A New Miniaturized E-shaped Printed Monopole Antenna for UWB Applications

In this paper, a compact UWB printed monopole antenna design is proposed. The monopole antenna has the form of an E-shaped structure printed on a substrate with relative dielectric constant of 3.38, and thickness of 1.52mm. The matching through the UWB response is satisfied using a reduced ground plane. The proposed antenna is fed by a 50 Ω unsymmetrical microstrip line. The ground plane is printed beneath the microstrip line. Modeling and performance evaluation of the proposed antenna have been carried out using the commercially available electromagnetic simulator, IE3D from Zeland Software Inc. A parametric study is performed to show the effects of the different antenna parameters on the overall antenna performance. The performance of the antenna is mainly affected by geometrical and electrical parameters, such as the width and length of the branches of the E-shape structure, feed gap as well as the ground plane. Simulation results show that the proposed antenna possesses an operating bandwidth, for return loss ≤ −10 dB, extending from approximately 2.93 GHz to about 14GHz which covers the entire UWB band of 3.1 GHz to 10.6 GHz.