“…This can be achieved through using spiral stub with CPW feed as a new feeding system and total dimension of 28 × 21 mm 2 . Compared to fractal UWB antenna with dimensions of 39.6 mm × 43.5 mm [21], novel compact Ultra wideband antenna fed by CPW with total size of 29 mm × 32 mm [22], small compact T slots UWB antenna with dimension of 30 mm × 30 mm [23], modified elliptical antenna by bending edges and cutting metal sections [24] with total dimension of 90 mm × 65 mm, broadband slot antenna with a circular aperture excited with a planar dipole element with dimensions of 92.52 mm × 37.8 mm [25] and bell-shaped planar ultra wideband antenna with CPW feed line with dimensions of 86 mm × 77.9 mm [26], we could notice that, the proposed structure achieve both novelty and compactness. The proposed antenna in this paper is designed with a compact rectangular slot and a rectangular spiral feeding structure at the interior portion of the feed.…”