A Sparse Concentric Ring Antenna Array Design with Wide Scanning and Low Sidelobe Level

This paper presents a deterministic synthesis methodology for sparse concentric ring antenna arrays using Bessel functions' approach. Few important design guidelines are brought out to design these antenna arrays. The electromagnetic tool, Ansys HFSS is used to carry out electromagnetic experiment to validate the design technique using a practical radiating element, cavity backed microstrip patch antenna. The design shows wide scan characteristics, low mutual coupling and low side lobe level with uniform excitations being fed to the array. The works is quite useful for phased array antenna applications.