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With the advantage of high bandwidth and small insertion impedance, a current surface probe (CSP) used to measure switching current waveforms is presented in this paper. Its transfer impedance is characterized and validated in the first time by measuring an IGBT switching current with a passive current probe (CP) and a Hall effect current probe (HECP). It is also shown that a return current beneath...
Two current probes, based on the current injection method, are designed with appropriated high frequency magnetic material. These probes are used to measure the common-mode impedance of power converters in real-operating conditions. The characterization of this impedance is of importance for the EMI filter design. In this paper, a simple formulation of the probe's transfer impedance using S-parameters...
Tapered cells are used in E-field probes calibration [1]–[2]. Nevertheless, few studies on tapered cells are found. In this paper, the structure of taper cells is introduced and a theoretical model for characteristic impedance calculation is provided. Based on this model, we constructed a tapered cell. And the model is then verified by the measured characteristic impedances of the tapered cell.
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