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Homogenization of P...
Homogenization of Periodic Structures Using the Multimodal Transfer Matrix Method
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- Escobar, Ana C. (författare)
- Universidad Nacional de Colombia, Department of Physics, Bogota, Colombia
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- Mesa, Francisco (författare)
- Universidad de Sevilla, E.T.S. de Ingeniería Informática, Departamento de Física Aplicada 1, Seville, Spain
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- Quevedo-Teruel, Oscar (författare)
- KTH,Elektroteknisk teori och konstruktion
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- Baena, Juan D. (författare)
- Universidad Nacional de Colombia, Department of Physics, Bogota, Colombia
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Universidad Nacional de Colombia, Department of Physics, Bogota, Colombia Universidad de Sevilla, ET.S. de Ingeniería Informática, Departamento de Física Aplicada 1, Seville, Spain (creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2023
- 2023
- Engelska.
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Ingår i: IEEE Transactions on Antennas and Propagation. - : Institute of Electrical and Electronics Engineers (IEEE). - 0018-926X .- 1558-2221. ; 71:6, s. 4976-4989
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This work presents a method for obtaining the constitutive parameters of periodic structures from the computation of their dispersion relation and average fields. The method uses the scattering parameters (S-parameters) of multiple Bloch modes of a single unit cell. The corresponding multimodal scattering matrix is obtained with a suitable general-purpose electromagnetic software. Further post-processing of this scattering matrix is then carried out, which allows for the computation of the dispersion relation of structures with realistic finite conductivity or made of lossy dielectrics, as well as the calculation of the attenuation constant and the retrieval of the impedance, permittivity, and permeability. The proposed method is applied to homogenize some systems of interest: an artificial electric plasma built with wires, a free-space matched left-handed metamaterial based on two laterally shifted split ring resonators, a high-permittivity artificial dielectric based on densely arranged square metal patches, and a μ -near-zero metamaterial made of metallic cubes embedded in a dielectric. The retrieved material parameters are found to accurately describe the scattering of finite samples of the corresponding homogenized structures. This research is limited to orthorhombic unit cells smaller than half the free-space wavelength to avoid diffracted beams. Besides, since only one propagation direction is considered, only the transverse components of constitutive parameters are retrieved.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- Electromagnetic propagation in absorbing media
- electromagnetic propagation in dispersive media
- periodic structures
- permeability
- permittivity
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- ref (ämneskategori)
- art (ämneskategori)
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