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Higher‐order infinite elements for quasi‐TEM analysis of microwave transmission lines using the finite‐element method
Author(s) -
PanticTanner Zorica,
Mittra Raj
Publication year - 1995
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650090506
Subject(s) - finite element method , transmission line , microwave , electric power transmission , mathematical analysis , computation , boundary value problem , reduction (mathematics) , polygon (computer graphics) , mathematics , transmission (telecommunications) , geometry , engineering , algorithm , structural engineering , telecommunications , electrical engineering , frame (networking)
Higher‐order infinite elements, which are compatible with ordinary finite elements, and which preserve the sparsity of the FEM equations, are derived for the quasi‐TEM analysis of open‐type microwave transmission lines. The shape of the outer boundary can be an arbitrary polygon and can be chosen to conform to the geometry of the transmission line etches. It is shown that the use of the infinite elements with higher‐order approximation of the radiation condition enhances the efficiency of the method as compared to the conventional FEM, by virtue of the reduction in the requirements for the memory and computation time. © 1995 John Wiley & Sons, Inc.