The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Analysis of Electromagnetic Pulse Coupling to Twisted Cable Using Chain Matrix

Chain Matrix를 이용한 Twisted Cable의 EMP(Electromagnetic Pulse) 결합 해석

  • Cho, Jea-Hoon (Dept. of Electronic & Communications Engineering, Hanyang University) ;
  • Lee, Jin-Ho (Agency for Defense Development) ;
  • Kim, Hyeong-Dong (Dept. of Electronic & Communications Engineering, Hanyang University)
  • Accepted : 2010.06.14
  • Published : 2010.07.31
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Abstract

In this paper, we analyzed the EMP coupling for the nonuniform transmission lines, such as twisted cables, using the chain matrix algorithm and the multi-conductor analysis. The BLT method is widely used for the EMP coupling analysis of the transmission line, however, it is difficult to apply to the nonuniform transmission lines. In order to analyze the EMP coupling of nonuniform transmission lines, the whole nonuniform transmission line is divided into incremental uniform line sections of the finite numbers, and the coupling in each small sections is now summed up to get the EMP coupling effect of the entire nonuniform transmission line. To verify the proposed EMP coupling analysis method, the result of the EMP coupling simulation is compared with the solution of BLT equations for a uniform transmission line case. The proposed method is applied to the twisted cable over ground in case of being illuminated by the HEMP in order to analyze the EMP coupling.

본 논문은 다중 도체 전송선 해석법과 chain matrix 알고리즘을 이용하여 twisted cable과 같은 비균일 전송선의 EMP 결합을 해석하였다. 전송선의 EMP 결합 해석을 위해 BLT(Baum-Liu-Tesche) 해석법이 널리 사용되고 있으나, twisted cable과 같은 비균일 전송선에 기존의 BLT 해석법을 바로 적용하기는 어렵다. Twisted cable과 같은 비균일 전송선을 해석하기 위해 수많은 작은 길이의 균일 전송선으로 나누어 모델링하였으며, 전체 비균일 전송선의 결합 특성은 각각의 균일 전송선의 EMP 결합 분석을 통해 최종적인 전송선의 결합 특성을 구함으로 써 가능해진다. 이러한 비균일 전송선 EMP 결합 해석 기법을 검증하기 위해 균일 전송선에 대하여 기존의 BLT 해석 결과와 비교하였으며, 제시된 비균일 전송선 EMP 결합 해석 기법을 지표면 위에 놓여 있는 twisted cable에 적용하여 대기 중의 핵폭발에 의한 HEMP(High altitude Electromagnetic Pulse)와 같은 매우 강한 펄스가 입사되었을 때, 전송선에 연결된 부하에 유기되는 전류(또는 전압) 응답을 분석하였다.

Keywords

References

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