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

  • 제25권2호
  • /
  • Pages.137-148
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  • 2014
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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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인체 부착형 UWB MIMO 안테나 설계

Design of UWB MIMO Antenna for On-Body Application

  • 주은만 (한양대학교 전자컴퓨터통신공학과) ;
  • 권결 (한양대학교 전자컴퓨터통신공학과) ;
  • 전재성 (한양대학교 전자컴퓨터통신공학과) ;
  • 김선우 (한양대학교 전자컴퓨터통신공학과) ;
  • 최재훈 (한양대학교 전자컴퓨터통신공학과)
  • Joo, Eunman (Department of Electronics & Computer Engineering, Hanyang University) ;
  • Kwon, Kyeol (Department of Electronics & Computer Engineering, Hanyang University) ;
  • Jeon, Jaesung (Department of Electronics & Computer Engineering, Hanyang University) ;
  • Kim, Sunwoo (Department of Electronics & Computer Engineering, Hanyang University) ;
  • Choi, Jaehoon (Department of Electronics & Computer Engineering, Hanyang University)
  • 투고 : 2013.08.30
  • 심사 : 2014.01.03
  • 발행 : 2014.02.28
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초록

본 논문에서는 인체 부착형 Ultra-Wideband(UWB) Multiple-Input Multiple-Output(MIMO) 안테나를 제안하고, 인체의 영향을 고려한 안테나 성능과 인체에 미칠 수 있는 영향에 대한 분석을 하였다. 제안된 안테나는 사각 모노폴 형태의 두 안테나와 격리도 특성을 개선하기 위하여 안테나 사이에 위치한 plunger형 isolator로 구성되어 있다. 안테나의 근거리장에 인체가 존재할 때, 인체가 안테나에 미치는 영향을 분석하기 위하여 시뮬레이션과 측정을 수행하였다. 측정 결과, Specific Absorption Rate(SAR) 값은 공급전력 0.5 mW에서 안테나 1, 2 각각 0.132, 0.08 W/Kg으로 1 g 평균 전자파 흡수율을 1.6 W/kg으로 제한한 FCC 지침을 초과하지 않음을 알 수 있다.

In this paper, design of a UWB MIMO antenna for an on-body application is proposed and antenna performance with body effect and the impact on the human body are investigated. The proposed MIMO antenna is composed of UWB antenna above ground plane and an additional plunger shaped isolator located between the two monopole antennas to enhance the isolation characteristic. The simulation and measurement are performed to analyze the effect of the human body on antenna performance when the human body is located in the near field of the antenna. According to the measurement results, the measured SAR values for antennas 1 and 2 are 0.132 W/kg and 0.08 W/kg, respectively when 0.5 mW input power is delivered. These values satisfy the FCC guideline which ragulates that the 1-g average SAR should be lower than 1.6 W/kg.

키워드

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