Surface conformal array design method based on transformation optics and neural network algorithm

Abstract

The invention discloses a plane conformal array design method based on transformation optics and a neural network algorithm, and relates to an artificial electromagnetic device. That is, a planar array optimization algorithm is applied to the conformal plane array through a transformation optical method. In general speaking, the method comprises the following steps: firstly, obtaining the array element position and excitation of a planar array through a planar array algorithm, then designing a three-dimensional lens by using quasi-conformal transformation in combination with boundary conditions, then solving the array element position of a conformal array through a neural network algorithm, and finally, placing the three-dimensional lens on the conformal array. Wherein the transformation optical algorithm solves the problem that an optimization algorithm of a planar array is applied to a conformal planar array antenna, and the neural network algorithm solves the problem that the position of an antenna array element is solved from a planar array to a conformal array. Through the operation, the planar array optimization algorithm is equivalently applied to the conformal planar array, the design method of the conformal planar array is expanded, the design cost of the conformal planar array is saved, and the flexibility and applicability of the conformal antenna array are improved.

Description

technical field [0001] The invention relates to the field of artificial electromagnetic devices, in particular to a method for designing surface conformal arrays based on transformation optics and neural network algorithms. Background technique [0002] As the core component of receiving and sending electromagnetic waves in the radio system, the antenna plays an important role in the modern information society. With the continuous development of human society and science and technology, the requirements for antenna equipment are getting higher and higher. This requirement is reflected upwards in aircraft, rockets and other equipment, and downwards in living furniture and personal wearable devices. In order to obtain the conceived pattern of the planar array antenna, the antenna planar algorithm designed is generally the optimization algorithm of the planar array. These algorithms have a common premise that they must be applied to the planar array. However, these planar arr...

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Problems solved by technology

Moreover, for large-scale conformal arrays, it is difficult to determine the array element position on the conformal antenna (physical space) after adding the artificial electromagnetic device-lens. In the past, the value of the Laplace equation combined with boundary conditions was obtained. solution (dividing the grid) to find the approximate position, but doing so is a complex and repetitive process for designing a conformal array, and the results are not accurate. It is hoped that the neural network algorithm can be used to improve this process

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