Analysis method for transmission and reflection coefficients of wire mesh of mesh antenna

An analysis method for transmission and reflection coefficients of a wire mesh of a mesh antenna, comprising:

• step 1, inputting model parameters and simulation parameters of the wire mesh;
• step 2, obtaining coordinate points of a minimum repeating unit of the wire mesh, and determining a minimum repeating unit curve P00 of the minimum repeating unit, comprising:
• step 2.1, deriving coordinate points A1 of a single inclined coil of the wire mesh according to the model parameters in the step 1;
• step 2.2, obtaining the coordinate points of the minimum repeating unit of the wire mesh according to the coordinate points A1 of the single inclined coil obtained in the step 2.1 and an organization structure P of the wire mesh of the model parameters in the step 1;
• and
• step 2.3, solving the minimum repeating unit curve P00 of the wire mesh according to the coordinate points of the minimum repeating unit obtained in the step 2.2;
• step 3, performing vector superposition on the minimum repeating unit curve P00 obtained in the step 2 to obtain an organization structure curve P of the organization structure of the wire mesh;
• step 4, discretizing the organization structure curve P of the organization structure of the wire mesh obtained in the step 3, to extract a coordinate point elec_node of an electromagnetic analysis periodic unit of the wire mesh;
• wherein the step 4 specifically comprises:
• step 4.1, assuming that a left boundary of the electromagnetic analysis periodic unit of the wire mesh is X1 and a lower boundary of the electromagnetic analysis periodic unit of the wire mesh is y1, and determining a right boundary X2 of the electromagnetic analysis periodic unit and an upper boundary y2 of the electromagnetic analysis periodic unit by formulas 4.1 and 4.2:
• X2=X1+Rx (4.1),
• y2=y1+Ry (4.2);
• step 4.2, discretizing the organization structure curve P of the organization structure of the wire mesh to obtain a coordinate point node for describing the organization structure of the wire mesh, and determining, based on the coordinate point node, the coordinate point elec_node of the electromagnetic analysis periodic unit of the wire mesh by a formula 4.3:
• elec_node=node(x1<xi<x2,y1<yi<2) (4.3);
• step 5, establishing, based on the coordinate point elec_node of the electromagnetic analysis periodic unit of the wire mesh obtained in the step 4, a solid model of the electromagnetic analysis periodic unit of the wire mesh, and obtaining a reflection coefficient S11 and a transmission coefficient S21 of the wire mesh by analyzing the solid model;
• and
• step 6, determining a reflection coefficient S11 and a transmission coefficient S21 of the wire mesh after deformation, comprising:
• step 6.1, based on the coordinate point node for describing the organization structure of the wire mesh described in the step 4, using an ANSYS software to:
• use a beam element of Beam188 to simulate the wire mesh, define a shape and a size of a section of the beam element, and establish a finite element model of the wire mesh by using a BSPLIN command, set a contact type of the wire mesh as adhesive contact, apply a boundary condition and a load to the wire mesh and perform static analysis on the wire mesh, to thereby obtain a coordinate point deformtion_node for describing an organization structure of the wire mesh after deformation;
• and
• step 6.2, repeating the steps 4 and 5 based on the coordinate point deformtion_node for describing an organization structure of the wire mesh after deformation obtained in the step 6.1, to obtain a solid model of an electromagnetic analysis periodic unit of the wire mesh after deformation, and the reflection coefficient S11 and the transmission coefficient S21 of the wire mesh after deformation.