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Analysis of a modified Sierpinski gasket monopole antenna printed on dual band wireless devices

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4 Author(s)
Tsachtsiris, G.F. ; Dept. of Electr. & Comput. Eng., Univ. of Patras, Greece ; Soras, C.F. ; Karaboikis, M.P. ; Makios, V.T.

The traditional Sierpinski gasket monopole antenna is well known for its multiband behavior, but it cannot be printed on the circuit board of a portable wireless device due to the limited space availability. In this paper a modified Sierpinski gasket monopole antenna is presented that possesses a small physical size, high efficiency and the ability to allocate both the 2.4 and 5.2 GHz Industrial Scientific and Medical bands without the need of a matching network. The modified element respects the multiband behavior of the gasket since the input impedance characteristics of the upper bands maintain their symmetry. Several modification techniques are proposed making the monopole very flexible in terms of band allocation and fine-tuning. The dimensions of the ground plane are also proven to play a significant role on the operational bandwidth of the antenna system.

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Antennas and Propagation, IEEE Transactions on  (Volume:52 ,  Issue: 10 )