Efficient Calculation of the Green's Functions for Multilayered Shielded Cavities with Right Isosceles-Triangular Cross-Section
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AuthorGómez Díaz, Juan Sebastián; Martínez Mendoza, Mónica; Quesada Pereira, Fernando Daniel; Álvarez Melcón, Alejandro
Research GroupGrupo Electromagnetismo Aplicado a las Telecomunicaciones
Knowledge AreaTeoría de la Señal y las Comunicaciones
SponsorsThis work was partially supported by the Spanish Ministry of Education and Science under Grant FPU-AP2006-015 and with the Project TEC2007-67630-C03-02.
Realizado en/conUniversidad Politécnica de Cartagena
Bibliographic CitationJ.S. Gomez Diaz, M. Martinez Mendoza, F.D. Quesada Pereira, and A. Alvarez Melcon, IET Microwaves Antennas and Propagation. Vol. 3, No. 5, pp. 736--741, August 2009
An efﬁcient calculation of the Green’s functions inside multilayered shielded cavities with right isosceles-triangular cross-section is presented. The method is entirely developed in the spatial domain, and it is based on image theory. The idea is to use the spatial-domain Green’s functions inside a multilayered shielded square box, in order to accurately obtain the Green’s functions for the right isosceles-triangular cavity. Image theory is then used to enforce the boundary conditions along the non-equal side of the triangle. It is shown that the new algorithm is very robust, with limited computational effort. Resonance frequencies and potential patterns of a triangular cavity have been calculated and compared with those obtained by other techniques, showing very good agreement. Finally, a transversal ﬁlter inside a multilayered triangular-shaped cavity is designed, manufactured and tested using the developed technique.
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