Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Design of a Wideband Antipodal Vivaldi Antenna with an Asymmetric Parasitic Patch

  • Bang, Jihoon (Department of Electronics and Computer Engineering, Hanyang University) ;
  • Lee, Juneseok (Department of Electronics and Computer Engineering, Hanyang University) ;
  • Choi, Jaehoon (Department of Electronics and Computer Engineering, Hanyang University)
  • Received : 2017.10.16
  • Accepted : 2017.12.13
  • Published : 2018.01.31
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Abstract

An antipodal Vivaldi antenna with a compact parasitic patch to overcome radiation performance degradations in the high-frequency band is proposed. For this purpose, a double asymmetric trapezoidal parasitic patch is designed and added to the aperture of an antipodal Vivaldi antenna. The patch is designed to efficiently focus the beam toward the end-fire direction at high frequencies by utilizing field coupling between the main radiating patch and the inserted parasitic patch. As a result, this technique considerably improves the gain and stability of radiation patterns at high frequencies. The proposed antenna has a peak gain greater than 9 dBi over the frequency range of 6-26.5 GHz.

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References

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