Abstract: An antenna adapted for receiving satellite signals (e.g., GNSS or SDARS) includes a first dielectric substrate having a conductive ground plane layer on a lower surface. A second dielectric substrate is juxtaposed with an upper surface of the first dielectric substrate, wherein first and second spiral antenna elements are interposed on an upper surface of the second dielectric substrate, and wherein the first and second spiral antenna elements each have respective origination ends separated by a gap. A plurality of conductive patches are disposed in an array on at least one of the first or second dielectric substrates between the upper surface of the first dielectric substrate and a lower surface of the second dielectric substrate. A plurality of conductive vias extend through the first dielectric substrate connecting the conductive patches to the ground plane layer. First and second RF transmission lines are respectively coupled to the origination ends.

Abstract: A tuned dipole antenna is adapted for use in cellular vehicle-to-everything (C-V2X) communication. A first substrate is provided which includes a conductive ground plane layer on a lower surface of a first dielectric layer, a plurality of conductive patches in an array on an upper surface of the first dielectric layer, and a plurality of conductive vias through the first dielectric layer connecting the conductive patches to the ground plane layer. A second substrate is juxtaposed with the upper surface of the first substrate. First and second dipole antenna elements are disposed on the second substrate and configured to be coupled to an RF transmission line. A thin antenna structure is obtained which can be mounted conformally onto exterior surfaces of a vehicle.