Surface wave modes of printed circuits on ferrite substrates

Author

Yang, Hung-Yu ; Castaneda, Jesse A. ; Alexopoulos, Nicolaos G.

Author_Institution

Phraxos Res. & Dev. Inc., Santa Monica, CA, USA

Volume

40

Issue

4

fYear

1992

fDate

4/1/1992 12:00:00 AM

Firstpage

613

Lastpage

621

Abstract

Surface waves due to a current source on a grounded ferrite slab are investigated. Electromagnetic fields of the structure are in terms of a continuous plane wave spectrum. The spectrum of each field component is obtained numerically through the exponential-matrix method. The surface waves of the structure are extracted from the continuous spectrum by using the residue theorem and the method of steepest descent. Two types of surface waves are found and their properties are described. The surface wave modes found include dynamic surface wave modes which are closely related to the surface waves of a grounded dielectric slab, and magnetostatic surface wave modes which are related to the solution of Laplace´s equation for the magnetic potential

Keywords

electromagnetic field theory; ferrite applications; magnetostatic waves; matrix algebra; microwave circuits; printed circuits; strip line components; substrates; EM fields; Laplace´s equation; continuous plane wave spectrum; current source; dynamic surface wave modes; exponential-matrix method; ferrite substrates; field component; grounded ferrite slab; gyrotropic substrate; magnetic potential; magnetostatic surface wave modes; printed circuits; residue theorem; steepest descent; Equations; Ferrites; Magnetic anisotropy; Magnetic materials; Perpendicular magnetic anisotropy; Printed circuits; Saturation magnetization; Sea surface; Slabs; Surface waves;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.127507

Filename

127507