Synthesis of low sidelobe planar antenna arrays with time modulation

In this paper, a new method is presented for the synthesis of low sidelobe planar antenna arrays with time modulation. The generalized Tseng-Cheng distributions in conventional planar arrays are extended to the synthesis of time modulated planar arrays. The sideband levels of the time modulated planar arrays are effectively suppressed using the differential evolution (DE) algorithm. Numerical results show that ultra-low sidelobes can be synthesized for time modulated planar arrays, with very low dynamic-range ratio, low sideband levels and minimal reduction in directivity.