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


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.



  1. Electron. Lett. v.23 Characteristics of a two-layer electro-magnetically coupled rectangular patch antenna R. Q. Lee;K. F. Lee;J. Bobinchak
  2. IEEE Trans. Antennas Propagat. v.32 Broadband Microstrip Antennas Using Additional Resonat-ors Gap- Coupled to the Radiating Edges G. Kumar;K. C. Gupta
  3. IEEE Trans. Antennas Propagat. v.37 no.11 An Impedance-Matching Technique for Increasing the Bandwidth of Microstrip Antenna H. G. Pues;A. R. Van De Dapelle
  4. Electron. Lett. v.31 Single-layer single-patch wideband microstrip antenna T. Huynh;K. F. Lee
  5. IEEE Trans. Antennas Propagat. v.46 Design of Wide-Band Aperture-Stacked Patch Microstrip Antennas S. D. Targonski;R. B. Waterhouse;D. M. Pozar
  6. IEEE Asia Pacific Microwave Conference v.1 Broadband Air-Filled Stacked U-slot Patch Antenna C. L. Lee;B. L. Ooi;X. D. A. Zhou
  7. IEEE Trans. Antennas Propagat. v.42 no.2 Broadband Microstrip Antenna Design with the Simplified Real Frequency Technique H. An;B. K. J. C. Nauwelaers;A. R. Van De Capelle
  8. IEEE Antennas Propagat. Soc., Int. Symp. Dig. v.3 Design of wideband microstrip array antennas using the coupled lines J. I. Kim;Y. J. Yoon
  9. Microwave Engineering(2nd ed.) D. M. Pozar
  10. IEEE Trans. Microwave Theory Tech. v.32 Accurate Wide-Range Design Equations for Parallel Coupled Microstrip Lines M. Kirschning;R. H. Jansen
  11. IEEE J. Microwave, Opt. Acoust. v.3 Some Results on the Edge-Coupled Microstrip Section as an Impedance Transformer B. Easter;B. S. Shivashankaran
  12. CAD of Microstrip Antennas for Wireless Applications R. A. Sainati