The design for peak sidelobe level of plat end-fire antenna array powered by uncorrelated signal

In order to get high directivity for plat end-fire antenna, the space of the array should be increased and best result can be got on 1.5 wavelengths, but gating lobe is produced, so sparse array is adopted. Extending the sparse constraints of regular grid from 0.5 wavelengths to 1.5 wavelengths, by simulation and analyse this kind of array is found to be inconsistent with the theory of antenna arrays with constraint of 0.5 wavelengths, high sidelobe level produced simultaneously to eliminate gating lobe cannot be solved. Array antenna powered by uncorrelated signal is proposed, pattern synthesis with constraints of the minimum element spacing is 1.5 wavelengths is researched, the problem of with lower maximum relative sidelobe level is solved effectively. The computer simulation results confirm the validity of this method.