A novel compact ultra-wideband (UWB) printed monopole loaded with a dielectric resonator (DR) antenna is proposed. The antenna consists of a microstrip fed monopole printed on a substrate with a truncated ground plane loaded with a DR. The bandwidth is enhanced by making an inner groove inside the DR and controlling the slot width of the truncated ground.

Introduction: Since the Federal Communications Commission (FCC) announced the use of the ultra-wideband (UWB) range, ie 3.1–10.6 GHz for commercial purposes, both academic and industrial research into UWB technology has dramatically increased. Two important techniques for antenna engineering design are bandwidth enhancement along with antenna miniaturisation. Recently, many researchers have proposed different techniques to design compact size antennas along with wide-bandwidth performance for several applications. The dielectric resonator antenna (DRA) is considered as an efficient solution to achieve both size reduction and bandwidth enhancement. DRAs have shown several unique characteristics rather than conventional metallic antennas such as high radiation efficiency, low dissipation loss, small size, light weight, and low profile [1–4]. In addition, DRAs have more degrees of freedom in terms of design flexibility than the conventional antennas, which allows them to become perfect candidates for high-efficiency, wideband and cost-effective wireless applications. In this Letter, a and compact hybrid printed monopole loaded with a DR for UWB applications is proposed. The proposed antenna consists of a microstrip fed monopole printed on RT5880 substrate with a finite truncated ground plane on the upper side of the substrate. The monopole is then loaded with a DR with a quarter elliptical cylinder of Rogers RO3010. Details of the proposed antenna are described and studied in the following Sections. side view