Design of a Transverse Slot Array in Groove Gap Waveguide using Horns at 28 GHz Band

We design an array of transverse slots cut out from the broad wall of a groove-gap waveguide, with periodic spacing between slots of a guided wavelength at 28 GHz that is centered about an important millimeter-wave band. External horns are brought upon to address the problem of grating lobes. The simulations have been carried out for operation in the designed frequency band from 27.676 to 28.652 GHz while preserving the conditions for port matching. This antenna solution lends itself to many applications within this millimeter-wave band.