Carrier antenna structure meshing method based on method of moment (MOM) for triangular vector basis function

A vector basis function and grid division technology, applied in the field of carrier, can solve problems such as large amount of calculation, multiple iterations, and no consideration of subdivision, so as to achieve small amount of calculation, accurate control of grid size, and improved calculation accuracy. Effect

Inactive Publication Date: 2010-11-03
XIDIAN UNIV
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Problems solved by technology

[0009] To sum up, there are the following problems in the existing meshing: (1) There is no meshing method for the triangular vector basis function method of moments; (2) The existing finite element meshing methods focus on shape optimization and Gradient size changes, and the grid size cannot be accurately controlled; (3) The existing method of moments meshing does not consider the situation that the edge curvature discontinuity should be finely divided; (4) The mesh needs multiple iterations, and the calculation amount is relatively large. Big

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  • Carrier antenna structure meshing method based on method of moment (MOM) for triangular vector basis function
  • Carrier antenna structure meshing method based on method of moment (MOM) for triangular vector basis function
  • Carrier antenna structure meshing method based on method of moment (MOM) for triangular vector basis function

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[0096] Utilize the present invention to Figure 16 The simulated carrier antenna model shown is divided into simulation grids, and the carrier antenna model is composed of 13 quadrilateral patches, 10 triangular patches and 4 antennas.

[0097] Under the condition that the antenna transmission frequency is 100MHz, that is, the wavelength λ=3 meters, the model is divided into the following grids:

[0098] First, edge judgment is performed on each side of each polygonal patch of the carrier antenna model. After the edge judgment, there are 70 edges and 12 non-edges in the carrier antenna model. The edge is discrete according to the edge judgment results. , for edges, the distance between discrete points is not greater than 0.3 meters, and the distance between non-edge discrete points is not greater than 0.375 meters;

[0099] Secondly, for each polygonal patch in the model without considering the antenna, carry out a preliminary mesh division of a single patch and generate a unif...

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Abstract

The invention discloses a carrier antenna structure meshing method based on a method of moment (MOM) for a triangular vector basis function, which mainly the problems that the traditional meshing method does not meet the requirements of the MOM for a triangular vector basis function, can not accurately control the mesh size, can not evenly divide parts, the curvature of which is discontinuous, and needs repeated iterations to generate uniform meshes. The meshing method comprises the following steps of: firstly, dispersing edges of each patch of a carrier antenna model; secondly, preliminarily meshing each patch and generating uniform meshes under the condition of not considering the antenna; then, carrying out fine adjustment on the meshes at the connection points of the antenna and constructing one regular hexagon by using each connection point of the antenna as the center; and finally, carrying out differential division on the regular hexagon and all triangles which use the connection points of the antenna as common vertexes to obtain triangularized meshes meeting the requirements of MOM for a triangular vector basis function. The method has the advantages of reliability, high computing speed, uniform generated meshes and good quality of unit shape, and can be used for the electromagnetic calculation of the carrier antenna structure.

Description

technical field [0001] The invention belongs to the technical field of carrier antennas, and relates to a grid division method for numerical analysis of electromagnetic fields, in particular to a grid division method for carrier antenna structure analysis using triangular vector basis function moment method, which cooperates with the moment method It can be used for antenna isolation, antenna on-line current, surface current on carrier surface, space field strength and direction diagram calculation of vehicle-mounted, airborne, ship-borne, ship-borne, and space-borne communication systems to guide and evaluate electromagnetic compatibility design. Background technique [0002] Vehicle-mounted, airborne, ship-borne, ship-borne and satellite-borne communication systems can all be attributed to the carrier antenna structure. The carrier can be divided into land-based vehicle body, space-based airframe, sea-based ship (ship) body, and space-based star body based on different veh...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 许社教邱扬张佳峰车莉袁军屈会雪
Owner XIDIAN UNIV
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