Date of Award

2026

Document Type

Open Access Master's Thesis

Degree Name

Master of Science in Electrical and Computer Engineering (MS)

Administrative Home Department

Department of Electrical and Computer Engineering

Advisor 1

Elena Semouchkina

Committee Member 1

Durdu Guney

Committee Member 2

Paul Bergstrom

Abstract

Electromagnetic invisibility cloaks guide waves around an object so that the transmitted wavefront remains undisturbed. Most experimental microwave cloaking studies have focused on transverse electric (TE) polarization due to established measurement techniques. In this thesis, the experimental realization and characterization of a dielectric photonic crystal cloak operating under transverse magnetic (TM) polarization are presented. A measurement system operating in the X-band was developed to map the electric field distribution of the transmitted waves. Cloaking performance was first evaluated qualitatively by comparing numerical and experimental field distributions, where restoration of a flat wavefront indicated effective cloaking. Quantitative evaluation was performed by experimentally determining the total scattering cross width (TSCW) of the cloaked object and observing its decrease near the cloak’s operating frequency. The results provide experimental validation of a photonic crystal cloak under TM polarization and demonstrate the feasibility of purely dielectric cloaking structures for microwave applications.

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