Asynchronous 256-Element Phased-Array Calibration for 5G Base Station

This letter presents the phased-array antenna calibration of the 5G millimeter-wave base station (BS). BS and the instrument are not synchronized with the common 10-MHz reference considering the actual factory calibration scenario. With the proposed phase tracking and dynamic-range suppressing phase...

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Bibliographic Details
Published in:IEEE microwave and wireless components letters 2021-06, Vol.31 (6), p.798-801
Main Authors: Aoki, Yuuichi, Hwang, Yongan, Kim, Sunryoul, Kim, Yonghoon, Yang, Sung-Gi
Format: Article
Language:English
Subjects:
5G mobile communication
Antenna arrays
Antenna measurements
beamforming
Calibration
Gain
Global Positioning System
least-squares method
Millimeter waves
millimeter-wave (mmWave) technology
multiin–multiout (MIMO) phased array
Phase measurement
Radiofrequency integrated circuits
Synchronization
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Description
Summary:This letter presents the phased-array antenna calibration of the 5G millimeter-wave base station (BS). BS and the instrument are not synchronized with the common 10-MHz reference considering the actual factory calibration scenario. With the proposed phase tracking and dynamic-range suppressing phase matrix, the measurement time to characterize gains and phases of 256 elements takes less than 2.3 ms.
ISSN:1531-1309
2771-957X
1558-1764
2771-9588
DOI:10.1109/LMWC.2021.3058955