TY - JOUR 
A1 - Quesada Pereira, Fernando Daniel
AU - Vera Castejón, Pedro
AU - Álvarez Melcón , Alejandro
AU - Gimeno Martínez, Benito
AU - Boria Esbert, Vicente Enrique
T1 - An efficient integral equation technique for the analysis of arbitrarily shaped capacitive waveguide circuits
Y1 - 2011
SN - 0048-6604
UR - http://hdl.handle.net/10317/1752
AB - In this contribution a new and efficient integral equation formulation is presented for the analysis of arbitrarily shaped capacitive waveguide devices. The technique benefits from the symmetry of the structure in order to reduce the dimensions of the problem from three to two dimensions. For the first time, this technique formulates the waveguide capacitive discontinuity problem as a 2D scattering problem with oblique incidence, combined with an efficient calculation of the parallel plate Green's functions. The numerical method allows the efficient evaluation of the electromagnetic fields inside the analyzed structures. Results for different practical capacitive waveguide devices are successfully compared with commercial software tools for validation of the proposed
theory. Finally, a novel lowpass filter implementation based on circular conducting posts has been proposed. The field contour lines in the critical gaps of the new structure are curved due to the use of rounded posts. This could result in improved power handling capabilities with respect to standard corrugated lowpass filters.
KW - Teoría de la Señal y las Comunicaciones
KW - Integral equations
KW - Capacitive waveguide components
KW - Lowpass waveguide filters
LA - eng
PB - American Geophysical Union (AGU)
ER -