大规模阵列天线基站的OTA测试方法研究

Research on OTA Test Methods for Active BS with Large-Scale Array Antenna

为了研究一套适用于大规模阵列天线有源基站的OTA测试方案,分析了近场、远近场和紧缩场三种不同的测试方案,从场地需求、测试方案、测试接口和测试结果几方面进行对比研究。研究表明,目前远近场结合方案是唯一可以实施的测试方案,其他方案均有许多问题需要解决,需要继续探索。

Large-scale array antenna has been applied to 3D MIMO products,which is one of the key techniques for 5G.In order to investigate a set of OTA test methods suitable for the active BS with large-scale array antenna,three test methods suitable for the near field,near/far field and compact filed were analyzed,and then they were compared from perspectives of chamber requirement,test procedure,test interface and test result.Research demonstrates that the method of the combination of the far field with near field is the only feasible test solution to be implemented.In contrast,there are many problems for other methods to be further investigated.