Application of equivalent medium parameters in finite element models of microwave metamaterials
MetadataShow full item record
Simulated or experimentally measured reflection and transmission are used to obtain effective permittivity (e), permeability (l), and conductivity (r) for a planar microwave metamaterial. These parameters are then used in a finite element model of macro-scale metamaterial objects, where the metamaterial is taken to be a homogeneous layer with frequency-dependent e, l, and r. We demonstrate good agreement between reflection and absorption of metamaterial structure and those obtained from modeling homogenized, macro-scale metamaterials. We further demonstrate use of the method for geometrically scaled, oddly shaped macroscopic objects. This method significantly reduces computation requirements and enables modeling of metamaterial-made, large area objects without modeling their actual intricate metamaterial structure.
The article of record as published may be found at https://doi.org/10.1063/1.5008279
Showing items related by title, author, creator and subject.
Gonzalez, Hugo A., Jr. (Monterey, California: Naval Postgraduate School, 2016-06);The terahertz (THz) spectral range remains a relatively untapped portion of the electromagnetic spectrum. THz radiation's unique ability to penetrate non-metallic materials presents an exciting opportunity for many imaging ...
Stinson, Eric A. (Monterey, California: Naval Postgraduate School, 2015-12);The aim of this work is to develop a metamaterial absorber that can be incorporated into a terahertz (THz) imaging system with a 4.7 THz quantum cascade laser (QCL) illumination source. Finite element (FE) simulations were ...
Hewitt, Chester H., III (Monterey, California: Naval Postgraduate School, 2017-06);Since the dawn of warfare, arms and armor have been locked in a never-ending struggle fordominance. A new development in that struggle is the advent of high-power microwave (HPM) directed-energy weapons (DEWs), which can ...