Investigation of electromagnetic field coupling with twisted conducting line by expanded chain matrix

Yong Sun Cho, Jong Suk Ro, Yong Seek Chung, Changyul Cheon, Hyun Kyo Jung

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


In the current paper, we propose a new modeling algorithm to analyze the coupling between an incident electromagnetic field (EMF) and a twisted conducting line, which is a kind of non-uniform line. Typically, analysis of external field coupling to a uniform transmission line (TL) is implemented by the Baum-Liu-Tesche (BLT) equation so that the induced load responses can be obtained. However, it is difficult to apply this method to the analysis of a twisted conducting line. To overcome this limitation, we used a chain matrix composed of ABCD parameters. The proposed algorithm expands the dimension of the previous chain matrix to consider the EMF coupling effectiveness of each twisted pair, which is then applied to multi-conductor transmission line (MTL) theory. In addition, we included a comparative study that involves the results of each method applied in the conventional BLT equation and new proposed algorithm in the uniform two-wire TL case to verify the proposed method.

Original languageEnglish
Pages (from-to)364-370
Number of pages7
JournalJournal of Electrical Engineering and Technology
Issue number2
StatePublished - Mar 2013


  • Baum-Liu-Tesche (BLT) equation
  • Chain matrix
  • Coupling
  • Electromagnetic field (EMF)
  • Multi-conductor transmission line (MTL)
  • Transmission line (TL)
  • Twisted conducting line


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