Arrangement Optimization Method of Quasi-periodic Director Arrays
Quasi-periodic electromagnetic metal arrays have been successfully applied in various types of electronic devices,such as airborne rotating dome antennas,to enhance electromagnetic radiation performance.Compared to periodic arrays,quasi-periodic arrays are no longer constrained by periodicity,which significantly increases their design freedom.However,this also leads to a larger scale of descriptive parameters for the arrangement form,which are mutually independent.Furthermore,in the arrangement optimization of quasi-periodic arrays,there exists irregular coupling effects among individual elements,which vary with changes in the arrangement form.This irregular and varying coupling effect must be rigorously considered during the iterative process of arrangement optimization to achieve precise design of performance.This paper presents an arrangement optimization method based on the geometric movement of array elements and considering the variable coupling effect for quasi-periodic arrays,and applies it to solve the arrangement of quasi-periodic director arrays.Numerical examples demonstrate that through the collaborative optimization of the dimensions and positions of individual elements within the director array,the performance of the antenna radiation beam can be enhanced.
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