Use of ground planes within the spatial images technique: Application to the analysis of rectangular multilayered shielded enclosures

The use of ground planes is proposed inside the spatial images technique in order to calculate the multilayered shielded Green's functions for rectangular enclosures. The positions of the ground planes are dynamically located, covering two walls of the cavity, as a function of the source positi...

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Bibliographic Details
Published in2010 IEEE MTT-S International Microwave Symposium pp. 696 - 699
Main Authors Gomez-Diaz, J S, Garcia-Vigueras, M, Cañete-Rebenaque, D, Quesada-Pereira, F D, Álvarez-Melcón, A
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2010
Subjects
Boundary conditions
Computational modeling
Electromagnetic waveguides
Green's function methods
Image analysis
Microstrip filters
Mirrors
Nonhomogeneous media
Numerical stability
Resonance
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Summary:The use of ground planes is proposed inside the spatial images technique in order to calculate the multilayered shielded Green's functions for rectangular enclosures. The positions of the ground planes are dynamically located, covering two walls of the cavity, as a function of the source position. Spatial mirror images, related to the ground planes, are used to perfectly impose the boundary conditions along these cavity walls. This completely removes the problems associated to the singular behavior of the source when it is placed close to a wall or a corner, improving numerical stability. In addition, the method leads to a very efficient computation (about 15 times faster than the original approach), due to the reduced number of non-mirror images that must be effectively computed. A multi-band filter in hybrid waveguide-microstrip technology is analyzed with the new method, showing excellent agreement with measured data.
ISBN:1424460565
9781424460564
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2010.5515368