Abstract: An antenna assembly for use in a vehicle is provided, whereby the assembly is preferably concealed within a vehicle bumper or non-conductive fender. The assembly includes a flexible antenna radiator directly connected with an output of a tunable matching circuit contained within a housing, whereby the housing further provides a connection means between the input of the matching circuit and a radio system in the vehicle. The matching circuit is tunable by control means provided externally on the housing, enabling the antenna assembly to be easily tuned prior to or during installation. The inventive antenna assembly advantageously provides a low cost antenna with ease of installation, small size, and direct integration with a tunable matching circuit.