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Rapid prediction method for impact of spaceborne microstrip antenna array thermal deformation on electrical performance

A microstrip array and prediction method technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem that the influence of the electrical performance of the microstrip array antenna cannot be accurately estimated, shorten the development cycle, reduce The effect of development costs

Inactive Publication Date: 2015-05-13
XIDIAN UNIV
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Problems solved by technology

This method only considers the position error of each deformed microstrip radiating unit when processing the deformation data of the array, and ignores the structural deformation and pointing deflection of each microstrip radiating unit itself. performance impact

Method used

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  • Rapid prediction method for impact of spaceborne microstrip antenna array thermal deformation on electrical performance
  • Rapid prediction method for impact of spaceborne microstrip antenna array thermal deformation on electrical performance
  • Rapid prediction method for impact of spaceborne microstrip antenna array thermal deformation on electrical performance

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Embodiment Construction

[0060] The present invention will be further described below in conjunction with the accompanying drawings and embodiments

[0061] refer to figure 1 , the present invention is a rapid prediction method for the influence of thermal deformation of space-borne microstrip array antenna on electrical performance, and the specific steps are as follows:

[0062] Step 1, determine the geometric model parameters, material properties and electromagnetic working parameters of the spaceborne microstrip array antenna.

[0063] 1.1. The geometric model parameters of the microstrip array antenna are determined by the front shape and size of the spaceborne microstrip array antenna, including the antenna aperture, that is, the length L in the array (x, y direction) x and width L y , the number of rows M, the number of columns N of the antenna elements in the x and y directions and the spacing d of the antenna elements in the x and y directions x ,d x ,like image 3 shown;

[0064] 1.2. ...

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Abstract

The invention discloses a rapid prediction method for the impact of spaceborne microstrip antenna array thermal deformation on electrical performance. The rapid prediction method includes 1), determining geometric model parameters, material attributes and electromagnetic parameters of an antenna; 2), establishing a finite element model of an antenna structure, determining constraint conditions and calculating array thermal deformation of the antenna; 3), calculating structural deformation, center node offset and pointing deflection of antenna elements in the array antenna under the thermal-load environment; 4), calculating radiation pattern function of the microstrip antenna elements; 5), calculating spatial phase difference and actinal surface phase difference of every two neighboring antenna elements; 6), establishing a spaceborne microstrip array antenna electromechanical coupling model and drawing an antenna radiation field direction graph; 7), analyzing the impact of the thermal deformation of the antenna structure under the thermal-load environment on antenna radiation performance. The impact of the thermal deformation of the antenna structure on the antenna radiation performance can be evaluated rapidly, so that thermal design and structural design of the antenna are guided, development cost is reduced, and development cycle is shortened.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a method for rapidly predicting the influence of thermal deformation of a space-borne microstrip array antenna on electrical performance. Background technique [0002] With the rapid development of spaceborne antennas, the requirements for antenna performance such as multi-function, multi-band, long-distance, and high-power are getting higher and higher. Due to the increasing demand for satellite communication data transmission capacity, the original small-diameter low-gain antenna can no longer meet the application requirements. The use of spaceborne array antennas is one of the ways to solve the above problems. It not only overcomes the problems of large inertia, slow speed, and relatively low reliability during mechanical scanning of spaceborne reflector antennas, but also has more design freedom. Such as linear array, planar array, conformal array, etc., can wel...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 王从思王艳韩如冰段宝岩王伟朱敏波黄进保宏毛静
Owner XIDIAN UNIV
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