Wideband circularly-polarized gap waveguide-based antenna design
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- AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CPP2021-008757/ES/
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This paper presents the design of an all-metal antenna based on Gap Waveguide technology. The antenna, which is realized using a Ridge Gap Waveguide, consists of just two layers, maintaining a compact size. The first layer is made up of two perpendicularly placed arms, which comprise the feeding, and the second layer hosts a diamond shaped slot and a horn, which comprise the radiator. Simulations show that the design achieves a remarkable bandwidth equivalent to the 31.43% of the central frequency in terms of both S11 parameter, being below -10 dB, and Axial Ratio, being below 3 dB.
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