Printed Monopole Antenna for Ultrawideband Application with Tunable Quad Band-Notched Characteristics

In this paper, a compact Ultra-Wideband (UWB) microstrip-fed printed monopole antenna with quad bandnotched characteristics is proposed. The proposed design consists of a radiating patch with two bevels at the bottom edge and the modified ground plane with two bevels of its upper edge to obtain the wideband from 3.1 to 10.6 GHz for UWB application. Additionally, a triangular cut is introduced at the upper edge of the ground plane for improving the impedance matching beyond 6 GHz. The band notch at 3.4 GHz is achieved with a pair of slots along patch length and placed symmetrically on both the sides of the patch whereas notch band at 5.2 GHz is achieved using circular shaped complementary split ring resonator (CSRR) on the patch. The third notch frequency at 5.8 GHz is also achieved by using a pair of rectangular shaped CSRR on the ground plane. The fourth notch frequency is obtained by meander line (ML) at both the sides of the feed line.