Skip to Main Content
 

Global Search Box

 
 
 
 

ETD Abstract Container

Abstract Header

Metamaterials: 3-D Homogenization and Dynamic Beam Steering

Hossain, A N M Shahriyar

Abstract Details

2019, Master of Science in Engineering, University of Akron, Electrical Engineering.
The first objective of this thesis is to explore an accurate two-scale homogenization technique of periodic electromagnetic structures or metamaterials having any number of dimensions. The fine-scale fields are approximated with a suitable set of basis functions in a unit cell. The coarse-grained field amplitudes are calculated as the boundary averages of the fine-scale fields. The effective material tensor is obtained in the least-squares sense. The proposed method accurately predicts the scattering parameters of a periodic layered medium, and of a 3-D plasmonic medium with any reasonable size and composition of the unit cell. A novel Bloch wave extraction procedure has been implemented for the 3-D case. A trade-off between the accuracy and the range of applicability of the effective material tensor has been discussed. In addition, metamaterials with resonating elements have been applied to dynamic beam steering. The resonators act as micro- or nano-antennas fed by a tunable metamaterial guide or metasurface. The novelty lies in the absence of any individual tuning circuitry for each resonator. Rather, a global control is effected by tuning the permittivity of the host material, or alternatively, by a multiguides concept. Optimized radiation profiles, and beam-scanning controlled in a dynamic fashion have been demonstrated.
Igor Tsukerman (Advisor)
Nathan Ida (Committee Member)
Nghi Tran (Committee Member)
97 p.

Recommended Citations

Citations

  • Hossain, A. N. M. S. (2019). Metamaterials: 3-D Homogenization and Dynamic Beam Steering [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1574430585435814

    APA Style (7th edition)

  • Hossain, A N M Shahriyar. Metamaterials: 3-D Homogenization and Dynamic Beam Steering. 2019. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1574430585435814.

    MLA Style (8th edition)

  • Hossain, A N M Shahriyar. "Metamaterials: 3-D Homogenization and Dynamic Beam Steering." Master's thesis, University of Akron, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1574430585435814

    Chicago Manual of Style (17th edition)