Compact UWB antenna with T-Shaped Slots and Staircase Ground Plane for Enhanced Bandwidth

Abstract

In the coming years, there is great demand for high-speed data transmissions on cost effective basis. In order to achieve the same a new technology known as the Ultra WideBand (UWB) has been used. This technology has revolutionary advantages of an unlicensed service that can be used anywhere, anytime, by anyone. UWB is well known technology for its use in communications and radar applications, unlike traditional systems; this can only operate over a specific range of frequencies. UWB devices operate by employing a series of very short electrical pulses that result in very wideband transmission bandwidths. In addition, UWB signals can run at high speed and low input power. Hence, there is a need to implement characteristics while designing small antennas. The purpose of this work is to propose an inexpensive, light-weight, compact and portable new type ultra-wideband antenna for pulsed applications. The general approach to this design is to feed the antenna by a 50 ohm Sub Miniature A (SMA) cable through a micro strip line. Firstly the model is simulated using AnsoftHigh Frequency Structure Simulation(HFSS) software. This Ansoft HFSS software is mainly used for antenna analysis and design. The software is based on The Method of Moments (MoM) algorithm and therefore quantitative results can be obtained. In an attempt to achieve the best overall performance, experimental simulation results are continually assessed using different parameters so as to get the best results. This was followed by constructing the prototype. The final prototype fabricated showed comparable results of the simulation.