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A comparison of the magnetic and electric field formulations and their postprocessing functionals in the finite element analysis of passive microwave devices
Author(s) -
Lawrence Ben G.,
Cambrell Gregory K.
Publication year - 1993
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/93rs00900
Subject(s) - finite element method , admittance parameters , bilinear interpolation , microwave , mathematical analysis , boundary value problem , admittance , electric field , mathematics , bilinear form , physics , voltage , electrical impedance , statistics , quantum mechanics , thermodynamics
Using a waveguide T junction and an orthogonal mode transducer as illustrative examples, the admittance matrix elements for a passive microwave device are computed by three‐dimensional finite element analysis from the magnetic field formulation having natural Neumann boundary conditions and from the electric field formulation having enforced Dirichlet boundary conditions. The results from these two formulations are compared using both linear and bilinear postprocessing functionals.