Compact integrated designs of microwave filters and antennas with dual-polarization

Abstract

Microwave antenna and filter circuits are key components in all types of communication systems. In order to achieve high compactness and high performance for next generation wireless networks, this thesis investigates the use of a material with a high dielectric constant (approximately 20) and low loss for integrated design of microwave filters and antennas. Two different filtering antenna designs in the 3.5 – 3.7 GHz frequency range are presented. A dual-mode waveguide filter is used in both designs, while a microstrip antenna is used for one design and a dielectric resonator antenna (DRA) is used for the other. Microstrip antenna and DRA are used due to their low-profile, ease of fabrication and light weight. The integrated designs are validated using full wave electromagnetic (EM) simulations, showing comparable performances. Both designs are compact, low loss, and have dual-polarization with good isolation, making them ideal for 5G mobile communication applications.