Abstract:A circularly polarized pyramidal horn antenna based on substrate integrated waveguide (SIW) technology is proposed and developed for Ku-band applications. The proposed horn antenna is excited by the upper and lower SICL differential feed networks placed vertically to each other, so that two orthogonal waveguide modes with the equal amplitude are generated at the horn aperture. A 90 coupling network based on SICL technology is proposed to achieve a 90 phase difference between the two orthogonal waveguide modes,… Show more
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