Analytical methods for optimizing the signal-to-interference plus noise rat
io in monopulse antenna arrays with simultaneous and separate beamforming b
ased on extremal properties of the Hermitian form ratio are proposed. Bores
ight stabilization techniques are considered. The effect of higher-order mo
des on the characteristics of the optimized monopulse antenna array is anal
yzed by the example of planar waveguide arrays with dielectric plugs excite
d by the H-1 mode.