Method for designing array antenna with circular aperture field distribution based on Sinc function
A technology of array antenna and design method, which is applied in the direction of antenna, antenna array, electrical components, etc., can solve the problem of low efficiency of array implementation, and achieve the effect of avoiding random optimization algorithm, good symmetry, and fast beamforming
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[0035] Such as Figure 4 As shown, a concentric circle array layout structure composed of three concentric rings is adopted. There are 4 antenna units A1 on the innermost concentric ring, 8 antenna units A2 on the middle concentric ring, 16 antenna units A3 on the outermost concentric ring, R 1 , R 2 , R 3 are the radii of the innermost circle, the middle circle, and the outermost circle of concentric rings, respectively.
[0036] Such as figure 2 As shown, where P is the internal weighting parameter, the abscissa is the radial coordinate of the normalized radius a, and the y-coordinate is the magnitude of the aperture field, the internal weighting parameter P is 0.5, 2.5, 4.1, 4.5, 6.5, respectively Transform Weighted Quasi-Sinc Function The aperture field distribution of figure 2 As shown, the aperture field distribution is rotationally symmetric about the aperture center. Using circular aperture field distribution and far-field radiation Relationship,
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