Beam Pattern Analysis Of 1.5-D Sparse Array For Millimeter-Wave Imaging Systems

In this paper, we analysis the beam pattern of a millimeter-wave 1.5-D sparse array with orthogonal element locations, which its general concept was introduced in [1]. We show that the side-lobe level (SLL) is related to the sparsity of the array. Moreover to improve the quality of reconstruction, the side-lobe level must be low. Measured results at 30 GHz show that the quality of reconstruction is improved by controlling the SLL.