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All-metal 3-D Frequency Selective Surface with Versatile Dual-Band Polarization Conversion

Abstract : A dual-band periodic structure is here proposed, which allows for versatile frequency selectivity and polarization conversion functionality. The structure is a monolithic full-metal piece, and it is built from the arrangement of unit-cells consisting of waveguide sections at cutoff loaded with compound perforations. The topology of such unit-cells enables the efficient and independent interaction with vertical and horizontal electric field components illuminating the periodic structure. A circuit model is proposed to characterize the cells and understand their behaviour. Three different examples of cells are designed to illustrate the structure versatile functionality. One of these examples is manufactured, consisting of a dual-band structure that converts linear polarization into circular with orthogonal senses of rotation at each band. The experimental results are in good agreement with the theoretical predictions, thus validating the underlying operation mechanism and its practical feasibility.
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Submitted on : Wednesday, June 17, 2020 - 2:19:52 PM
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Molero et al-2020-All-metal 3-...
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Carlos Molero, Esteban Menargues, M. García-Vigueras. All-metal 3-D Frequency Selective Surface with Versatile Dual-Band Polarization Conversion. IEEE Transactions on Antennas and Propagation, 2020, 68 (7), pp.5431-5441. ⟨10.1109/TAP.2020.2975270⟩. ⟨hal-02871997⟩



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