DocumentCode
1227933
Title
A modified unsplit PML formulation for evanescent mode absorption in waveguides
Author
Ozkar, Mete ; Lazzi, Gianluca ; Mortazawi, Amir
Author_Institution
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA
Volume
13
Issue
6
fYear
2003
fDate
6/1/2003 12:00:00 AM
Firstpage
220
Lastpage
222
Abstract
In this letter, a modified unsplit perfectly matched layer (PML) formulation for the absorption of evanescent waves in waveguides is presented. The proposed formulation combines the advantages of the stretched coordinate and unsplit D - E - H PML formulations, which separates PML conductivities from the properties of the physical materials in the FDTD mesh. Results show that the proposed boundary outperforms the traditional unsplit PML in the evanescent region by 20 to 40 dB.
Keywords
finite difference time-domain analysis; mesh generation; waveguide theory; FDTD mesh; evanescent mode absorption; modified unsplit PML formulation; perfectly matched layer; stretched coordinate; unsplit D - E - H PML formulations; waveguides; Absorption; Conductivity; Electromagnetic scattering; Electromagnetic waveguides; Finite difference methods; Frequency domain analysis; GSM; Maxwell equations; Time domain analysis; Transmission line matrix methods;
fLanguage
English
Journal_Title
Microwave and Wireless Components Letters, IEEE
Publisher
ieee
ISSN
1531-1309
Type
jour
DOI
10.1109/LMWC.2003.814109
Filename
1208413
Link To Document