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High pointing accuracy design method of circularly polarized mesh antenna based on electromechanical integration optimization

A technology of electromechanical integration and precision design, applied in the field of radar, it can solve problems such as the structural factors of mesh antenna that cannot be considered

Active Publication Date: 2019-02-22
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method also cannot consider the structural factors of the mesh antenna

Method used

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  • High pointing accuracy design method of circularly polarized mesh antenna based on electromechanical integration optimization
  • High pointing accuracy design method of circularly polarized mesh antenna based on electromechanical integration optimization
  • High pointing accuracy design method of circularly polarized mesh antenna based on electromechanical integration optimization

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Embodiment Construction

[0116] Attached below figure 1 , the specific embodiment of the present invention is described in further detail:

[0117] Step 1. Input the structural parameters provided by the user including circularly polarized mesh antenna aperture, focal length, offset distance, minimum distance between front and rear mesh surfaces, cross-sectional area of ​​cable elements, Young’s modulus of elasticity, and allowable value of cable tension, including Operating wavelength, feed source parameters, requirements for the lower limit of the spindle direction coefficient, and electrical parameters required for pointing accuracy, where the feed source parameters include the feed source type, feed source pattern function, and feed source total radiated power;

[0118] Step 2: Taking the center of the projection aperture of the circularly polarized mesh antenna as the starting point of patch division, mesh the circularly polarized mesh antenna under ideal conditions, and use the result of mesh d...

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Abstract

The invention discloses a circular polarization mesh antenna highly-directional precision design method based on electromechanical integrated optimization. The method comprises the specific steps that 1, circular polarization mesh antenna structural parameters and electrical parameters are input; 2, circular polarization mesh antenna structural information is obtained; 3, a structural balance equation is constructed; 4, cable tension optimization design is performed; 5, an electromechanical integrated optimization model is built; 6, structural and electromagnetic sensitivity is calculated; 7, a Hessian matrix is calculated; 8, the cable section length is updated; 9, structural and electromagnetic reanalysis is performed; 10, whether convergence conditions are met or not is judged; 11, a circular polarization mesh antenna structural design scheme is output. On the basis of the concept of electromechanical integrated optimization, the structural and electromagnetic sensitivity analyzing method is adopted, influences of cable mesh structural parameters on the antenna electrical performance are considered, and circular polarization mesh antenna highly-directional precision design is achieved from the aspect of electromechanical integration.

Description

technical field [0001] The invention belongs to the technical field of radar, and in particular relates to a high pointing precision design method of a circularly polarized mesh antenna based on electromechanical integration optimization in the field of radar antennas. Background technique [0002] Circularly polarized antennas are often used in spaceborne antenna designs. Due to the unique structural characteristics of the spaceborne offset reflector antenna, the far-field pattern of the offset reflector antenna will produce a beam tilt phenomenon under circular polarization excitation. As the mesh antenna is gradually applied to the spaceborne antenna due to its light weight and small volume, the beam tilt phenomenon will also appear in the mesh antenna excited by circular polarization. This will seriously affect the pointing accuracy of circularly polarized mesh antennas, which in turn will affect the applications of mesh antennas in satellite communications, deep space ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 张树新杜敬利段宝岩杨东武张逸群李申杨癸庚宗亚雳
Owner XIDIAN UNIV
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