International Journal of Antennas and Propagation (Jan 2015)

A New Kind of Circular Polarization Leaky-Wave Antenna Based on Substrate Integrated Waveguide

  • Chong Zhang,
  • Junhong Wang,
  • Meie Chen,
  • Zhan Zhang,
  • Zheng Li

DOI
https://doi.org/10.1155/2015/397960
Journal volume & issue
Vol. 2015

Abstract

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A new kind of circular polarization leaky-wave antenna with N-shaped slots cut in the upper side of substrate integrated waveguide (SIW) is investigated and presented. The radiation pattern and polarization axial ratio of the leaky-wave antenna are studied. The results show that the width of N-shaped slots has significant effect on the circular polarization property of the antenna. By properly choosing structural parameters, the SIW based leaky-wave antenna can realize circular polarization with excellent axial ratio in 8 GHz satellite band.