A trim panel for a vehicle containing a vehicular antenna system comprising a substrate, an outer skin and a foam disposed between the substrate and the outer skin. An antenna/circuitry system (2) is located on the upper surface of the substrate (1) and is in contact with the urethane foam (7), the antenna/circuitry system (2) comprising an insulating base layer (12) including upper and lower surfaces and an electro-conductive antenna layer on the upper surface of the base layer (12) and an electro-conductive circuit layer on the lower surface of the base layer (12).