In this paper, the microstrip patch antenna applying the koch island fractal geometry is introduced in order to reduce the antenna patch size. By space-filling property of fractal geometry, the microstrip patch applying koch island has low frequency c...
In this paper, the microstrip patch antenna applying the koch island fractal geometry is introduced in order to reduce the antenna patch size. By space-filling property of fractal geometry, the microstrip patch applying koch island has low frequency compared with square patch antenna. In the case of 1st order iteration patchs are investigated by simulator and experiment. Through this, it is found that as the fractal iteration factor increase, the resonant frequency of koch island patch is lower. therefore koch island patch antenna can reduce patch size compared with square patch antenna. and The fabricated patch antenna is matched by using quarter wave length impedance transformer and return loss and radiation patterns are measured. The measurement result shows that the copolarization pattern of koch patch is similar to that of square patch. The cross polarization power level is -15∼-20dB.