Miniaturization of printed monopole antenna through fractal geometry and partial cutting methods for UHF application

This paper reports an investigation on a combination of fractal geometry and half cutting methods in designing a printed monopole antenna for low frequency application. The effects of the combination of fractal shape and partial cutting methods to the printed monopole antenna performances were studied. All designs operate at the Ultra High Frequency (UHF) band. The fractal geometry was proposed in order to shift down the resonant frequency while partial cutting method helps to a further reduction of the overall size of the antenna. Based on the results, it was found that the overall size of the proposed antenna is 53.68 % smaller than the conventional printed monopole antenna at the same resonant frequency. The monopole antenna size is 70.89 × 135.82 × 1.67 mm³. It has gain of 2.72 dBi with omnidirectional radiation pattern.