Conformal Ultra-Wideband Tightly Coupled Arrays With Low-Scattering Characteristics

A practical implementation of low-scattering and ultra-wideband conformal arrays is presented in this paper, where the proposed array is completely attached to the curved surface of a wing platform. The designed array enables to operate in the band of 0.5 — 2.0 GHz when scanning up to 0° and ±45°. As compared to the reference metal ground, the scattering of the proposed array is significantly reduced covering the band from 6.0 to 18.0 GHz. The profile height of the proposed conformal array is only about
$0.31\ \lambda_{\text{high}}$
.