The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Design of Circular Ring Antenna with Half-Circular Strip for WLAN/WiMAX Applications

WLAN/WiMAX 시스템에 적용 가능한 반원 스트립 구조를 갖는 원형 링 안테나의 설계

  • Received : 2014.01.09
  • Accepted : 2014.04.11
  • Published : 2014.04.30
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Abstract

In this paper, a dual-band circular ring monopole antenna with semi-circular strip for WLAN(Wireless Local Area Networks)/WiMAX(World interoperability for Microwave Access) applications. The proposed antenna is based on a planar monopole design, and composed of half circular strip for dual-band operation which cover WLAN and WiMAX frequency bands. To obtain the optimized parameters, we used the simulator, Ansoft's High Frequency Structure Simulator(HFSS) and found the parameters that greatly effect antenna characteristics. Using the obtained parameters, the antenna is fabricated. The numerical and experiment results demonstrated that the proposed antenna satisfied the -10 dB impedance bandwidth requirement while simultaneously covering the WLAN and WiMAX bands. And characteristics of gain and radiation patterns are obtained for WLAN/WiMAX frequency bands.

본 논문에서는 WLAN/WiMAX시스템에 적용 가능한 반원 구조를 갖는 원형 링 안테나를 설계 및 제작 하였다. 제안된 안테나는 평면형 모노폴 설계를 기본으로 원형 링 모양 그리고 링 내부의 반원형 선로의 단순구조로 구성함으로서 WLAN/WiMAX 대역을 포함하는 이중대역 특성을 갖도록 설계하였다. 최적화된 파라메타를 얻기 위해 상용 툴(HFSS)을 사용하여 시뮬레이션 하였으며 안테나 성능에 민감하게 작용하는 파라메타를 찾아내서 최적화된 수치를 얻었다. 얻어진 최적화된 수치를 사용하여 제안된 안테나를 제작하였다. 시뮬레이션 결과와 측정결과가 어느 정도 일치하고 있는 데이터를 얻었으며 -10dB 임피던스 대역폭을 기준으로 WLAN/ WiMAX 대역을 동시에 만족하고 있음을 확인하였다. 그리고 WLAN/WiMAX 대역에서 이득과 방사패턴의 특성을 얻었다.

Keywords

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