A circular monopole antenna for bandwidth enhancement using cylinder slots with triple band notch characteristics

Abstract

This article introduces a super wideband along with three notch bands circular patch monopole antenna. The design structure is applicable for microwave and high-speed wireless devices (2.19 to 25 GHz). In order to create a broad band, a ring dimension circular patch is used. To generate three notch bands, six symmetrical tiny cylinder stubs are introduced on the ground. These notch band frequencies can eliminate unwanted interference from various wireless frequencies, which mainly cover three notch bands: 5. 5-7.3, 12.05-14.46, and 17.71-19.5 GHz. The steady radiation, super bandwidth, and stable gain properties expand when the ring patch and line feed are combined. It is excellent for many UWB applications because of its compact size (39 Â 29 mm 2 ) and large bandwidth (166.97% fractional bandwidth). This model employs various size reduction and matching approaches to get a better response. The mechanisms of these structures are identified, and overall performance is compared with parametric analysis, tables, and figure. K E Y W O R D S circular patch, cylinder slot, monopol, notch band, super wideband 1 | INTRODUCTION Small antennas with low profile, multiband, or wideband features are used to meet the demands of current wireless communication systems. Most modern wireless communication systems were advanced quickly over the past 20 years.The ultrawideband spectrum with a bandwidth of 3.1 to 10.6 GHz was assigned by the US Federal Communication Commission (FCC) in 2002 for use of commercial UWB communication systems. 1 Because of an inexpensive cost, reduced complexity, and greater data transfer rate, UWB technology has gained popularity since it was the first commercialized system. As UWB communication systems continue to expand, printed antenna design 2,3 methods have revolutionized to fulfill the fundamental needs of UWB applications. There are so many wireless communication system with a limited band, including WLAN, WiMAX, and HIPERLAN/2, and the IEEE 802.11a band was also used. 4,5 But due to significant issues with electromagnetic interference, planned antennas are used for lesser bandwidth applications.To eliminate this interference with other nearby narrow bands, filters can be incorporated. The UWB system will become more sophisticated as a result, which will raise the price. An aerial with intrinsic band-notched performance is described in the literature. [6][7][8][9][10][11] Many researchers have put forth different strategies for UWB aerial design with bandnotch features to reduce interference, but the disclosed antennas are stiff planar kinds, and these cannot be installed on curved terminals. Therefore, antennas offer low mass density and small volume, so the researchers have concentrated