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

  • 제28권10호
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  • Pages.761-768
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  • 2017
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  • 1226-3133(pISSN)
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  • 2288-226X(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
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누설전자파 측정을 위한 초광대역 로그주기 안테나의 소형화

Miniaturization of Ultra Wideband Log-Periodic Dipole Antenna for Leaked Electromagnetic Measurement

  • 최동훈 (연세대학교 전기전자공학과) ;
  • 김태형 (연세대학교 전기전자공학과) ;
  • 문준호 (연세대학교 전기전자공학과) ;
  • 육종관 (연세대학교 전기전자공학과)
  • Choi, Dong-Hoon (Department of Electrical and Electronic Engineering, Yonsei University) ;
  • Kim, Tae-Hyung (Department of Electrical and Electronic Engineering, Yonsei University) ;
  • Moon, Jun-Ho (Department of Electrical and Electronic Engineering, Yonsei University) ;
  • Yook, Jong-Gwan (Department of Electrical and Electronic Engineering, Yonsei University)
  • 투고 : 2017.05.29
  • 심사 : 2017.10.19
  • 발행 : 2017.10.31
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⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 안전한 전파 환경의 구현과 전자파적합성(Electromagnetic Compatibility: EMC) 문제를 해결하기 위한 초광대역 로그주기 다이폴 안테나의 소형화를 연구하였다. 또한 고주파 대역에서 신호 대 잡음비를 개선하기 위해 안테나에 발룬(balun)을 부착하여 차동 모드인 안테나와 단일 모드인 동축 케이블의 동작을 안정화 하였다. 제안한 안테나의 소형화와 대역을 증가시키기 위해 4 GHz 이하의 공진 주파수 대역에는 fat 다이폴 구조를 사용했으며, 4 GHz 초과의 공진 주파수 대역에서는 일반적인 다이폴 형태를 사용하였다. 제안한 안테나의 대역폭은 0.6~8.0 GHz이고, 비 대역폭이 12.3 : 1이다. 측정된 최대 이득은 5.7~9.1 dBi을 나타내며, 반 전력 빔폭은 $29.4^{\circ}{\sim}100.2^{\circ}$인 지향성 안테나이다.

In this paper, to implement the electromagnetic wave environment and solve electromagnetic compatibility(EMC) problem, miniaturization of ultra-wide band log periodic dipole antenna for measurement was investigated. In addition, in oder to improve the signal-to-noise ratio in high frequency band, balun was connected to the antenna to stabilize the operation of the differential mode antenna and the single mode coaxial cable. To minimize the total size and to increase bandwidth of the antenna, a fat dipole structure was used for the resonance frequency band below 4 GHz and a general dipole shape was used for that above 4 GHz. The bandwidth of the proposed antenna was represented from 0.6 GHz to 8.0 GHz with a ratio bandwidth of 12.3 : 1. Measured peak gain varies from 5.7 dBi to 9.1 dBi, and a half power beamwidth was presented from $29.4^{\circ}$ to $100.2^{\circ}$ in operating range.

키워드

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