Estimation of Electromagnetic Interference Field Emitted from Telecommunications Line

• Amemiya, Fujio

• 桑原, 伸夫

• Ideguchi, Tsuyoshi

抄録

An electric field is created around a telecommunications line by common-mode currents caused by clock signals, switching pulses and digitally transmitted signals. This field is a potential source of interference to radio reception. This paper describes measurement results for interference fields radiated from a telecommunications line. A method using optical fiber was used to measure the relation between common mode voltage and radiated electric field, and the results were compared with the calculated results discussed in IEC/CISPR. Our results show that the limits discussed in the CISPR are effective in restricting the electromagnetic interference due to conducted disturbances at telecommunication ports. The electric field strength from the telecommunications line caused by telecommunications signals is estimated on the basis of the relation between the common mode voltage and the radiated field strength. In this estimation, the dependence on the longitudinal conversion loss (LCL) of the telecommunications line is taken into account. The results show that the telecommunications signal on the ISDN basic access interface is not an interference source provided that the LCL of the telecommunications system meets the requirements for the ISDN interface.

収録刊行物

• IEICE Transactions on Communications

  IEICE Transactions on Communications E78-B (2), 159-167, 1995-02-01

  電子情報通信学会

キーワード

• interference
• disturbance
• EMC
• EMI
• common mode
• unbalance

詳細情報

• CRID: 1050008290042890880
• NII論文ID: 110003217302
• NII書誌ID: AA10826261
• ISSN: 17451345
• ISSN: 09168516
• HANDLE: 10228/00008491
• Web Site: https://kyutech.repo.nii.ac.jp/records/7287
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles