Monopulse antennas for radar seekers

The paper presents some most important design issues of antennas with modelled monopulse radiation pattern in both azimuth and elevation, especially of dielectric substrate microstripe antenna structures. An approach to optimisation of the antenna patterns is discussed and an example of circular antenna array solution is presented. The issue of feeding such antenna arrays is discussed. The solution of decomposition the antenna array into a set of sub-arrays is also proposed. An implementation of the Σ/Δ circuit and relevant antenna array radiation pattern are presented.