Analysis and design of Quasi-Yagi antenna array

• Main Author: Jia, Xiaoyan
• Other Authors: Zhang Yue Ping
• Format: Thesis-Master by Coursework
• Language: English
• Published: Nanyang Technological University 2024
• Subjects: Engineering; Quasi-Yagi antenna; Antenna array; HFSS simulation; Directive Radiation; Impedance matching; Gain; Optimization; Wireless communication
• Online Access: https://hdl.handle.net/10356/181866
• Institution: Nanyang Technological University

This dissertation aims at investigating the design and performance optimization of Quasi-Yagi antenna elements and Quasi-Yagi antenna arrays to assess the potential role of Quasi-Yagi antennas in modern wireless communication systems that require high directivity and bandwidth. The study begins with a theoretical overview of antenna principles and antenna parameter metrics, highlighting the advantages of Quasi-Yagi design, such as compactness and ease of integration with microstrip circuits. Using HFSS, simulations were conducted on the radiating and feeding sections of the Quasi-Yagi antenna, followed by full simulation of the complete Quasi-Yagi antenna element to evaluate key parameters like gain, impedance, and radiation pattern within the target frequency band. After successfully optimizing a single Quasi-Yagi antenna element, a linear array was developed, and similar performance analyses were performed. Results indicate that, the Quasi-Yagi antenna array shows significant improvements in radiation efficiency, directivity, and bandwidth, making it promising for applications in many different communication systems. This work contributes to the advancement of compact broadband antenna designs to meet the growing demands of high-frequency communication technologies.