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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Design of Cavity-Backed High Gain Dual Band Microstrip Antenna Using Frequency Selective Surface

FSS 구조를 이용한 Cavity-Backed 고이득 이중 대역 마이크로스트립 안테나 설계

  • Kim, Byoung-Chul (School of Electrical and Computer Engineering, Ajou University) ;
  • Choo, Ho-Sung (School of Electronics and Electrical Engineering, Hongik University) ;
  • Park, Ik-Mo (School of Electrical and Computer Engineering, Ajou University)
  • 김병철 (아주대학교 전자공학부) ;
  • 추호성 (홍익대학교 전자전기공학부) ;
  • 박익모 (아주대학교 전자공학부)
  • Published : 2010.02.28
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Abstract

In this paper, a cavity-backed high gain dual band microstrip antenna with Frequency Selective Surface space(FSS) for WLAN is proposed. The proposed antenna that operates in IEEE 802.11a/b bands with similar radiation pattern and gain is fabricated on RO4003 substrate with a dielectric constant of 3.38. The size of the antenna is $71.5{\times}42.0{\times}6.6\;mm^3$, and the FSS size is $120.0{\times}120.02\;mm^3$. The ground plane size including cavity is $150.0{\times}145.0\;mm^3$. The antenna is fed by coaxial cable. The simulated bandwidths of the antenna are 2.369~2.517 GHz and 5.608~5.833 GHz for VSWR<2. The gains are 11.23 dBi and 12.60 dBi, respectively, for the lower and upper bands.

본 논문에서는 Frequency Selective Surface(FSS)를 이용하여 IEEE 802.11a/b 대역에서 11 dBi 이상의 이득과 유사한 모양의 복사 패턴을 가지며 동작하는 cavity-backed 이중 대역 마이크로스트립 안테나를 제안한다. 안테나의 크기는 $71.5{\times}42.0{\times}6.6\;mm^3$이고, FSS의 크기는 $120.0{\times}120.02\;mm^3$, 그리고 cavity를 포함한 접지면의 크기는 $150.0{\times}145.0\;mm^3$이다. 안테나는 동축 케이블을 이용하여 급전하였으며, 안테나와 FSS는 비유전율이 3.38인 RO4003 기판 위에 설계하였다. 전산 모의 실험 결과, VSWR<2 기준으로 2.369~2.517 GHz와 5.608~5.833 GHz의 대역폭을 가지며, 각 대역의 중심 주파수에서의 이득은 11.23 dBi와 12.60 dBi다.

Keywords

References

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