Miniaturized Antennas for Vehicular Communication Systems

Abstract : This paper contains an overview on 3 antennas, whose properties are of interest for vehicular communications. The first one is a wide-band miniaturised antenna with a stable radiation pattern. The second one is a low-profile antenna inspired by high impedance surfaces. The last one is a helical-ring antenna, whose radiation is toward a half-space in circular polarisation without the use of a metallic reflector. For all of them, the basic principles and simulation results are presented. For the last one, a prototype is also analysed.