Modified Sierpinski and its use in Fractal Patch Antenna for Miniaturization and Multiband Behavior

The characteristics like self-similarity and space filling are the unique properties of Fractal geometries. The geometries associated with fractal designs have been exploited, by the researchers for designing an antenna to have the mentioned properties. The article proposes a modified Sierpinski fractal design to give better miniaturization as equated to the conventional Sierpinski geometry. The advised design miniaturizes the triangular patch antenna by more than 50%. The two geometries are compared for a microstrip patch antenna. The comparison is done for the planar antenna on Roggers RO4003 lossy substrate with permittivity of 4.3 and the fractalization has been done up to fourth iteration. The calculations and simulations of S11(dB) and radiation pattern have been completed and mentioned in this communication.