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Numerical computation of PML absorbing coefficients for analysis of TEM and quasi‐TEM problems using ESN
Author(s) -
Bica Dragos,
Beker Benjamin
Publication year - 1999
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/(sici)1098-2760(19990420)21:2<134::aid-mop14>3.0.co;2-4
Subject(s) - finite difference time domain method , microwave , computation , lattice (music) , microstrip , reduction (mathematics) , mathematical analysis , materials science , mathematics , algorithm , optics , computational physics , computer science , physics , telecommunications , acoustics , geometry
This paper presents a numerical method for computing the PML absorbing coefficients for finite‐differencing schemes other than FDTD. The details of the proposed approach are demonstrated in the ESN (enhanced spatial network method) for TEM problems in one dimension (1‐D). It is shown that the same 1‐D absorbing coefficients can also be used in some problems in three dimensions, allowing for the reduction of artificial reflections from the lattice boundaries down to 52 dB. The performance of the “loss” coefficients is demonstrated in quasi‐TEM problems involving uniform and discontinuous microstrip geometries. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 21: 134–140, 1999.