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Horn antenna

Problem Description

Aperture antennas are constructed in many combinations of dielectric and metal walls. Ridges are often added to the design and feed pin position or waveguide feeds have to be optimised. To satisfy these requirements it is important to accurately model the currents on the entire structure. Accurate surface current representations can, in turn, be used to compute secondary parameters that are of interest to aperture antenna developers, e.g.:

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

FEKO's mesh generator is able to mesh the surfaces of aperture antennas with triangles for geometrically accurate representation of all surfaces. The Method of Moments (MoM) can solve for the surface current on each of these triangles and then use these currents for derivation of other important analysis and visualisation parameters.

Basic parameters such as impedance bandwidth or directivity can be optimised with FEKO's internal optimiser.