Influence of Mutual Coupling and Surrounding Objects on Base Station Antennas in ITS

Abstract

Adaptive arrays which reduce interference are being considered ITS (Intelligent Transport Systems) base stations to realize automatic driving and safe driving support [1]. However, adaptive pattern control capability of the system may be degraded due to the mutual coupling between elements and the influence of surrounding objects. In this paper, the effects of mutual coupling between elements and surrounding objects on the adaptive arrays are clarified, and the appropriate base station antenna configuration is investigated. As a result of analysis, it is confirmed that the effect of mutual coupling between elements on the adaptive arrays is small. It is also confirmed that the distance, position, and size of the surrounding objects had a significant effect on the adaptive array. Based on the results of the analysis, an appropriate antenna configuration for the base station is proposed.