Performance Enhancement of Metamaterial Inspired Millimeter-Wave Antenna Arrays for 5G Wireless Applications

Abstract

Fifth-generation (5G) wireless communication systems employ millimeter-wave (mm wave) frequency bands to achieve a very broad spectrum for high data rate transmis sion. To meet the requirements of the system, the design of antenna arrays with high capacitance and exibility are essential. Thus, in this thesis, the design and perfor mance analysis of single element, 2x1, 4x1, 2x2, 4x4, and 8x8 metamaterial inspired millimeter wave antenna (MIA) arrays are proposed. Rogers' 5880, a substrate mate rial with a 2.2 dielectric constant and a thickness of 0.35 mm, is used in the design of the antenna elements to operate at a 38 GHz central frequency. The simulated design of the single, 2x1, 4x1, 2x2, 4x4, and 8x8 MIA arrays bandwidth and total e ciencies (η%) are: 1.971 GHz, 2.278 GHz, 4.704 GHz, 2.51 GHz, 4.156 GHz, 5.44 GHz; and 95.55 %, 94.01 %, 95.87%, 95.58%, 93.21%, and 85.38% respectively. As compared to other works, improved performance has been achieved by considering the e ect of metamaterials on the radiator and at the ground of microstrip patch antennas (MPA). The selected type of metamaterials alters the current distribution of the radiating patch that enhances the fringing elds at the edge of MPAs, which inspires the radiation of antennas and reduces the surface wave loss at the radiators' ground plane. The pro posed MIA antenna arrays have improved on the drawbacks of traditional MPAs in terms of bandwidth, VSWR, and return losses to enhance the data rate and device to device communication for 5G wireless systems