SDARS - Antennas: Environmental Influences, Measurement, Vehicle Application Investigations and Field Experiences

According to the challenging antenna performance requirements for the reception of the Satellite Digital Audio Radio Services (SDARS), environmental influences are playing an important role for the practical design and application of such an antenna. This paper will report about remarkable influences on the performance of SDARS - Antennas with respect to ground plane conditions for measurements in anechoic chambers, as well as for vehicle mounting conditions. Results of field tests will show, what this means for reception.