A shared aperture dual-band/-polarized dielectric resonator antenna for 5G/6G applications

• Main Author: Yu, Junrui
• Other Authors: Arokiaswami Alphones
• Format: Thesis-Master by Coursework
• Language: English
• Published: Nanyang Technological University 2025
• Subjects: Engineering
• Online Access: https://hdl.handle.net/10356/182393
• Institution: Nanyang Technological University

This dissertation presents an innovative design for a shared aperture dual-band, dual-polarized dielectric resonator antenna (DRA) targeting advanced 5G and 6G millimeter-wave (mmWave) applications. The proposed design addresses the growing demand for compact and efficient antennas capable of operating across multiple bands with polarization diversity, essential for high-capacity, next-generation wireless communication systems. Initially, a dual-band hybrid DRA is introduced, incorporating strip, slot, and dielectric resonator elements to achieve operation in the 28 GHz and 38 GHz bands. By leveraging different resonant mechanisms, this antenna structure achieves a wide bandwidth, covering the necessary frequencies for 5G mmWave applications. Subsequently, the study explores an alternative feeding method using an L-probe to realize a dual-band, dual-polarized DRA with enhanced performance characteristics. This second configuration extends the antenna’s capabilities by providing stable dual-band functionality and dual polarization, thereby meeting the rigorous demands of base station arrays. To support these designs, foundational antenna theories and parameters are discussed, alongside a review of recent advances in DRA technology. The study also highlights the necessity of shape innovation in DRAs and evaluates various feed strategies to optimize performance. The proposed designs provide versatile and high-performance solutions, paving the way for efficient, broadband mmWave communication systems suitable for future 5G and 6G applications.