Micro strip patch antennas are very popular because of its significant feature such as, low profile planar configuration, light weight, low cost but gain of the antenna is very low, small directivity, similarly very low efficiency and very narrow bandwidth. To overcome this limitations, implementing patch antennas with defected ground plane structures or by introducing slots in the configurations and through increasing substrate thickness as well asthe height of the patch, then decreasing the permittivity of the substrate by the way the bandwidth of the antenna is improved. The designed antennas are fabricated on a high performance FR4 circuit board. To increase the bandwidth of the antenna and also to reduce the size of the antenna fractal structure can be introduced.
Key words: Antenna radiation pattern, Micro-stripPatch antenna, Fractal structure.
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