Design of Full-Metal Polarizing Screen Based on Circuit Modeling

Abstract : A polarizing sheet based on a fully metallic structure is here reported for the first time. The polarizer consists of a doubly-periodic arrangement of squared-waveguide sections enclosed by two perforated screens. Though the waveguide sections are highly reactive (operating below cutoff), the perforations placed at both sides of the unit-cell allow for total transmission at a certain frequency band. Within this band, the unit-cell allows additionally to tune its anisotropy in order to transform the linear polarization of an impinging 45° -slant plane wave into circular. An equivalent circuit model of this structure is proposed that reproduces its full-wave scattering properties and explains its principle of operation. A design is performed operating around 20 GHz showing good performance. © 2018 IEEE.
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Submitted on : Tuesday, September 25, 2018 - 1:58:58 PM
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C. Molero, T. Debogovic, M. García-Vigueras. Design of Full-Metal Polarizing Screen Based on Circuit Modeling. 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018, Jun 2018, Philadelphia, United States. pp.23-26, ⟨10.1109/MWSYM.2018.8439694⟩. ⟨hal-01881030⟩

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