Double-Ridged Horn Antenna

Application ID: 41701

A double-ridged horn antenna is popularly used in anechoic chambers to characterize an antenna under test (AUT), from S-band to Ku-band, due to its reliable performance in a wideband frequency range. This tutorial models a double-ridged horn antenna and computes the voltage standing wave ratio (VSWR), far-field radiation pattern, and antenna directivity.

A lumped port is assigned on the boundary between the inner and outer conducting surface at the end of the coaxial connector. The outermost layer of the air domain is configured to be a perfectly matched layer (PML), which simulates the absorption of all outgoing radiation from the antenna as would occur in a real anechoic chamber. The mesh is dynamically controlled by the Electromagnetic Waves, Frequency Domain interface based on each simulation frequency.

This model example illustrates applications of this type that would nominally be built using the following products: