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The investigation of flnite ground coplanar fed ultra- wideband (UWB) antenna and the in∞uence of its curvature and the proximity of circular metallic screen on the re∞ection coe-cients and radiation characteristics is presented. The antenna is composed of two circular coplanar strips which enclose slot aperture of similar shape and is designed on a thin and ∞exible substrate which allows its bending. The antenna conflguration has been modeled and experimentally tested, showing good performance in 2{15GHz frequency with return losses less than i10dB. It is shown that the bending of antenna does not signiflcantly afiect its performance. The existence of metalic screen deteriorates its radiation pattern and re∞ection coe-cient, however with the correct choice of the distance between screen and antenna the required level of return losses can be provided.

FINITE GROUND CPW-FED UWB ANTENNA OVER THE METALLIC CYLINDRICAL SURFACES