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

Yuuichi Aoki,Yongan Hwang,Sunryoul Kim,Yonghoon Kim,Sung-Gi Yang

IEEE microwave and wireless components letters（2021）

Cited 7|Views11

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Abstract

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.

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Key words

Calibration,Phase measurement,Gain,Antenna measurements,Synchronization,Global Positioning System,Radiofrequency integrated circuits,5G mobile communication,beamforming,calibration,least-squares method,millimeter-wave (mmWave) technology,multiin-multiout (MIMO) phased array

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