Shielding Effectiveness of “Pigtail” Connections

Hassan A.N. Hejase, Arlon T. Adams, Roger F. Harrington, Tapan K. Sarkar

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


The shielding effectiveness of a “pigtail” connection between a coaxial transmission line and a ground plane is treated rigorously by the method of moments, as a function of the type and number of pigtails and frequency. The type of pigtail connection is shown to be crucial with regard to radiation and shielding effectiveness, even though the pigtail itself does not radiate significantly. All pigtails are not equal, even though they may be short electrically. A short pigtail is significantly better than a longer one. A long pigtail connection may actually enhance radiation. Finally, multiple pigtails yield significant improvement over the single pigtail only for short pigtails. Results have been compared with the experiment, resulting in good agreement.

Original languageEnglish (US)
Pages (from-to)63-68
Number of pages6
JournalIEEE Transactions on Electromagnetic Compatibility
Issue number1
StatePublished - Feb 1989

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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