%0 Journal Article 
%A Álvarez Melcón , Alejandro
%A Mosig, Juan Ramón
%T Two techniques for the efficient numerical calculation of the Green’s functions for planar shielded circuits and antennas
%D 2000
%@ 0018-9480
%U http://hdl.handle.net/10317/640
%X In this paper we present new contributions to the
computation of the Green’s functions arising in the analysis of multilayered
shielded printed circuits and antennas. First the quasistatic
term of the spectral domain Green’s functions is extracted
so that the convergence of the reminder dynamic modal series is
enhanced. Moreover, it is shown that by extracting a second-order
quasi-static term the convergence is further improved. In regard to
the quasi-static terms they are computed in the spatial domain by
numerically evaluating the associated spatial images series. Then a
new and efficient technique is developed for the summation of the
slowly convergent modal series. The technique can be viewed as
the application of the integration by parts technique to discrete sequences
and greatly accelerates the convergence rate of the series
involved. It is shown that the new algorithm is numerically very
robust and leads to a drastic reduction in the computational effort
and time usually required for the numerical evaluation of the
shielded Green’s functions.
%K Teoría de la Señal y las Comunicaciones
%K Convergencia de aceleración
%K Funciones Green
%K Serie infinita
%K Ecuaciones integrales
%K Antenas
%K Convergence acceleration
%K Infinite serie
%K Integral equation (IE)
%K Multilayer media
%K Shielded circuit
%K Green's functions
%K Boxed circuits
%K Cajas de circuitos
%K Circuitos protegidos
%~ GOEDOC, SUB GOETTINGEN