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Residual Voltage Reduction of Coaxial Surge Arrestor Using Ceramic Filler

세라믹 필터를 이용한 동축 서지어레스터의 잔류전압 저감

  • Published : 2007.02.28

Abstract

Extension of the mobile communication and the rapidly developing services connected with wireless multimedia(W-CDMA, DMB, Wibro, and so on) need great many base station transceiver systems, antennas, and many signal transmission line to embody these services. The min communication appliances system is exposed always in danger of transient overvoltage by direct stroke or induced lightning surge flowing in through antenna because the antenna of base station transceiver system or relay equipment is combined with expensive communication network equipments through signal transmission line. Now, gas discharge tube(GDT) or narrow band stub arrestor which is used by the surge protector for communication use is exposing limitations as for lightning surge protective means of the communication facility with high speed and wide frequency band. Therefore, for improving performance of surge arrestor, we applied ceramic filter which can reduce lightning surge invading from antenna effectively, and proved that ceramic filter is effective in residual voltage reduction through the experimental research.

현재 급속한 발전을 거듭하고 있는 이동통신 및 무선 멀티미디어 관련 서비스(W-CDMA, DMB, WiBro 등)의 확장은 이들 시스템을 구현하기 위한 수많은 기지국과 안테나 및 다수의 신호전송선로를 필요로 한다. 기지국 또는 중계시설의 안테나는 신호전송선로를 통하여 고가의 통신 네트워크 장비들과 결합되어 있으므로 주요 통신기기 시스템은 안테나를 통해 유입하는 직격뢰 및 유도뢰에 의한 순간적인 과전압의 위험에 항시 노출되어 있다. 현재 통신용 보호기로 사용되고 있는 가스방전튜브(GDT) 또는 협대역 스터브형 어레스터는 고속 광대역의 통신설비에 대한 뇌서지 보호수단으로서는 한계점이 드러나고 있다. 따라서 본 연구에서는 안테나를 통해 입사하는 뇌서지를 효과적으로 저감시켜주는 서지어레스터의 성능향상을 위해 세라믹 필터를 적용하였으며, 잔류전압 저감에 효과적임을 성능실험을 통해 입증하였다.

Keywords

References

  1. Roberto Siegert and Osama A. Mohammed, 'Selection of Varistor for Surge Protection Purpose based on their Voltage-Current Characteristic', Proc. of IEEE 2000, pp.162-165, 2000
  2. Keith W. Eilers, Mark Wingate, and Eric Pham, 'Application and Safety Issues for Transient Voltage Surge Suppressors', IEEE Tras. on IA, Vol. 36, No. 6, pp.1734-740, 2000
  3. Hitoshi Kijima, 'Lightning Protection for recent Telecommunications installations', 1999 International Symposium on Electromagnetic Compatibility, pp.306-309, 1999
  4. IEC61643-1, Surge protective devices connected to low-voltage power distribution systems-Performance requirements and testing methods, pp.73-93, 2001
  5. IEC61643-21, Surge protective devices connected to telecommunications and signalling networks- performance requirements and testing methods, p.39, 2000
  6. Satyamurthy, S.; Devarpiran, A.; Savithri, S.; Joseph, S.; Nageswaran, P.V., 'Evaluation of coaxial lightning protector for VHF antenna and its Implementation in combat tank', Electromagnetic Interference and Compatibility '97. Proceedings of the International Conference on, pp.341-346, 1997