Optimise Waveguide Pin Feed Location

Analyse the effect of the pin offset on the reflection coefficient using an optimisation grid search and the NGF solution settings.

A waveguide can be fed using a pin placed at a quarter of a waveguide wavelength from a terminated waveguide end. For an arbitrary cross-sectioned waveguide, the waveguide wavelength is not always known making it difficult to determine the pin feed position.

Figure 1. A 3D view of the waveguide fed with a pin feed and waveguide port in CADFEKO.