TY - GEN
T1 - Multi-probe Linear Matrix Inversion Method in Sub-array Internal Element Calibration
AU - Zhang, Yusheng
AU - Wang, Zhengpeng
AU - Miao, Jungang
N1 - Publisher Copyright:
© 2022 European Association for Antennas and Propagation.
PY - 2022
Y1 - 2022
N2 - This paper presents a sub-array internal element calibration method using linear matrix inversion method. Multi-probe is employed to detect the E-field distribution of the sub-array under test in the near field. A transmission matrix between the sub-array and probes is built. The key point of this method is getting low condition number transmission matrix. Furthermore, optimization strategy based on genetic algorithm is introduced to obtain more stable matrices. Simulation results show only 4 probes are needed for a 4-element array testing. Finally, a 4-element sub-array composed of rectangular waveguide antennas operating at 3.5 GHz was measured to validate the effectiveness of the proposed method, and the results show a high accuracy-the error between the proposed method and the reference test is less than ±0.2dB, ±2°.
AB - This paper presents a sub-array internal element calibration method using linear matrix inversion method. Multi-probe is employed to detect the E-field distribution of the sub-array under test in the near field. A transmission matrix between the sub-array and probes is built. The key point of this method is getting low condition number transmission matrix. Furthermore, optimization strategy based on genetic algorithm is introduced to obtain more stable matrices. Simulation results show only 4 probes are needed for a 4-element array testing. Finally, a 4-element sub-array composed of rectangular waveguide antennas operating at 3.5 GHz was measured to validate the effectiveness of the proposed method, and the results show a high accuracy-the error between the proposed method and the reference test is less than ±0.2dB, ±2°.
KW - Antenna array calibration
KW - OTA measurement
KW - condition number
KW - linear matrix inversion
KW - multi-probe calibration
UR - https://www.scopus.com/pages/publications/85130589045
M3 - 会议稿件
AN - SCOPUS:85130589045
T3 - 2022 16th European Conference on Antennas and Propagation, EuCAP 2022
BT - 2022 16th European Conference on Antennas and Propagation, EuCAP 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 16th European Conference on Antennas and Propagation, EuCAP 2022
Y2 - 27 March 2022 through 1 April 2022
ER -