  A lumped-parameter impedor-oriented and a 2-port-network-oriented circuit
models for the Sierpinski gasket prefractal antenna are presented. With the
former, the voltage and current patterns give a detailed understanding of the
electromagnetic fields' self-similar distribution throughout the antenna
geometry; on the other hand model complexity exponentially increases with the
prefractal iteration order. The latter "black-box" model only controls
port-oriented global parameters which are the ones commonly used in antennas'
circuit models and its complexity is independent of prefractal order. The
"black-box" model is also shown to converge, at fractal limit, to a reciprocal
triangular network.
