Ultra-Wideband Coplanar Vivaldi Antenna Array With Dielectric Patch Antenna for Grating Lobes Suppression
This paper details a new approach for enhancing the radiation characteristics of a coplanar Vivaldi antenna (CVA) array.First, the inter-element mutual coupling is reduced by introducing slots in the conventional CVA array.Then, a low-profile dielectric patch antenna (DPA) is situated between the CVA flares when it acts as a traveling wave radiator