**5. Conclusions**

This paper proposes a modeling method to establish a parametric-conducted emission model of a switching model power supply (SMPS) chip through a developed vector-fitting algorithm. Reference the ICEM standard, the parametric conducted emission model is also divided into two parts: ICIA and ICPDN. The parameters of ICIA are identified by measured data and correlated with key components; an improved vector fitting algorithm is proposed to solve the fitting problem of ICPDN without phase information. The experimental results show that the proposed method could achieve the international standard requirements and has sufficient accuracy and effectiveness.

**Author Contributions:** X.H. proposed, designed and wrote the paper; S.X. supervised the experiments and write-up of the paper; Z.C. helped in carrying out experiments.

**Funding:** This research was funded by National Natural Science Foundation of China (No.61271045) and Defense Industrial Technology Development Program (No.JCKY2016601B005).

**Conflicts of Interest:** The authors declare no conflict of interest.
