Electromagnetic metasurface design method based on support vector machine algorithm

Abstract

The invention discloses an electromagnetic metasurface design method based on a support vector machine algorithm, and the method comprises the steps: building and training an auto-encoder and an artificial bee colony support vector machine model through a group of samples according to the relationship between a unit structure of a metasurface and electromagnetic characteristics, wherein the reflection amplitude curve is input, and the structural matrix of the metasurface is output; and inputting the design target of the reflection amplitude curve into the trained auto-encoder and artificial bee colony support vector machine model to generate a metasurface unit structure. The design speed is remarkably increased, and the efficiency is remarkably improved; the design is automatic; a result is directly obtained through the metamaterial and the design target of the metasurface, related professional knowledge of an electromagnetic field is not needed, an engineer can focus on the function of the metasurface more, and the design process does not need to be concerned.

Description

technical field [0001] The invention relates to the technical field of electromagnetic metasurface design, in particular to an electromagnetic metasurface design method based on a support vector machine algorithm. Background technique [0002] The electromagnetic metasurface is an artificial material formed by periodically / aperiodically arranging macroscopic basic units with specific geometric shapes in a two-dimensional plane, or implanting them on the surface of a matrix material. Artificial electromagnetic metasurfaces can provide unprecedented methods to exert powerful control over the propagation direction, polarization mode and phase of electromagnetic waves. So many exotic functions can be realized, such as holography, perfect absorption, vortex beam generation, flat lens and some other functional interfaces. Due to their numerous unique properties, metasurfaces have attracted great attention from engineers and researchers. [0003] In the existing technology, the d...

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Problems solved by technology

[0003] In the existing technology, the design of metasurface usually needs to go through the process of model establishment, parameter scanning and optimization, which makes the design of metasurface time-consuming and computational resources, which not only reduces the design speed, but also reduces the design efficiency; moreover, there is no electromagnetic field and electromagnetic wave foundation It is difficult for engineers to directly design artificial electromagnetic materials that meet the requirements

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