Journal of Electrical Engineering and Technology

  • 제8권4호
  • /
  • Pages.856-862
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  • 2013
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  • 1975-0102(pISSN)
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  • 2093-7423(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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Cavity-backed Two-arm Spiral Antenna with a Ring-shaped Absorber for Partial Discharge Diagnosis

  • Kim, Han-Byul (Division of Electronics and Electrical Engineering, Dongguk University) ;
  • Hwang, Keum-Cheol (Division of Electronics and Electrical Engineering, Dongguk University) ;
  • Kim, Hyeong-Seok (School of Electrical and Electronics Eng., Chung-Ang University)
  • 투고 : 2013.03.20
  • 심사 : 2013.04.28
  • 발행 : 2013.07.01
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초록

A cavity-backed two-arm spiral antenna for partial discharge diagnosis is presented. The proposed antenna consists of a two-arm Archimedean spiral, a tapered microstrip balun as spiral antenna feed, and a ring-shaped absorber-loaded cavity. The Archimedean spiral antenna is designed for the operating frequency band of 0.3 GHz to 1.5 GHz and fed by the tapered microstrip balun. The cavity is utilized to transform the bidirectional beam into a unidirectional beam, thereby enhancing gain. The ring-shaped absorber is stacked in the cavity to reduce the reflected waves from the cavity wall. The proposed antenna is designed and simulated using CST Microwave Studio. A prototype of the proposed antenna is likewise fabricated and tested. The measured radiation patterns are directional to the positive z-axis, and the measured peak gain is 8.13 dBi at a frequency of 1.1 GHz.

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참고문헌

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