A Novel Metasurface-Based Monopulse Antenna with Improved Sum and Difference Beams Radiation Performance.

This paper proposes a novel metasurface-based monopulse antenna. A multimode pyramidal horn with four ports is selected as the feed of the proposed monopulse antenna. The 3-dB couplers and the optimized waveguide phase shifters are employed to design the monopulse comparator.