Waveguide Antenna Simulation
Design, tune, and validate horn, slotted, and array waveguide antennas for RF and radar.
This note shows how to model a quarter E-plane horn antenna in EMWorks using PEC walls, radiation boundaries, and a single port at the throat to compute reflection coefficient and 3D radiation patterns at the operating frequency.
Tilted pyramidal horn optimized near 4.5 GHz. The note covers model setup, copper and air regions, radiation boundaries, S-parameter sweep, and near/far-field plots.
This note simulates a 1.296 GHz horn feed for a passive parabolic reflector, comparing return loss and radiation patterns with published measurements. Mesh refinement around the coaxial probe ensures accurate inner electric field and S-parameter results.
This note models a WR-62 horn loaded with bi-omega particles to create a self-filtering antenna centered at 12.6 GHz. Scattering-parameter simulations show a sharp S11 notch and close agreement with measured data, while field plots reveal how the particle slab shapes the passband.