Analysis of U-slot loaded truncated corner rectangular microstrip patch antenna for broadband operation

An analysis of broadband truncated corner rectangular microstrip patch antenna loaded with U-slot is presented using equivalent circuit approach based on cavity model. The U-slot and a pair of truncated corner are employed in a rectangular patch to achieve about 80.41% measured impedance bandwidth covering frequency range 2.58–6.05 GHz. It is found that impedance bandwidth highly depends on the truncated corners as well as slots dimensions. The other parameters of the proposed antenna are also studied and compared with the without U-slot truncated corner patch antenna. The maximum gain and efficiency of the proposed antenna are 9.78 dBi and 89.68%, respectively. The theoretical results are compared with simulated and measured results and found in good agreement.