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The feasibility of using single-layered subwavelength rectangular patch elements for broadband folded reflectarrays is studied in this letter. The antenna is made of a feed horn, a planar lower reflector, and an upper polarizer. Different to existing folded reflectarray designs in the literature where a half- or near-half-wavelength unit cell is used for lower reflectors, this work employs subwavelength...
This paper presents a design of wideband folded reflectarray using single-layered sub-wavelength elements. Different to existing folded reflectarray designs where a half or near half wavelength unit cell is adopted for lower reflectors, this work uses rectangular patch elements arranged in a sub-wavelength grid on a single layer of substrate, in an effort to achieve wide bandwidth of folded reflectarrays...
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