RF filter
RF tunable cavity filter example.Tuning is achieved by modifying the

Tilted Horn Antenna
Tilted Horn Antenna Analysis.The model is built in SolidWorks, and analysed

Dielectric Resonator Filter
Half model of dielectric resonator (DR) filter using HFWorks

TDR of connectors
Time Domain Reflectometry (TDR) of connectors using HFWorks