Alternative Method for Transfer Impedance Measurements

Christian Tuerk*, Susanne Maria Bauer, David Johannes Pommerenke

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review


The objective of this paper is to present a simple
alternative method to determine the transfer impedance of
coaxial cables of different lengths and referring them to a perunit-
length parameter. The transfer impedance of any cable
is of interest since it accounts for coupling between cables
(crosstalk), for pick-up of external signals and also for emission
of electromagnetic energy. The method proposed here employs
a direct injection of a current into the center conductor and
into the braid simultaneously from either end of the cable. The
alternative method uses a modified line injection. The modified
line injection employs a common mode line injection as well
as a differential mode line injection. For both ways of current
injection equivalent circuits will be shown and the results will be
contrasted. The results are based on a forward gain measurement
of distinct lengths of the same quality of coax cables and require
little post processing.
Original languageEnglish
Title of host publicationProceedings of the 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE, EMC EUROPE 2020
Number of pages5
ISBN (Electronic)9781728155791
Publication statusPublished - 23 Sept 2020
Event2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE: EMC EUROPE 2020 - Rome (Online Conference), Virtual, Rome, Italy
Duration: 23 Sept 202025 Sept 2020


Conference2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE
Abbreviated titleEMC Europe 2020
CityVirtual, Rome
Internet address


  • Transfer impedance
  • vector network analyzer
  • line injection
  • measurement method
  • shielded cable
  • vector network analyzer (VNA)
  • common mode
  • differential mode

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Aerospace Engineering
  • Radiation
  • Electrical and Electronic Engineering
  • Hardware and Architecture
  • Computer Networks and Communications

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