Practical Design Considerations for Sparse Antenna Array Using Reflector Antenna with Continuously Adjustable Phase Center Displacement

Abstract

A new concept of designing sparse antenna array consisting of identical pencil-beam reflector antennas is proposed. The review of techniques of optimization of nonuniform planar array geometry. In order to reduce Side Lobe Level, the periodic law of antenna elements arrangement is destroyed due to different phase center displacement of reflector an antennas realized by changing direct of feed antenna main ben. Due to creating various asymmetric amplitude distributions of the field in the reflector aperture, it is possible to construct a non-uniformly spaced array with a known law of arrangement of their phase centers. Numerical examples are presented to show the high efficiency of the proposed technique.