I. Fractal Antenna Designs&measurements
In this work, a single fractal antenna is used in conjunction with switches as a basis of a new re-configurable multiband antenna. The switches permit controlled connectivity of the antenna s metal parts, allowing enhanced multifrequency operation with one antenna. The use of fractal shapes provides multiband characteristics through the property of self-similarity at equal physical scales. The EM performance of the switches is considered ideal. Simulated and measured results are presented. Most fractal antennas have been studied extensively over the last few years [1]–[3]. A modified Sierpinski Gasket antenna shown in Fig, 1, first studied in [4], was chosen for the purpose of this paper. When switches are OFF, the antenna is broadband (1.26–2.68GHz) and with a radiation pattern similar to that of the printed dipole. Small gaps are then created in the etched fractal antenna, which are bridged by 2×1mm copper strips. The presence of the switches has minimal effect on the antenna.