A ridged cross-junction power divider for small blockage and symmetrical slot arrangement in the center-feed single-layer slotted waveguide array

We have proposed a ridged cross-junction power divider for the feed waveguide in a center-feed single-layer waveguide slot array antenna. This feed waveguide is advantageous in terms of reducing blocking area and forming a symmetrical slot array to obtain high isolation. Furthermore, reflection is less than -20dB at the design frequency. The calculated sidelobe level of a ridged cross-junction model is almost -13 dB in the H-plane at 25.3GHz.