“…Although they have promising features, such as low profile, low cost, and fabrication ease, their low-power handling capacity and high losses often make them less suitable for marine radar [ 18 , 19 , 20 ]. Consequently, the slotted waveguide array (SWA) antennas [ 21 , 22 , 23 , 24 , 25 ], based on the pioneering work published by Elliot [ 26 , 27 , 28 ], are widely employed in marine radar applications. This is because of their high-power handling capacity, low losses, and good phase stability.…”