Element selection for optimized multiwide nulls in almost uniformly excited arrays
JR Mohammed - IEEE Antennas and Wireless Propagation …, 2018 - ieeexplore.ieee.org
IEEE Antennas and Wireless Propagation Letters, 2018•ieeexplore.ieee.org
In this letter, a novel multiwide null steering method for uniformly excited large arrays by only
adjusting the amplitude and phase of a relatively small number of elements on the extremes
of the array is presented. These adjustable elements are optimized by means of genetic
algorithm (GA) to construct a specific cancellation pattern that can be used to produce
multiple wide nulls in the radiation patterns of the uniformly excited linear arrays. To simplify
the feeding network as well as to increase the convergence speed of the optimization …
adjusting the amplitude and phase of a relatively small number of elements on the extremes
of the array is presented. These adjustable elements are optimized by means of genetic
algorithm (GA) to construct a specific cancellation pattern that can be used to produce
multiple wide nulls in the radiation patterns of the uniformly excited linear arrays. To simplify
the feeding network as well as to increase the convergence speed of the optimization …
In this letter, a novel multiwide null steering method for uniformly excited large arrays by only adjusting the amplitude and phase of a relatively small number of elements on the extremes of the array is presented. These adjustable elements are optimized by means of genetic algorithm (GA) to construct a specific cancellation pattern that can be used to produce multiple wide nulls in the radiation patterns of the uniformly excited linear arrays. To simplify the feeding network as well as to increase the convergence speed of the optimization algorithm, the excitations of the majority of the array elements are kept constant. Results of applying the GA to optimize 10 out of 100 elements are shown.
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