Experimental and computed results of a frequency selective surface (FSS) based on a certain type of fractal element are presented. The fractal element is a two iteration Sierpinski gasket dipole. Owing to the dual band behaviour of the two iteration Sierpinski gasket dipole, two stopbands are exhibited within the operating frequency band. This behaviour is obtained by arraying one simple element in a single layer frequency selective surface (FSS)
Romeu, J., Rahmat-Samii, Y. Dual band fss with fractal elements. "Electronics Letters", Abril 1999, vol. 35, núm. 9, p. 702-703.