Flat-Top Beam Shaped Phased Array Design Using Multi-Beam Superposition

Several useful techniques are in use to shape Phased Array antenna patterns with optimized side lobe ratio (SLR) and wide beamwidth. The design commences with a spoiled beam Phased Array. The beam weights for the spoiled array can be obtained without using numerical optimization techniques inside an EDA tool. The beam flattening and array thinning are accomplished directly from windowing functions. A new flat-top beam shape design procedure is proposed and validated. Various studies are performed to account for the effects of different window functions, component variability, and beam scanning including a two-way beam pattern radar application.