An Efficient OTA Calibration and Pattern Estimation Method for 5G mmWave Large-Scale Arrays

被引:5
作者
Zhu, Liyu [1 ]
Xu, Fei [2 ]
Zhang, Xiaozhou [2 ]
Yu, Zhiqiang [1 ,3 ]
Zhou, Jianyi [1 ,3 ]
Lu, Rong [1 ,3 ]
Hong, Wei [1 ,3 ]
机构
[1] Southeast Univ, Sch Informat Sci & Engn, State Key Lab Millimeter Waves, Nanjing 210096, Peoples R China
[2] China Mobile Res Inst, Future Mobile Technol Lab, Beijing 100053, Peoples R China
[3] Purple Mt Labs, Nanjing 211111, Peoples R China
关键词
Antennas; Probes; Antenna measurements; Antenna arrays; Calibration; Estimation; Radio frequency; Antenna array calibration; midfield (MF); millimeter-wave (mmWave); over-the-air (OTA); pattern estimation; phased array; WAVE; ANTENNAS;
D O I
10.1109/TAP.2022.3168684
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this article, an efficient over-the-air (OTA) calibration and pattern estimation method under the midfield (MF) condition for the fifth-generation (5G) millimeter-wave (mmWave) large-scale arrays is proposed. A new transformation and revision algorithm is developed to calibrate the antenna array fast and accurate. Meanwhile, the time consumed in the accurate beamforming pattern estimation is reduced significantly. The proposed method requires a much smaller size anechoic chamber, a fixed probe antenna, and a vector network analyzer (VNA). The effectiveness is proven with the detailed theoretical analysis and experimented with a 64-element phased array in the 26 GHz band. The calibrated root-mean-square (rms) errors of the phase and magnitude are about 1.8 degrees/0.4 dB. In addition, the proposed calibration and pattern estimation method is tremendously cost-effective and time-saving with similar accuracy as the far-field test method.
引用
收藏
页码:8440 / 8451
页数:12
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