Abstract
AbstractIn this paper, a Substrate Integrated Waveguide based (SIWG) planar dual-polarized antenna is proposed for satellite communication operating in Ku-band. In this proposed work, dual polarization is excited by two orthogonal microstrip lines with enhanced isolation. In this work, three concentrated connected rings are placed in a circular slot of a circular SIWG cavity mimicking a split-ring resonator. The inductive coupling between the middle and innermost ring enhances the bandwidth as well as improves the isolation. The antenna structure exhibits (13.2–14.49 GHz) 9.25% impedance bandwidth with 24 dB isolation at 13.7 GHz. The realized broadside gain at the resonant frequency is 9.22 dBi. The highly efficient dual-polarized operation makes this design an attractive candidate for satellite applications in Ku-band and can be used for the CubeSat applications.KeywordDual polarizationSubstrate integrated waveguideWideband antennaSlot antenna
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