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An electromechanical coupling model-based shaped reflector antenna electrical performance prediction method

A technology of electromechanical coupling and performance prediction, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., to achieve the effect of reducing the requirements of structural design and processing accuracy, reducing development costs, and shortening the development cycle

Active Publication Date: 2017-07-28
XIDIAN UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to address the coupling relationship between the structural displacement field and the electromagnetic field that is often ignored in the existing shaped reflector antenna analysis technology, and the influence of one aspect is considered separately, which leads to the mechanical failure of the shaped reflector antenna structure and thermal design. , electrical separation

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  • An electromechanical coupling model-based shaped reflector antenna electrical performance prediction method
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  • An electromechanical coupling model-based shaped reflector antenna electrical performance prediction method

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Embodiment Construction

[0041] The invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it is not used as a basis for any limitation on the invention.

[0042] Such as figure 1 As shown, a method for predicting the electrical performance of shaped reflector antennas based on the electromechanical coupling model, the specific steps are as follows:

[0043] Step 1, determine the antenna structure scheme

[0044] According to the structural parameters and material properties of the shaped reflector antenna, the antenna structure scheme is determined. The structural parameters of the shaped reflector antenna include the aperture and focal length of the shaped reflector antenna; the material properties of the shaped reflector antenna include the density and elastic modulus of the antenna back frame material and the shaped surface panel material.

[0045] Step 2. Establish a finite element model of the shaped reflector antenna structure

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Abstract

The invention provides an electromechanical coupling model-based shaped reflector antenna electrical performance prediction method. The method comprises the steps of determining a structure scheme of a shaped reflector antenna; building a finite element model of the structure of the shaped reflector antenna; calculating self-gravity deformation of the structure of the shaped reflector antenna; calculating impact terms of shaped surface error and feed source error of the shaped reflector antenna on antenna aperture field amplitude and phase position; calculating the electrical performance of the deformed shaped reflector antenna by using an electromechanical coupling model of the shaped reflector antenna; judging whether the result meets design requirements. The method can accurately analyze the influence of a gravity load on the structure of a shaped reflector antenna and achieve coupling analysis of the structure of a shaped reflector antenna and electric and magnetic fields. The method can analyze the influence of various kinds of structure error on working performance of an antenna, find out main structure factors, provide reasonable structure precision requirements according to actual requirements, shorten a development period and reduce development costs.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a method for predicting the electrical performance of a shaped reflector antenna based on an electromechanical coupling model. Background technique [0002] Shaped reflector antennas are widely used in many fields such as air search radar, ground airborne radar target tracking and satellite communication. When the working frequency band is high, structural factors have a great influence on the radiation performance of the antenna. The structural factors affecting the electrical performance of the shaped reflector antenna mainly include the surface error of the shaped reflector and the error of the feed source. The surface error of the shaped surface includes the surface deformation error of the shaped surface under the action of external loads, such as wind, vibration, and solar radiation, as well as the random error of the reflective surface generated during the manufacturing ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 王从思王守菲李素兰王伟许谦项斌斌米建伟朱诚蒋力陈卯蒸段宝岩王浩
Owner XIDIAN UNIV
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