Luu Duc, D.T., Ha Huy Dung, Luong Van Trinh, Cao Viet Linh, Doan Van Tung and Nguyen Duc Thanh 2026. Research and design of a waveguide sum-difference comparator for monopulse radar applications. Journal of Military Science and Technology. 110, 110 (Apr. 2026), 55–62. DOI:https://doi.org/10.54939/1859-1043.j.mst.110.2026.55-62.