Dual-polarized substrate-integrated beam steering antenna

An antenna for transmission of a radio-frequency (RF) wave, the antenna comprising:

• a stack-up structure having:
• a first control layer;
• a second control layer being approximately parallel to the first control layer;
• a first parallel-plate waveguide and a second parallel-plate waveguide located between the first control layer and the second control layer, the first parallel-plate waveguide and the second parallel-plate waveguide being approximately parallel to each other and to the first control layer and the second control layer;
• and
• a plurality of through vias operatively connecting the first control layer and the second control layer to center RF and DC ground planes;
• a first central port located on the first control layer and a second central port located on the second control layer, the first central port being configured to radiate the RF wave into the first parallel-plate waveguide, and the second central port being configured to radiate the RF wave into the second parallel-plate waveguide;
• vertical-polarization peripheral ports integrated with the first control layer and configured to radiate the RF wave in vertical polarization from the first parallel-plate waveguide;
• and
• horizontal-polarization peripheral ports integrated with the second control layer and configured to radiate the RF wave in horizontal polarization from the second parallel-plate waveguide, each one of the vertical-polarization peripheral ports being collocated with one of the horizontal-polarization peripheral ports such that they cross each other.