Array antenna electromagnetic characteristic solving method based on finite element region decomposition

Abstract

The invention provides an array antenna electromagnetic characteristic solving method based on finite element region decomposition, and aims to give consideration to the calculation precision, solvingcapability and efficiency of solving the electromagnetic characteristics of a large array antenna at the same time, and the method comprises the following specific steps: (1) creating a unit geometric model; (2) setting materials and boundary conditions; (3) generating unit grids; (4) translating and copying the unit grids; (5) replacing the material and boundary attributes of the non-structuralunit; (6) solving by adopting a finite element region decomposition method; and (7) calculating electromagnetic characteristics. According to the invention, a finite element region decomposition method is applied to electromagnetic characteristic solution of the array antenna, so that the difficulty in geometric modeling and mesh generation of the large array antenna is reduced, and both the solution precision and the solution efficiency are considered.

Description

technical field [0001] The invention belongs to the technical field of antennas, and further relates to a method for solving electromagnetic characteristics of an array antenna based on a finite element method and an area decomposition algorithm in the technical field of electromagnetic fields and microwaves. By solving the electromagnetic characteristics of the array antenna, the invention can be applied to design the array antenna with any shape. Background technique [0002] Array antennas are a very typical electromagnetic periodic structure problem. Periodic structures are periodic arrays formed by the arrangement of the same units according to certain rules. It has a wide range of applications in the fields of electromagnetic fields and microwave technology, such as array antennas, frequency selective surfaces, and photon bands. Gap structures and metamaterials, etc. With the continuous growth of application requirements, the electromagnetic periodic structure present...

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Problems solved by technology

[0006] The purpose of the present invention is to address the defects in the above-mentioned prior art, and propose a method for solving the electromagnetic characteristics of array antennas based on finite element domain decomposition, which is used to solve the problem that the calculation accuracy and solution efficiency cannot be guaranteed at the same time when solving the electromagnetic characteristics of irregular array antennas The problem

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