Modified substrate integrated wave guide (SIW) horn antenna

A modified substrate integrated waveguide (SIW) horn antenna is proposed in this paper. A probe is used as the feed line of the antenna in order to avoid parasitic radiation and high conductor loss. The proposed antenna is numerically investigated using HFSS software package. Radiation properties of the antenna including reflection coefficient, gain and radiation patterns are reported and compared with those of a conventional SIW horn antenna of the same sized aperture. Results show that wider impedance bandwidth and higher gain can be obtained by the proposed antenna.

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