes, Z.
Author_Institution :
Ansoft Corp., Pittsburgh, PA, USA
Abstract :
This paper presents a full wave vector finite element analysis of microwave devices that utilize gyrotropic ferrite materials. The ferrite permeability tensor´s dependence upon the magnetostatic bias field is accounted for by determining the static fields using a three-dimensional finite element magnetostatic solver. This accounts for non-uniform demagnetization and the resulting spatial inhomogeneities in the full-wave high-frequency computations. Comparisons are made between the calculated S-parameters of a microstrip circulator and measured S-parameters.
Keywords :
S-parameters; ferrite circulators; finite element analysis; magnetic microwave devices; magnetic permeability; magnetostatic wave devices; magnetostatic waves; microstrip components; microwave circulators; S-parameters; ferrite devices; ferrite permeability tensor; full wave vector finite element analysis; gyrotropic ferrite materials; magnetostatic bias field; microstrip circulator; microwave devices; nonuniform demagnetization; permeability tensor; spatial inhomogeneity; static fields; three-dimensional finite element analysis; three-dimensional finite element magnetostatic solver; Demagnetization; Ferrite devices; Finite element methods; Gyrotropism; Magnetic analysis; Magnetic materials; Magnetostatic waves; Microwave devices; Permeability; Scattering parameters;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1996. AP-S. Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-3216-4
DOI :
10.1109/APS.1996.549560
