Title :
Edge elements and the inclusion condition [EM eigenproblems]
Author :
Caorsi, S. ; Fernandes, Paulo ; Raffetto, M.
Author_Institution :
Dipartimento di Elettronica, Pavia Univ., Italy
fDate :
7/1/1995 12:00:00 AM
Abstract :
For many years the finite element solution of electromagnetic eigenproblems has been corrupted by spurious modes. This work proves that the inclusion condition is sufficient but not necessary for the absence of nonzero frequency spurious modes. This is done by showing through a simple example that edge elements, a well known spurious-free technique, do not satisfy the inclusion condition
Keywords :
eigenvalues and eigenfunctions; electromagnetic field theory; finite element analysis; FEM; edge elements; electromagnetic eigenproblems; finite element solution; inclusion condition; nonzero frequency spurious modes; Cavity resonators; Eigenvalues and eigenfunctions; Electromagnetic fields; Electromagnetic waveguides; Finite element methods; Frequency; Helium; Lagrangian functions; Physics computing; Sufficient conditions;
Journal_Title :
Microwave and Guided Wave Letters, IEEE