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Narrow-Beam Waveguide Antenna for Surface Movement Radar

The paper describes the development of the narrow-beam waveguide antenna for X-band solid-state surface movement radar. Combination of technical solutions has allowed to provide high-quality technical and operational characteristics of developed antenna. The antenna, which consists of a flared horn and a 256-element linear waveguide antenna array with corporate feed, forms a directional pattern at 9000-9450 MHz band with widths of 0.35° in horizontal plane and 11° in vertical plane, a maximum side lobe level -25 dB and a realized gain at least 38 dB. The electrodynamic model numerical simulation results and measurement results of antenna radiation patterns on the near field test stand are discussed. Finally, the design and issues of technological implementation of the proposed antenna are considered.