A low‐profile circularly polarized cavity‐based waveguide aperture antenna
Rashad H. Mahmud,
Mustafa M. Mohammed,
Raad S. Jarjees
et al.
Abstract:This article proposes a new design of a circularly polarized (CP) aperture antenna based on a dual‐mode rectangular waveguide cavity‐resonator. A capacitive iris is employed to attain a strong coupling between the cavity and the input port, resulting in a larger fractional bandwidth (FBW) than a conventional aperture antenna. Another capacitive iris is embedded at the corner of the radiating aperture and extended into the cavity to maintain equal amplitude and a phase difference of 90° between the radiated ele… Show more
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