Article

Finite element analysis of multiport filters using perfectly matched layers

IGTE, Tech. Univ. Graz
IEEE Transactions on Magnetics (impact factor: 1.36). 04/1997; DOI:10.1109/20.582540 pp.1480 - 1483
Source: IEEE Xplore

ABSTRACT A 3D edge finite element analysis is presented to calculate the
resonance frequencies and quality factors of inhomogeneously loaded
cavity resonators (filters) terminated by waveguides (ports). The
matching of the ports is modeled by perfectly matched layers (PML). The
selection of the PML parameters is discussed. A complex nonlinear
eigenvalue problem is obtained which is solved by a special solver with
the sparsity of the matrices fully utilized. An approximation is applied
to reconstruct the frequency response of the scattering parameters from
the field calculated at the resonance frequencies

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Keywords

3D edge finite element analysis
 
filters
 
frequency response
 
matrices
 
PML
 
PML parameters
 
ports
 
quality factors
 
scattering parameters
 
special solver