Title :
Auxiliary vector function method for vector variational approach for the solution of complex anisotropic media using the finite element numerical method
Author :
Krowne, C.M. ; Salvino, R.E.
Author_Institution :
US Naval Res. Lab., Washington, DC, USA
fDate :
June 28 1993-July 2 1993
Abstract :
An approach which is compatible with finite element solutions of electromagnetic problems is considered. Construction of a modified energy type expression for a general linear anisotropic medium which does not possess Hermitian properties is undertaken. From this energy expression a modified energy functional is derived which is shown to have volumetric and surface parts. Volumetric parts contain electromagnetic governing equations of the media, and surface parts provide constraints on field components on interfacial boundaries. Spurious mode elimination is available through these surface parts. Media examined include gyroelectric, gyromagnetic, combined gyroelectric and gyromagnetic, and complex media displaying gyroelectric, gyromagnetic, and optical activities.<>
Keywords :
Helmholtz equations; boundary-value problems; electromagnetic wave propagation; finite element analysis; functional equations; gyromagnetic effect; interface phenomena; variational techniques; vectors; auxiliary vector function; complex anisotropic media; constraints; electromagnetic problems; field components; finite element numerical method; gyroelectric; gyromagnetic; interfacial boundaries; linear anisotropic medium; modified energy functional; spurious mode elimination; Anisotropic magnetoresistance; Electromagnetic fields; Finite element methods; Gyromagnetism; Laboratories; Maxwell equations; Microwave technology; Microwave theory and techniques; Optical surface waves; Vectors;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385319
