A Fast Phased Array System Calibration Method by Fully Utilising In-Built Beamformers

Joseph Poujiong Wang*, Yueh Lin Tsai, Wei Ji Chen, Jui Hung Chen, Ruey Bing Hwang

*此作品的通信作者

研究成果: Conference contribution同行評審

摘要

The phased array system (PAS) plays an essential role in modern communications. However, the imperfection of active devices and feeding networks will cause amplitude and phase undesirability for each antenna element, further resulting in beam distortion and performance degradation. Hence, calibration is necessary to maintain desirable PAS operation. One well-known method is the rotating element electric field vector method as shown in [1]. By imposing an extra phase shift on the element to be calibrated, its amplitude and phase are numerically obtained through the measured amplitude variation of the E-field formed by the entire array. In [2] a power-only measurement method is enough to determine the element complex E-field change by shifting the element phase to pi/2 and turning off the element under test in two separate measurements. This paper introduces a novel alternative fast PAS calibration method incorporating phase rotation and amplitude attenuation into calibration practice. By iteratively measuring the array radiation power under system in-built beamformer control, including arbitrary phase shifting and specific amplitude attenuation applied to each element, the initial phase and amplitude for all elements can be solved.

原文English
主出版物標題2022 IEEE Conference on Antenna Measurements and Applications, CAMA 2022
發行者Institute of Electrical and Electronics Engineers
ISBN(電子)9781665490375
DOIs
出版狀態Published - 2022
事件2022 IEEE Conference on Antenna Measurements and Applications, CAMA 2022 - Guangzhou, China
持續時間: 14 12月 202217 12月 2022

出版系列

名字IEEE Conference on Antenna Measurements and Applications, CAMA
2022-December
ISSN(列印)2474-1760
ISSN(電子)2643-6795

Conference

Conference2022 IEEE Conference on Antenna Measurements and Applications, CAMA 2022
國家/地區China
城市Guangzhou
期間14/12/2217/12/22

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