Publication detail

Modification of Approximate Worst-case Measurement System for EMI Filters

DŘÍNOVSKÝ, J. KEJÍK, Z. RŮŽEK, V. ZACHAR, J.

Original Title

Modification of Approximate Worst-case Measurement System for EMI Filters

English Title

Modification of Approximate Worst-case Measurement System for EMI Filters

Type

conference paper

Language

en

Original Abstract

This paper deals with the approximate worst-case test method for testing the insertion loss of the EMI filters. The systems with 0.1 ohm and 100 ohms impedances are usually used for this testing. These measuring systems are required by the international CISPR 17 standard. The ain disadvantage of this system is the 0.1 ohm impedance transformer. The dynamic range for the transformation from the 50 ohms, which is most common matched impedance for the measurement setups, to 0.1 ohm is very large. It is no easy to produce such transformers with his high impedance transformation ratio. These transformers have usually very narrow bandwidth. This paper discusses the alternative system with 1 ohm and 100 ohms impedances. The performance of these systems was tested on several filters and the obtained data are epicted, too. The performance comparison of several filters in several systems is also included. The performance of alternate worst-case system is discussed in the conclusion.

English abstract

This paper deals with the approximate worst-case test method for testing the insertion loss of the EMI filters. The systems with 0.1 ohm and 100 ohms impedances are usually used for this testing. These measuring systems are required by the international CISPR 17 standard. The ain disadvantage of this system is the 0.1 ohm impedance transformer. The dynamic range for the transformation from the 50 ohms, which is most common matched impedance for the measurement setups, to 0.1 ohm is very large. It is no easy to produce such transformers with his high impedance transformation ratio. These transformers have usually very narrow bandwidth. This paper discusses the alternative system with 1 ohm and 100 ohms impedances. The performance of these systems was tested on several filters and the obtained data are epicted, too. The performance comparison of several filters in several systems is also included. The performance of alternate worst-case system is discussed in the conclusion.

Keywords

EMC, EMI filter, IL

RIV year

2010

Released

19.04.2010

Publisher

MJ servis, Brno

Location

Brno

ISBN

978-1-4244-6319-0

Book

Proceedings of 15th Conference Microwave Techniques COMITE 2010

Edition

1

Edition number

1

Pages from

91

Pages to

93

Pages count

3

Documents

BibTex


@inproceedings{BUT33908,
  author="Jiří {Dřínovský} and Zdeněk {Kejík} and Václav {Růžek} and Jiří {Zachar}",
  title="Modification of Approximate Worst-case Measurement System for EMI Filters",
  annote="This paper deals with the approximate worst-case test method for testing the insertion loss of the EMI filters. The systems with 0.1 ohm and 100 ohms impedances are usually used for this testing. These measuring systems are required by the international CISPR 17 standard. The  ain disadvantage of this system is the 0.1 ohm impedance transformer. The dynamic range for the transformation from the 50 ohms, which is most common matched impedance for the measurement setups, to 0.1 ohm is very large. It is no easy to produce such transformers with  his high impedance transformation ratio. These transformers have usually very narrow bandwidth. This paper discusses the alternative system with 1 ohm and 100 ohms impedances. The performance of these systems was tested on several filters and the obtained data are  epicted, too. The performance comparison of several filters in several systems is also included. The performance of alternate worst-case system is discussed in the conclusion.",
  address="MJ servis, Brno",
  booktitle="Proceedings of 15th Conference Microwave Techniques COMITE 2010",
  chapter="33908",
  edition="1",
  howpublished="print",
  institution="MJ servis, Brno",
  year="2010",
  month="april",
  pages="91--93",
  publisher="MJ servis, Brno",
  type="conference paper"
}