Modeling of planar Microwave sensor and optimized dielectric resonator antenna

Abstract

This thesis aims to model and optimize planar resonator structures, including antennas and filters utilizing advanced simulation tools such as HFSS, and ADS. The primary focus is on dielectric resonator antennas (DRAs), particularly the design of a simple, compact cylindrical dielectric resonator antenna (CDRA) based on MIMO technology for WLAN applications. Additionally, a highly sensitive and compact microwave sensor is presented, based on meta-materials complementary split-ring resonator (CSRR), designed to characterize liquid media in the microwave frequency range. A key aspect of this work is the development of equivalent circuit models, a topic that has recently gained significant interest in antenna design. Using ADS software, two effective equivalent circuit models were created: one for a sensor and another for a CDRA MIMO antenna. These models provide a deeper understanding of the behavior of this type of resonator, thereby enhancing the overall quality and performance of the designs.