A Small Dual Band (28/38ghz) Elliptical Antenna For 5g Applications With Dgs

摘要

In this paper, a compact elliptical dual band microstrip antenna fed with a coplanar waveguide is presented. The proposed antenna isdesigned and analyzed using a 3-D full-wave electromagnetic software named, High Frequency Structure Simulator (HFSS) software based on finiteelement method (FEM). The design adopts a bi-layer substrate configuration where the elliptical radiating patch is printed on a Rogers RO3010substrate of dimensions 2.265x2x0.75mm3, with a dielectric constant of 10.2 and loss tangent of 0.0035 on which the radiating patch occupies a surfacearea of 0.754mm2. The antenna operates at 28GHz and 38GHz, two of the selected bands allocated to 5G by International Telecommunications Union.The simulation results show that the antenna achieves a minimum wide bandwidth of 4.14GHz and a constant gain of 6dB over the operation frequencyrange. As a miniaturized antenna, its electric characteristics(impedance, bandwidth, radiation efficiency and gain) along with the antenna’s size havebeen chosen as comparison parameters with those found in recent research works.In addition, previous electric parameters, together with the return lossand VSWR have been selected for the proposed Elliptical antenna that have been improved by inserting two F-shaped slots in the ground plane. Theseslots in the ground plane are well-known as defected ground structure (DGS) technique.