MIMO Quasi-Yagi-Uda antennas for 5G wireless communication applications

• Main Author: Sundarrajan Ishwarya
• Other Authors: Zhang Yue Ping
• Format: Final Year Project
• Language: English
• Published: Nanyang Technological University 2021
• Subjects: Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/149355
• Institution: Nanyang Technological University

This paper reviews antenna theory and parameter calculations. Yagi-Uda antennas will be reviewed in order to gain understanding of its operation. However, A microstrip patch antenna at an operating frequency of 2.4GHz and various other parameters was input into sonnet software to produce a design. The Main Scope of this Project will be the design and simulation of a QuasiYagi antenna operating at 28GHz band that will be designed using the Ansoft HFSS software, which simulates high frequency electromagnetic fields. The substrate, groundplane, microstrip line, excitation are some important factors to consider inorder to attain the desired frequency and magnitude. The antenna is made of FR4 substrate and a copper ground plane. A coax feed design with its inner conductor connected to microstrip line end is fitted into this antenna design. This paper also shows results like S11 parameters, 2D Radiation Pattern and 3D polar plot. The main aim would be to get the best possible radiation pattern, gain and S11 parameters to ensure maximum efficiency. Analysis of the quasi-Yagi antenna with respect to the length of the director, distance between director and driver, distance between the coupled microstrip lines, length of the driver and distance from the driver to the reflector, are done and multiple optimisations will be conducted to attain the best fit for the required conditions of an efficient antenna. For example, a gain of more than 3, and a magnitude of less than -10dB