A Study on Compound Technique for Increasing the Bandwidth of Microstrip Antennas using the Paralle Coupled Lines

평행 결합 선로를 이용한 복합 광대역 기법 적용 마이크로스트립 안테나에 관한 연구

  • 김정일 (한국전자통신연구원) ;
  • 한만군 (연세대학교 전지전자공학과) ;
  • 윤영중 (연세대학교 기계·전자공학과)
  • Published : 2001.08.01

Abstract

In this paper, parasitic patches gap-coupled microstrip antenna and stacked microstrip patch antenna combined with parallel coupled lines, which are a kind of wideband impedance matching network, are proposed to get the wider bandwidth. The iterative method using a distributed network is proposed to design the parallel coupled lines as a wideband impedance matching network. Measurements show that the proposed antennas provide wider bandwidths ~1.6 times and ~1.5 times those of conventional parasitic gap-coupled microstrip patch antenna and stacked microstrip patch antenna. In addition, measured radiation patterns show no serious variation of radiation patterns though the parallel coupled lines is added. The antenna gain is, however, lowered about 1 dB and 0.5 dB by the coupling loss in the parallel coupled lines.

Keywords

References

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