A novel fractal microstrip PBG structure

A novel fractal microstrip PBG structure is proposed. It is realized by replacing the etched rectangular holes in a ground plane with a Sierpinski carpet. A dual-stopband characteristic not related to harmonics is observed. Different numbers of iterations of Sierpinski carpet are studied experimentally. © 2002 John Wiley & Sons, Inc. Microwave Opt Technol Lett 32: 136–138, 2002.