Date of Award
December 2024
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Electrical Engineering
First Advisor
Ryan Adams
Abstract
This thesis demonstrates the development of a flat metamaterial lens intended to enhance antenna directivity in RF applications. Development and evaluation was performed with ANSYS HFSS, where a theoretical convex lens model was developed and used as a basis for unit cell refractive indices of the metamaterial lens. The unit cell demonstrated in this study leverages the properties of a nested split-ring resonator merged with a center column. Adjusting the rings allow for refractive index optimization and effective beam focusing. The work presented also provides a 2x2 antenna array with a feed network, which enables the future work of bench testing the lens as a system. The array also demonstrates lens performance in a high-directivity source application. Key findings support a directivity improvement of a single patch antenna from 4.44dB to 7.73dB. This thesis emphasizes the lens’s minimalist and application-friendly solution to traditional low-directivity limitations.
Recommended Citation
Midas, Tyler, "Directivity Improvement Of A Broad-Beam Patch Antenna By Means Of A Flat Metamaterial Lens" (2024). Theses and Dissertations. 6548.
https://commons.und.edu/theses/6548