Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Design for High Gain Spiral Antenna by Added Conical Cavity Wall

  • Jeong, Jae-Hwan (Department of Radio Communication Engineering, Korea Maritime University) ;
  • Min, Kyeong-Sik (Department of Radio Communication Engineering, Korea Maritime University) ;
  • Kim, In-Hwan (Department of Radio Communication Engineering, Korea Maritime University)
  • Received : 2013.04.12
  • Accepted : 2013.08.19
  • Published : 2013.09.30
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Abstract

This paper describes a design for a spiral antenna with a conical wall to obtain the high gain. The gain and the axial ratio of the spiral antenna were improved by a new design that included a conical wall and an optimized Archimedean slit on the ground plane in a conventional antenna with a circular cavity wall and a 4.5-turn slit. A gain improvement of 9.5 dBi higher and a good axial ratio of 1.9 dB lower were measured by the added conical wall and the newly designed slit from the current distribution control on the ground plane, respectively. The measured return loss, gain and axial ratio of the proposed antenna showed a good agreement with the simulated results. The proposed antenna will be applied to a non-linear junction detector system.

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References

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  2. Miniaturization of Archimedean spiral antenna for wideband beamforming arrays pp.08952477, 2018, https://doi.org/10.1002/mop.31523