Influence Analysis of Asymmetric Correction Method on the Key Characteristics of the Electromagnetic Dual Probing System

The asymmetric correction method (ACM) has been proven that it can be used to eliminate the asymmetry of the differential port magnetic field probing system. Furthermore, this article proves that ACM can also be effective for asymmetric electromagnetic dual probing system when the traditional calibration method (TCM) has a huge measurement error. The characteristics' influence of the ACM on the electromagnetic dual probing system is also studied, including electric field calibration factor, magnetic field calibration factor, spatial resolution, differential electric field suppression, common electric field suppression, standing-wave measurement, and electromagnetic field scanning measurement. The analysis results show that most of the above-mentioned characteristics after using the ACM are basically consistent with those of the original symmetric probing system. The maximum characteristics' influence of the ACM is less than 10%, which appears in the electric field scanning measurement results.