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 Dual-Band, Dual-Polarized Microstrip Patch Antenna with Two Input Ports

두 입력단자를 갖는 이중대역 이중편파 마이크로스트립 패치 안테나 설계

  • Jeong Hae-Young (Department of Radio & Engineering, Chungbuk National University) ;
  • Lee Kwang-Chun (RF Technology Research Team, Electronics and Telecommunication Research Institute) ;
  • Lee Sung-Jun (RF Technology Research Team, Electronics and Telecommunication Research Institute) ;
  • Choi Ik-Guen (School of Electrical & Computer Engineering, Chungbuk National University)
  • 정해영 (충북대학교 전파공학과) ;
  • 이광천 (한국전자통신연구원 RF기술연구팀) ;
  • 이성준 (한국전자통신연구원 RF기술연구팀) ;
  • 최익권 (충북대학교 전기전자컴퓨터공학부)
  • Published : 2005.11.01
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Abstract

This paper presents a dual-band, dual-polarized microstrip patch antenna with simple dual-probe feed. The inter-port isolation and cross-polarization are greatly improved by designing feed structure with annular gap between patch and feed-probe. Measured results show that the antenna's inter-port isolation and cross-polarization in each -10 dB return loss bandwidth of $1.84\;GHz\~l.93\;GHz$ and $2.62\;GHz\~2.81\;GHz$ are greater than 21 dB, greater than 22.2 dB and greater than 27 dB, greater than 19 dB, respectively. The antenna gain is about 6.9 dBi in both frequency bands.

본 논문은 두 개의 프로브 급전 단자만을 갖는 이중대역 이중 편파 마이크로스트립 패치 안테나를 제시한다. 급전 단자간 격리도와 교차 편파를 개선하기 위하여 패치와 급전 프로브간에 고리 모양 간격(annular gap)을 갖는 급전 구조를 설계하였으며, 제작된 안테나의 두 급전 단자간 격리도와 교차 편파는 반사 손실이 -10 dB 이하인 $1.84\;GHz\~l.93\;GHz$대역에서 각각 21 dB 이상, 22.2 dB 이상 그리고 $2.62\;GHz\~2.81\;GHz$ 대역에서는 각각 27 dB 이상, 19 dB 이상으로 우수한 급전 단자간 격리도와 교차 편파 특성을 가짐을 측정을 통해 확인하였다. 이득은 각 주파수 대역에서 약 6.9 dBi이다.

Keywords

References

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