Analysis of shielded twisted pair cable to external field coupling by expanded chain matrix modeling

Yong Sun Cho, Hyun Kyo Jung, Changyul Cheon, Young Seek Chung

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


In this paper, a numerical method for analyzing coupling between high-altitude electromagnetic pulse (HEMP) as external field and a shielded twisted pair (STP) cable is proposed, which is based on an expanded chain matrix. Load responses of electromagnetic (EM) field excitation in uniform transmission line (TL) are solved by Baum-Liu-Tesche (BLT) equations in frequency domain, however, it is difficult to apply BLT equations to solve load responses of STP cable because the iteratively changing configuration of each twisted pairs are involved in cable. To avoid this problem and decrease memory and CPU time, we proposed the expanded chain matrix modeling method that is calculated using ABCD parameters, and applied multi-conductor transmission line (MTL) theory to consider the EMP coupling effectiveness of each twisted pairs. The results implemented by the proposed method are presented and compared with those obtained by the finitedifference time domain (FDTD) method as a kind of 3D full wave analysis.

Original languageEnglish
Pages (from-to)2049-2057
Number of pages9
JournalJournal of Electrical Engineering and Technology
Issue number6
StatePublished - 1 Nov 2014


  • Baum-Liu-Tesche (BLT)
  • Chain matrix
  • Coupling
  • Electromagnetic (EM)
  • Finitedifference Time Domain (FDTD)
  • High-altitude electromagnetic pulse (HEMP)
  • Multi-conductor transmission line (MTL)
  • Shielded twisted pair (STP)
  • Transmission line (TL)


Dive into the research topics of 'Analysis of shielded twisted pair cable to external field coupling by expanded chain matrix modeling'. Together they form a unique fingerprint.

Cite this