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Design of a printed monopole antenna with ridged ground for Ultra Wideband applications

This paper presents a printed monopole antenna for Ultra-Wideband (UWB) communication. The designed antenna consists of a circular disc radiator and a partial ridged ground plane. The proposed antenna has overall dimensions of 38mm × 38mm × 1.6 mm. The printed monopole antenna has been realized by using the FR-4 printed circuit board substrate. The permittivity of the substrate is 4.6 and loss tangent is 0.02. The proposed antenna is simulated using Agilent Advance Design System (ADS). Simulated result show that the antenna operates in entire UWB region: from 2.9 GHz to 10.7 GHz, with reflection coefficient S11 less than -10 dB over the entire band. It achieves an impedance bandwidth of 7.2 GHz. Simulated E-plane and H-plane radiation patterns are stable for the entire UWB frequency range. These characteristics make the proposed antenna suitable for different UWB applications.