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arXiv · 2012.05815

Systematic Design of Transmission-type Polarization Converters Comprising Multi-layered Anisotropic Metasurfaces

Filippo Costa·Michele Borgese
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Abstract

A simple but efficient approach for the synthesis of transmission-type wideband polarization converters is presented. The proposed configuration comprises multilayer metasurfaces including resonant particles which are progressively rotated layer by layer. The progressive rotation of the particles allows for a polarization conversion over a large frequency band. The polarizing structure is efficiently designed and optimized through a transmission line model approach handling the cascade of anisotropic impedance layers and dielectrics. An optimized 8-layers design based on gradually rotated dipole resonators is presented as a proof of concept. The results obtained through the efficient transmission line model are compared with full-wave simulations once that the structure was optimized showing satisfactory agreement. A prototype of the wideband polarization converter has been fabricated and measured.

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Filippo Costa, Michele Borgese. 2020-11-22. Systematic Design of Transmission-type Polarization Converters Comprising Multi-layered Anisotropic Metasurfaces. https://doi.org/10.1103/physrevapplied.14.034049

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