Compact Band-Notched Printed Monopole Antenna For Ultrawideband Communication

A compact wideband printed monopole antenna with band notch characteristics is proposed and investigated. Introducing a two corner notches at the lower edges of radiating patch and notch in destructive ground surface (DGS) increased bandwidth from 3-11GHz. By inserting an inverted U-slot in the radiating plane 3.3-4.2GHz (Wi-Max and C-band satellite communication) band notch characteristics is obtained. Systematic parametric studies have been conducted by changing gap distance between radiating patch & defective ground surface (DGS), length and width of inverted U-notch. Antenna is simulated using CAD FEKO suite (6.2) using method of moment. A prototype of antenna is fabricated using a FR4 dielectric substrate with a dielectric constant of 4.4 and loss tangent of 0.02 having dimensions of 11 mm x 15 mm x 1.59 mm. Radiation pattern shows directional pattern along E-plane and nearly omnidirectional pattern along H-plane. Simulated and measured results of the proposed antenna are presented.