Analytical treatment of Green's functions singularities in microstrip structures

Abstract

Two microstrip structures using four different schemes are analyzed. Simulations are made in a Pentium III 450 MHz machine. Results showed that piecewise lineal model with four points including analytical singular is as good as piecewise linear with eight points and 3.7 times faster. Piecewise lineal with four points without singularities is clearly bad and very inestable. Piecewise sinusoid is better than the other models simulating the meander because it's well suited for modeling current distributions along narrow strips. On the other hand it's eight times slower.