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Electromagnetism

Electromagnetic Interference in Electronics: New Study Reveals Critical Findings

Strategic Insights

— 1 min read

A recent research study has shed new light on the potential for electromagnetic interference (EMI) in electronic devices. Conducted by researchers at China Academy of Engineering Physics, the study focused on the electromagnetic field emitted by the trigatron switch (TGS) and its impact on nearby electronic devices. The findings, published in AIP Advances, highlight the significant differences in the amplitude and peak frequency of the radiated electric field between the fast and slow breakdown states of the TGS.

Key Takeaways:

  • The electromagnetic field emitted by the TGS can cause significant EMI in nearby electronic devices.
  • The average electric field amplitude of the fast breakdown mode (FBM) is 2.96 times that of the slow breakdown mode (SBM).
  • The time-frequency characteristics of the radiated electric field were compared through wavelet analysis, revealing that high-frequency components are concentrated at the moment of gas gap breakdown.
  • The peak frequencies in FBM and SBM were found to be 100 and 67.5 MHz, respectively, with the concentration of high-frequency components being more pronounced in FBM.
  • The study provides guidance for optimizing the operating conditions of TGS in different electromagnetic compatibility (EMC) application scenarios.
  • The findings support accurate EMC analysis and design.
  • The research was conducted by Wanqing Jing, Fuxing Li, Xiao Yu, and Hua Zhong of the Institute of Electronic Engineering, China Academy of Engineering Physics.

Statistics:

  • The average electric field amplitude of FBM is 2.96 times that of SBM.
  • The peak frequencies in FBM and SBM are 100 and 67.5 MHz, respectively.
  • The concentration of high-frequency components is more pronounced in FBM than in SBM.

Sources:

  • Comparison of electric field characteristics of trigatron gas switch in FBM and SBM. AIP Advances, 2025, 15(9): 095322-095322-9. (AIP Advances - http://aipadvances.aip.org/).
  • NewsRx. Reports from China Academy of Engineering Physics Highlight Recent Research in Electronics (Comparison of electric field characteristics of trigatron gas switch in FBM and SBM). Electronics Newsweekly. October 21, 2025; p 452.

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