Extremely compact UWB antenna design with single Notch-Band characteristic

Abstract

An extremely compact antenna design for Ultra-wideband (UWB) application has been presented in this paper that successfully displays band-notch characteristics at the WLAN band. The design consists of a truncated radiator supplied by a 50 Ω Coplanar Waveguide (CPW) feedline structure. The antenna has been mounted on a FR4 substrate, and its ground plane has been etched with an inverted-L slot responsible for frequency-notch characteristics at the WLAN band (5.15-5.825 GHz). The ground plane has been defected by engraving a rectangular slot in the ground plane for improving the impedance bandwidth. The antenna has a profile size of 19×9×1.6 mm3. The performance of the antenna has also been compared with another design having twice the dimensions of the proposed structure (30×26×1.6 mm3).