Design of an antenna for automotive communication in FM band

Abstract: Antennas used for FM transmission in radio stations are too large and to fit in the same for vehicular communication is inconceivable, considering the dimensional aspects. The product “EVAM System” is used for automotive communication in emergency vehicles. This product uses FM band for transmission of traffic information to the surrounding vehicle. The FM antennas normally installed on the vehicles are used for reception. The radiation efficiency of these antennas is too low and VSWR is too large. Thus, the FM reception antennas reflect the power at large scale, damaging the product as a result. The main objective of this thesis is to design a low-profile antenna, which can be mounted on the emergency vehicle as demanded by H&E Solutions AB. In addition to the dimensional requirements, the antenna should also satisfy the specified performance characteristics. These specifications are explained in detail and a design that best suits the product is developed considering both dimensional and performance characteristics.