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Analysis of waveguide discontinuities using a hybrid method combining the Helmholtz weak form and mode expansion
Author(s) -
Wu H. C.,
Dou W. B.
Publication year - 2004
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.20411
Subject(s) - classification of discontinuities , helmholtz equation , helmholtz free energy , microwave , finite element method , waveguide , discontinuity (linguistics) , mode (computer interface) , plane (geometry) , mathematical analysis , space (punctuation) , waveguide filter , physics , mathematics , filter (signal processing) , engineering , optics , geometry , computer science , structural engineering , electrical engineering , quantum mechanics , low pass filter , prototype filter , boundary value problem , operating system
A new approach for the analysis of waveguide multiports discontinuities is presented in this paper. This approach is a combined method of the mode‐expansion method and finite‐element method, which is based on the weak form of the Helmholtz equation. We use a mode expansion technique other than PML to truncate the computing space of finite element. Multiport structures such as H‐Plane forked T‐junction, waveguide loaded with two dielectric posts, and E‐plane filter are studied as examples. The calculated results of these structures are shown and compared, respectively, to those in references. Good agreement between them is observed. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 43: 173–177, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20411