4.7 Article

All-Metal 3-D Frequency-Selective Surface With Versatile Dual-Band Polarization Conversion

期刊

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 68, 期 7, 页码 5431-5441

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2020.2975270

关键词

Integrated circuit modeling; Equivalent circuits; Frequency selective surfaces; Dual band; Topology; Periodic structures; 3-D periodic structures; equivalent circuit; polarizers

资金

  1. Rennes Metropole [AIS 17C0481]
  2. Brittany Region [SAD 2016 9637]
  3. European Union through the European Regional Development Fund (ERDF)
  4. Ministry of Higher Education and Research, Brittany, through the CPER Project SOPHIE/STIC and Ondes
  5. Rennes Metropole, through the CPER Project SOPHIE/STIC and Ondes

向作者/读者索取更多资源

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 behavior. 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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