Date of Award
2020
Publisher
North Dakota State University
Document Type
Thesis
Degree Awarded
Master of Science (MS)
Department
Electrical and Computer Engineering
College
Engineering
Faculty Advisor
Braaten, Benjamin
Description
In the field of electromagnetism, there are materials known as metamaterials which exhibit unique properties that can be exploited. Permittivity, defined as capacitance per meter, of a metamaterial can vary over frequency , time, or even be negative. This can be useful for tuning antennas, changing their operating frequency or direction of propagation, or even designing cloaking systems. However, the theory behind metamaterials needs to be studied further. One of the biggest issues to address is in determining the constitutive parameters of metamaterials which may be varying. Previous research has shown the issue of branches, or mathematical discontinuities, occurring in the derivation of permittivity from the scattering parameters of a metamaterial. This thesis provides further understanding to the theory behind these branches and presents a new method to compensate for them. This new method, called the phase tracking method, may be considered a modern adaptation of the Nicolson-Ross-Weir method.
Recommended Citation
Lewis, Jacob Christian, "Extraction of Electromagnetic Properties of Metamaterials with Branch Compensation from Phase Tracking" (2020). Electrical and Computer Engineering. 46.
https://digitalcommons.ndsu.edu/elec-comp-eng/46
Rights
NDSU policy 190.6.2
Rights Link
https://www.ndsu.edu/fileadmin/policy/190.pdf
Author ORCID Identifier
0000-0002-7247-5748
Handle Identifier
https://hdl.handle.net/10365/31848