Investigations on the Performance of Isophoric Linear Sparse Array Antenna with Low Sidelobe Level due to Non-Isotropic Radiators

This paper presents design of isophoric (equally fed) linear sparse array antennas (LSA) using particle swarm optimizer (PSO). The synthesized LSA is electromagnetically modelled using method of moments (MOM) based commercial em solver using a practical radiator to study effect of practical constraints such as mutual coupling, finite array edges and realistic element pattern on the LSA performance. The investigations into the performance of the LSAs brings out the various design guidelines and their applicability to the various domains.