Date of Award

2026

Document Type

Open Access Dissertation

Degree Name

Doctor of Philosophy in Electrical Engineering (PhD)

Administrative Home Department

Department of Electrical and Computer Engineering

Advisor 1

Jin W. Choi

Committee Member 1

Anthony J. Pinar

Committee Member 2

Tan Chen

Committee Member 3

William Morell

Abstract

This research introduces antenna-based sensors for dielectric characterization aimed at overcoming the limitations of conventional microwave sensors. Although traditional microwave sensors are widely used for their noncontact operation, high sensitivity, and ability to penetrate various materials, they often face challenges such as large size and high-power consumption. To address these issues, antenna-based sensors are explored for their compactness, ease of fabrication, and flexible design adaptability across diverse sensing applications. An in-depth analysis of multiple antenna sensor configurations is conducted, followed by the design and development of high-performance sensing structures. A saw-tooth slot antenna sensor is developed for highly sensitive liquid and chemical characterization. Additionally, symmetrically and asymmetrically arranged Yagi–Uda antenna pairs are investigated for enhanced sensitivity to variations in material permittivity, analyzed through changes in transmission coefficients. Furthermore, a highly responsive electromagnetic band gap (EBG) antenna sensor is proposed for precise liquid characterization. Collectively, the proposed designs demonstrate strong potential for advanced dielectric sensing in biological, chemical, and environmental domains.

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Download

Share

COinS