A method and device for simulating and selecting parameters of a metamaterial structural unit

Abstract

The invention provides a metamaterial structure unit parameter simulation selection method and a metamaterial structure unit parameter simulation selection device. The metamaterial structure unit parameter simulation selection method comprises the following steps: obtaining geometrical parameters of a structure unit and value ranges of the geometrical parameters, dividing the geometrical parameters in to a first area and a second area according to the value ranges of the geometrical parameters, performing orthogonal design for geometrical parameters in the first area to obtain a first test set, and performing uniform design for geometrical parameters in the second area to obtain a second test set. According to the metamaterial structure unit parameter simulation selection method and the metamaterial structure unit parameter simulation selection device, parameters of a structure unit corresponding to metamaterial electromagnetic properties which are in accordance with an initial test hypothesis can be found quickly and accurately while the spatial 'representativeness' selected in a test point is guaranteed, the number of test times is reduced, working efficiency is improved, and test cost is saved.

Description

technical field [0001] The invention relates to the field of metamaterials, in particular to a method and device for selecting parameters of metamaterial structural units by simulation. Background technique [0002] Metamaterials are artificial materials composed of periodic or non-periodic arrangements of subwavelength macroscopic structural units with specific geometric shapes, and their medium properties depend on the structure and spatial distribution of their structural units. [0003] Measuring the electromagnetic properties of metamaterial structural units is an important link in the metamaterial design process. How to select a certain size metamaterial structure unit for electromagnetic simulation measurement is a problem that must be solved in the whole design process. The geometric shape information of a single microstructure unit is described by a set of parameters, and the values ​​of the parameters represent the size of its shape. Within a reasonable range of ...

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Problems solved by technology

In order to optimize the experimental steps, the commonly used method is to fine-tune each parameter of the structural unit within the allowable range by relying on the accumulated experimental experience and the basic understanding of electromagnetic principles. This method is based entirely on experience. , and it is impossible to predict the time required for the entire exploration process, it is difficult to directly optimize the experimental steps; the commonly used orthogonal experimental design requires the same number of experiments for each factor and each level, so the experimental steps derived from this are many and cumbersome. Arranging so many simulation experiments will undoubtedly be too time-consuming, labor-intensive, and resource-intensive; and according to the uniform experimental design, although the experimental steps can be reduced, the information expression ability of the uniform experimental design in the edge area is not good. The information is more important than the middle part and at the same time requires a small number of experiments, the method cannot meet the experimental requirements

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