Frequency-Scan Array Antennas of Three-Dimensional Surveillance Radars

The development of frequency-scan array antennas of three-dimensional air surveillance radars is briefly analyzed. According to the materials of Russian and foreign open sources a review of such antennas and the analysis of technical solutions for their implementation in the different frequency bands are presented. The basic types of used frequency-scan antennas, starting from simplest to monopulse are considered. Some of required parameters and the implemented characteristics are given.