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In this paper, the variation of side lobe level (SLL) of ‘optimized uniformly excited time-modulated linear antenna array’ (OUE-TMLAA) with different number of antenna elements is presented. To realize the optimized array patterns of the arrays, sideband levels (SBLs) is suppressed to below −30 dB and the increase on first null beam width (FNBW) is restricted within 35% of that of the ‘uniformly excited...
In several applications such as wireless communication, radar; shaped beam patterns are used to radiate power in a desired sector of region while suppressing the power towards the other direction to avoid interferences. This paper introduces a new technique to synthesizing flat-top shaped power pattern in time-modulated unequally spaced linear arrays (TMUSAs). Since, TMUSA synthesis problems are multimodal,...
In this paper, a cosecant squared shaped beam pattern is synthesized from a uniformly spaced but nonuniformly excited linear antenna array where the uniform spacing of the array elements is considered as half of the desired signal wavelength. The shaped beam pattern is synthesized for the angular beam width of 32° by reducing the side lobe level (SLL) to −20.06 dB and almost without any ripple in...
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