Numeric simulation of W band lens coupled clover leaf antenna for MM wave imaging

Numerical simulation of far field patterns of integrated lens antenna consisting of planar wideband clover leaf shaped dipole antenna is carried out in the presented work. W band performance of planar antenna is obtained by FEM based HFSS shows wide band behavior, symmetric patterns and circular polarization. Lens mounted feed´s characterization is modeled using ray tracing inside lens and diffraction theory is used to calculate far field outside lens. Lens coupled clover leaf antenna´s performance obtained by proposed hybrid method showed reduction of substrate mode loss and resulting in high broadside gain as well as directivity. Lens dimension´s optimization is also carried out in this work.