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Aperture Antennas

Horn Large
Resonant pyramidal horn antenna

Aperture antennas are typically constructed with dielectric and metal walls, often with ridges.  Feed pins or waveguide ports are used as excitations. FEKO can accurately model and simulate such antennas. Surface currents are solved and these are used to compute secondary parameters that are of interest, e.g.

  • Transmission efficiency
  • Axial ratio
  • Far-field radiation patterns
  • Input impedance bandwidth

Structures can further be optimised according to specified performance criteria, using the extensive optimisation tools in FEKO.

 

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 currents_gain_3D.jpg

Axial-choke Conical Horn at 40 GHz:
3D gain and current distribution



CADmodel2.jpg
Axial-choke Conical Horn at 40 GHz:
Polar plot of orthogonal gain patterns
Axial-choke Conical Horn at 40 GHz:
CAD model