Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Design and Manufacture of Modified Circular Ring antenna for WLAN/WiMAX Applications

WLAN/WiMAX 시스템에 적용 가능한 변형된 원형 링 안테나 설계와 제작

  • Lim, Dae-Soo (Department of Electronic Engineering, Silla University) ;
  • Yoon, Joong-Han (Department of Electronic Engineering, Silla University)
  • Received : 2013.11.12
  • Accepted : 2013.12.24
  • Published : 2014.02.28
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Abstract

In this paper, a dual-band circular ring monopole antenna with stub and ground slot 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 one circular ring of radiating patch, cross strip in circular ring, modified feed line, and two rectangular slot in the ground plane for triple-band operation. 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 determined for WLAN/WiMAX application.

본 논문에서는 WLAN/WiMAX시스템에 적용 가능한 삼중 대역을 갖는 변형된 원형 링 안테나를 설계 및 제작 하였다. 제안된 안테나는 원형 링 모양의 평면형 모노폴 설계를 기본으로 원형 링 내부의 십자형 스터브의 구조와 변형된 급전선로, 그리고 접지면의 사각 슬롯으로 구성함으로서 삼중대역 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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