Irregular subarray arrangement optimization method capable of ensuring ultra-large scanning angle
An optimization method and irregular technology, applied in design optimization/simulation, antenna arrays, and devices for manufacturing antenna arrays, etc., can solve the problems of small scanning angle, complex optimization problems, poor applicability, etc., to achieve low side lobes, reduce feedback Electrical complexity, cost saving effect
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[0042] Consider an irregular array, the size of the array is M×N=36×36, consider the irregular sub-array is composed of 4 array elements, so there are 36×36 / 4=324 sub-arrays, the antenna elements in the sub-array The excitation amplitude and excitation phase are the same. The reference array is a Chebyshev plane array with 36×36=1296 elements.
[0043] Other main parameters are as follows:
[0044] d=d x =d y =0.5λ
[0045] The first step is to optimize the arrangement of irregular sub-arrays through commercial solvers, such as image 3 , An irregular array with a total number of 324 sub-arrays is obtained. The information entropy of the array is H=5.1425, where H r And H c Respectively:
[0046]
[0047]
[0048] Because H r Represents the scanning ability of the elevation plane, H c Represents the scanning ability of the azimuth plane, H r And H c The value of is basically the same, indicating that the scanning performance of the array on the elevation plane and the azimuth plane i...
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