Directive beam metamaterial inspired transparent folded dipole antenna for millimeter wave applications

Abstract

A directive beam compact transparent antenna patch with a circular ring resonator using metamaterial design is presented. The structure consists of a planar folded dipole antenna and the circular ring resonator on the bottom side of the glass substrate, which has a dielectric constant (ϵr) of 5.6 and a thickness of 0.7 mm, with Indium Tin Oxide (ITO) materials in the patch as the cell unit, which has a thickness of 185 nm. This presented a design simulation for the antenna at mm-wave communication system 28 GHz, which has a bandwidth from 25.31 GHz to 31.92 GHz. In this paper, several simulation sections are executed, including simulations on the planar folded dipole antenna at the top of the substrate, the circular ring resonator at the bottom of the substrate, and the combined two designs. Each of these is carried out to determine the effect obtained so that it can be analyzed. Metamaterial structure is used in the antenna patch for bandwidth, gain, and resonator size reduction. In this design simulation, the effect of the unit cell on the bottom side of the glass substrate with an ITO resonator will be analyzed. The simulation and design have a response S11 at 28 GHz of -25.84 db.