Research on a polarization probe compensation algorithm in planar near-field measurement
To study the characteristics of antennas,this paper employs near-field measurement techniques to compute the far-field radiation pattern of the antenna,offering the advantages of low cost and speed.Recognizing the influence of probe parameters in planar near-field measurements on the far-field radiation pattern,this research is based on the planar near-to-far-field transformation algorithm,incorporating probe compensation techniques and polarization compensation techniques.Using HFSS simulation,the far-field simulated radiation pattern of the antenna under test is obtained.By constructing the algorithm,the radiation pattern obtained from the near-to-far-field transformation algorithm is compared with the actual measured far-field radiation pattern to verify the accuracy of the algorithm.Further combined with polarization compensation and probe compensation algorithms,comparisons are made with uncorrected results and far-field radiation patterns.The results indicate that the polarization probe compensation algorithm can effectively correct the influence of the probe on the far-field radiation pattern.Its uncertainty exceeds the near-to-far-field transformation algorithm by 1.429 5 dB and the polarization compensation algorithm by 0.906 2 dB,ensuring the objectivity and independence of the research.
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