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Article Dans Une Revue IEEE Access Année : 2023

Dual-Band, Aperture-Shared Transmitarray for Vehicular SatCom Applications

Résumé

This paper proposes a novel design and the experimental characterization of a dual-band, shared aperture transmitarray operating in dual linear polarization at K/Ka-band. It is based on a 1-bit unit-cell realized using five metal layers and demonstrating low transmission loss (< 2 dB). By combining the polarization rotation method and the stacked patch architecture, the proposed shared aperture transmitarray is able to shape the beam independently in both K- and Ka-bands. A $40\times 40$ -element prototype has been optimized by using an ad-hoc numerical tool and fabricated. The experimental results are in excellent agreement with the numerical and full-wave electromagnetic simulations. This flat lens is illuminated by two standard gain horns with a nominal gain of 10 dBi. They are mounted in orthogonal polarization and located at the same distance from the aperture (110 mm). A peak gain of 27.1 and 29.9 dBi has been achieved, respectively, at 18.7 and 28.5 GHz corresponding to an aperture efficiency of 26.1 and 22.3%. The possibility to steer mechanically the radiation pattern has also been experimentally proven. The proposed antenna system is a low-cost and compact solution for future vehicular broadband SatCom applications.

Dates et versions

hal-04192491 , version 1 (31-08-2023)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

Citer

Reda Madi, Antonio Clemente, Ronan Sauleau. Dual-Band, Aperture-Shared Transmitarray for Vehicular SatCom Applications. IEEE Access, 2023, 11, pp.71088-71096. ⟨10.1109/ACCESS.2023.3293655⟩. ⟨hal-04192491⟩
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