In this paper, H-plane horn antenna based on double ridge-gap waveguide (RGW) technology is designed for satellite applications at 13.5 GHz. The double RGW surfaces are based on AMC-AMC parallel plate ...

• C: refers to the angle between the shear reinforcement and the longitudinal axle of the beam. 90 represents beams with vertical stirrups and 45 represent the beam with inclined stirrups.