Research on an Electromagnetic Compatibility Test Method for Connected Automotive Communication Antennas

Based on the problem of electromagnetic interference in the darkroom of connected vehicle communication systems, a research method is proposed to evaluate the wireless communication quality between antennas using gain coupling. The electromagnetic compatibility of the far-field radiation pattern, radiation coupling degree, and near-field radiation pattern of the vehicle antenna and the vehicle antenna model were analyzed by establishing a 3D simulation model of the vehicle antenna and the external transmitting antenna. Based on the obtained simulation data, the arrangement scheme of the transmitting antenna in the darkroom can be determined. The performance index of the automotive OTA antenna can then be tested using the determined arrangement scheme, which can effectively reduce costs and provide reliable data.