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In this paper, a rectangular metallic monopole antenna with normal rectangular stubs is presented for application in ultra wideband communication systems. It is shown by computer simulations (HFSS and CST) and actual fabrication and measurement that the addition of protruding normal metallic stubs leads to the increase of impedance bandwidth. The optimum design of geometrical dimensions of the antenna (consisting of the monopole plate and stubs) achieves up to 10dB return loss in the UWB (3.1{10.6GHz) frequency range. The radiation e-ciency of antenna is better than 95%. Furthermore, the antenna provides linear polarization, with quite low cross-polarization levels.

DESIGN OF A RECTANGULAR METALLIC MONOPOLE ANTENNA WITH PROTRUDING NORMAL PLATES FOR APPLICATIONS IN UWB COMMUNICATION