Improvement of Power Capability and Field Uniformity with Tapered Coaxial Matching Units in Strip Line for Measuring Electromagnetic Immunity of Vehicular Components

  • Chung, Yeon-Choon (EMC Group, Korea Research Institute of Standards and Science) ;
  • Kang, Tae-Won (EMC Group, Korea Research Institute of Standards and Science) ;
  • Park, Dong-Chul (Dept,. of Radio Science and Engineering, Chungnam National University)
  • Published : 1997.10.01

Abstract

The design process and construction method of a strip line is described for measuring radiated susceptibility of vehicular components having electrical cables more than 2 min length. he characteristic impedance of the trip line was determined 90$\Omega$ to obtain the field uniformity of $\leq$${\pm}$3 dB in the frequency range from 100 kHz to 500 MHz. Tapered coaxial lines were used instead of the traditional lumped circuit element for the impedence matching units, therefore, the strip line has high power capability. Using these techniques, the field uniformity and power capability of a strip line could be considerably improved.

Keywords

References

  1. IEEE Int. Symp. On EMC System Level Approach for automotive Electromagnetic Compatibility M.F.Sultan.;A.C.Cangellaris.
  2. SAE J1I3/23 Electromagentic Copatibilty Measurement Procedure for Vehicle Component - Immunity to Rasiated Electromagneti Fields, 10㎑ to 200㎒, Strip Line Method
  3. ACEA 72/245 Annex 9 Methods of testing sof immunity of electrical/electronic sub-assembiles to electromagnetic radiation
  4. DNIN 40839 Teil 4 Electromagetic Compatibility (EMC) Elektromagnestische Vertaglichkeit(EMV) in Kraftfahrzeugen, Eingestrahlte Stirgroβen. Electromagnetic Compatibility (EMC) in motor vehicles; radiated distrubances
  5. 1993 IEEE Int. Symp. on EMC Properties of open stri lines forEMC Measurements W.Bittinger.
  6. KRISS-96-065-IR Study on the Suppession Techiques of RFI from IGnition System Y.C.Chung.;T.W.Kang.;S.W.Won.