Simulation Research of a Novel Multi-band Fractal Triangle Antenna

This paper proposes a novel multi-band fractal triangle antenna which develops from the Sierpinski gasket antenna. The antenna consists of nesting triangles with different heights and degrees of the apex angle. Simulated on the commercial software CST MICROWAVE STUDIO^reg, the antenna shows multi-band characteristic. Three parameters (height of the triangle, apex angular degree of the triangle and the nesting number) are proved to influence the central frequency of the pass bands. Summarized from the impact of these parameters, antenna with three passbands 900 MHz, 1.8 GHz, 2.4 GHz are designed adjusting these parameters. Furthermore, in order to remove the infinite conductive ground, the symmetrical antenna is discussed and the simulation results indicate that the antennas also have three pass bands with the same central frequencies as well as UWB characteristic in the high frequency range. Thus, the multi-band fractal triangle antenna is a novel antenna with controllable frequency bands and promising application.