Wire Mesh Antenna Coefficient Analysis Under Tension Deformation
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Solution Overview
Problem
Current methods for analyzing the reflection and transmission performance of wire meshes in mesh antennas are limited by their use of approximate equivalent models, which result in errors and fail to account for deformation due to tension in the cable-net system, affecting the stability and accuracy of the antenna's profile.
Innovation Solution
An analysis method that establishes an accurate wire mesh model by inputting model and simulation parameters, determining the minimum repeating unit curve, performing vector superposition, discretizing the organization structure, and analyzing the solid model to calculate reflection and transmission coefficients before and after deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If approximate equivalent models (pore unit or strip unit) are used to analyze wire mesh, then the analysis process is simplified, but the calculation accuracy of reflection and transmission coefficients deteriorates
Solution Approach 1:
The wire mesh is divided into a minimum repeating unit that captures the essential structural characteristics. By segmenting the complex mesh structure into this representative unit, the analysis achieves both computational simplicity and high accuracy, resolving the contradiction between process complexity and calculation precision.
Solution Approach 2:
Instead of using simplified equivalent models that copy only certain aspects of the wire mesh, the invention creates an accurate geometric copy of the minimum repeating unit that preserves the true structural details. This copying approach maintains computational efficiency while achieving high calculation accuracy by faithfully representing the actual mesh geometry.
2Reliability
If tension in the cable-net system is considered, then the deformation of wire mesh is accounted for, but the analysis complexity increases
Solution Approach 1:
The deformation caused by tension is calculated in advance using finite element analysis, and the deformed geometry is obtained before performing electromagnetic analysis. This preliminary action separates the mechanical deformation calculation from the electromagnetic analysis, allowing the complex tension-deformation effect to be accounted for without significantly increasing the overall analysis complexity.
Solution Approach 2:
The invention introduces an intermediary step that bridges the mechanical tension analysis and electromagnetic analysis. The deformed geometry obtained from finite element analysis serves as an intermediary that accurately represents the wire mesh state under tension, enabling the electromagnetic analysis to account for deformation without directly coupling the complex mechanical and electromagnetic systems.
Data Source
AI summary
Provided is an analysis method for transmission and reflection coefficients of a wire mesh of a mesh antenna. The method mainly derives coordinate points of a minimum repeating unit of the wire mesh according to model parameters of the wire mesh; secondly, determines a minimum repeating unit curve of the wire mesh by periodic cubic spline curve interpolation, and determines an organization structure of the wire mesh by vector superposition; thirdly, discretizes an organization structure curve of the organization structure of the wire mesh, to extract a coordinate point of an electromagnetic analysis periodic unit of the wire mesh, and establishes a solid model of the electromagnetic analysis periodic unit of the wire mesh to realize the analysis of the transmission coefficient and the reflection coefficient of the wire mesh; and finally, determines the transmission coefficient and the reflection coefficient of the deformed wire mesh by static analysis.