Modeling the Performance Impact of Anisotropic Unit Cells Used in Additively Manufactured Luneburg Lenses

Additively manufactured graded index lenses, such as the Luneburg lens, often result in some degree of uniaxial anisotropy in the effective permittivity distribution. A uniaxially anisotropic Luneburg lens modifies the polarization state of an incident electromagnetic field, thus giving rise to a po...

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Bibliographic Details
Published inApplied Computational Electromagnetics Society journal Vol. 37; no. 1; p. 50
Main Authors LaRocca, Brian, Mirotznik, Mark
Format Journal Article
LanguageEnglish
Published Pisa River Publishers 01.01.2022
Subjects
3-D printers
Additive manufacturing
Anisotropy
Antennas
Design
Electromagnetic fields
Finite element method
Lenses
Partial differential equations
Polarization
Polymers
Simulation
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Summary:Additively manufactured graded index lenses, such as the Luneburg lens, often result in some degree of uniaxial anisotropy in the effective permittivity distribution. A uniaxially anisotropic Luneburg lens modifies the polarization state of an incident electromagnetic field, thus giving rise to a polarization mismatch at the receiving antenna. Using 3D finite element simulation, the lens focal point polarization is analyzed and a model that fits the simulation data is created. The model allows prediction of polarization mismatch loss given any incident field and any receiving antenna polarization without resorting to further time-consumingsimulations.
ISSN:1054-4887
1943-5711
DOI:10.13052/2022.ACES.J.370106