A subdomain‐based effective method in using commercial software for designing uniform circular array radiating multiplex vortex waves

Abstract

For a dramatic reduction of the total cost occurring in the design of large‐scale uniform circular array (UCA) generating multiplex vortex waves, an effective method characterized by an over‐lapped domain decomposition strategy of using a commercial toolkit is proposed. In the present method, the time consuming, as well as memory cost, is relieved by the fact that the global analysis of large‐areal aperture consists of several parts corresponding to patches attached to a part of the substrate. Meanwhile, the accuracy is ensured by the fact that the majority of mutual coupling effects in the individual are counted. For validations of the efficiency and the accuracy, both numerical, and physical examples are conducted, where three antennas with 6, 10, and 16 elements arranged in UCAs are numerically analyzed. Numerical results show a great enhancement, especially for large‐scale UCA. Acceleration ratios are 2.93, 3.13, and 7.82 for 6, 10, and 16 elements, respectively. In addition, an exciting enhancement of 15.64 times for the 16‐element array is observed, which comes from the method equipped with a further simplification using the symmetry of structures.