TY - JOUR 
A1 - Gómez Díaz, Juan Sebastián
AU - Martínez Mendoza, Mónica
AU - Quesada Pereira, Fernando Daniel
AU - Pascual García, Juan
AU - Pérez Soler, Francisco J.
AU - Álvarez Melcón , Alejandro
T1 - Numerical evaluation of the Green's functions for arbitrarily shaped enclosures
Y1 - 2007
UR - http://hdl.handle.net/10317/1272
AB - In this paper, a new spatial method has been implemented for the efficient calculation of the mixed potential Green's functions associated to electrical sources, when they are placed inside arbitrarily-shaped cylindrical cavities. The technique consists of placing electric dipole images and charges outside the cavity, imposing, at discrete points of the metallic wall, the appropriate boundary conditions for the potentials. Results show that the numerical convergence is attained fast. The cut-off frequencies and potential patterns for a trapezium-shaped waveguide are compared to those obtained by a standard finite elements technique, showing excellent agreement. Furthermore, a printed planar filter shielded in a square cavity has been analyzed with the new Green's functions, showing the practical value of the new theory.
KW - Teoría de la Señal y las Comunicaciones
KW - Cavidades
KW - Funciones de Green
KW - Circuitos impresos
KW - Filtros de guía de onda
KW - Onda guía
KW - Cavities
KW - Printed Circuit
KW - Waveguide filter
KW - Waveguide
KW - Green's functions
LA - eng
PB - Institute Electrical and Electronics Engineers (IEEE)
ER -