5G Antenna Design using SIW Technique

Abstract

Owing to exponential growth in mobile communication and the requirement of intercon necting multiple wireless devices, high data rates, low latency and large bandwidth are the basic requirements. To serve this purpose, new communication standard i.e. 5G is in its development phase. In next phase of 5G, millimeter waves are used for communi cation due to their advantages such as higher capacity, large bandwidths, high density of devices, extreme base stations, ultra-reliable device-to-device and machine-to-machine communications. However,due to shorter wavelengths in millimeter wave region, radiated RF energy face high attenuation rates. To overcome this problem, high gain and narrow beam antennas are required for seamless communication. For narrow beamwidth, array configurations of individual radiating elements with dedicated feed or an array of multiple slots are reported in the literature. Multiple technologies are used in published designs such as Leaky Wave Antennas, Planar Antennas, SIW Slot Antennas etc. Among these antennas, SIW technology due to its simpler structure and easy integration possibility with planar circuits, is used in the thesis to design a directive antenna at 28 GHz band. In this thesis, the antenna is based on a single-layer SIW slot array fed by microstrip to SIW feed transition. The designed prototype has a footprint of 21 × 28mm2 on a 0.254 mm thick substrate with a unidirectional beam having a gain of 14 dBi and a narrow beam in both E and H planes. The antenna exhibits -10dB impedance bandwidth of 3 GHz (27.3-30.3 GHz).