Over the Air Testing and Error Analysis of 5G Active Antenna System Base Station in Compact Antenna Test Range

These days, several communication standardization committees are developing suitable and practical measurement methods for the Over the Air (OTA) testing of 5G non-connectorized base stations. Among the OTA testing methods, Compact Antenna Test Range (CATR) is very attractive for the direct testing of the far field Radio Frequency (RF) parameters and the wide frequency ranges, allowing the Active Antenna System (AAS) Base Station testing. The key OTA parameter of the AAS Base Station, such as Equivalent Isotropic Radiated Power (EIRP), Total Radiated Power (TRP), Equivalent Isotropic Sensitivity (EIS), has been studied in the introduced CATR system. Moreover, the measurement error assessment has been studied and analyzed with the CATR system. With the development of the 5G New Radio technology, the measurement technology and error analysis of the 5G AAS base stations are facing severe challenges. OTA testing will need to operate new requirements of the 5G AAS base stations.