Multiband Stepped Antenna for Wireless Communication Applications

Abstract

In this paper, a novel design of a coplanar waveguide fed (CPW) triple-band antenna is introduced. An ultra-wideband (UWB) characteristic is achieved by the initial design through the cut of a stepped shape from the lower part of the initial radiating patch and through the use of a truncated ground plan. To avoid the effects of the electromagnetic interferences with some coexisting wireless communication systems, a transition from the UWB to multiband function is assured by etching a simple circular ring inside the radiating patch. The antenna is printed on the low-cost FR4-substrate having a compact size of 0.162λ0×0.123λ0×0.008λ0 at 1.57 GHz. The design and the analysis of the antenna were done using the commercially software CST Microwave Studio TM while the fabricated prototype was tested and measured by using a R&S®ZNB Vector Network Analyzer. The measurements show that the fabricated prototype resonates between 1.57-2.33 GHz (38.97%), 5.84-6.41 GHz (9.31%), and 7.93-10.88 GHz (31.37%). Besides, the proposed antenna has consistent measured radiation pattern characteristics and it also reveals an acceptable realized gain and a high efficiency over the working ranges. Hence, the designed antenna can be a good candidate for many wireless communication systems.

Super UWB Grooved and Corrugated Antenna for GPR Application

“…8 indicates that the fabricated prototype operates in a super UWB extending from 1.95 GHz to upper than 20 GHz (>164.46 %) which is wider than the reserved UWB frequency band of 110 % (3.1-10.6 GHz). The simulated co-polar and [12,13]. Because of the extramodes at upper frequencies, it is observed that the magnitude of the cross-polar in the two planes augments with augmenting the frequency, also this augmentation can be attributed to the excitation of higher-order mode [14].…”