Planar slot antenna backed by substrate integrated waveguide cavity

  • Luo G
  • Hu Z
  • Dong L
 et al. 
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A novel design method of low profile cavity backed planar slot antenna has been described in this paper. The whole antennaincludingbackedcavityandfeedingelementiscompletely constructed at a single substrate by using substrate integrated waveguide technique and grounded coplanar waveguide. An example with 1.7% bandwidth has been presented, which has 5.4 dBi gain, 16.1 dB front-to-back ratio and  dB maximum cross polarized radiation level with its total thickness less than . The proposed antenna keeps good radiation performance of conventional cavity backed antenna and has advantages of conventional planar antenna including low profile, light weight, easy fabrication with low cost and convenient integration with planar circuit.

Author-supplied keywords

  • Cavity backed
  • Grounded coplanar waveguide (GCPW)
  • Low profile
  • Slot antenna
  • Substrate integrated waveguide (SIW)

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