Reflector antenna structure weighting optimization method for electrical performance
A technology of antenna structure and optimization method, applied in design optimization/simulation, geometric CAD, combustion engine, etc., can solve the problems of inability to guarantee the overall electrical performance of the antenna, incomplete description of far-field parameters, etc., and achieve the effect of improving accuracy
Active Publication Date: 2022-03-11
XIDIAN UNIV
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Problems solved by technology
Although this method can ensure the gain requirements of the antenna, it does not fully describe the far-field parameters because it does not involve the half-power lobe width and other electrical properties, and cannot guarantee the overall electrical performance of the optimized antenna.
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[0029] The embodiments and effects of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0030] refer to figure 1 , the implementation steps of the present invention are as follows:
[0031] Step 1, establish the finite element model of the reflector antenna.
[0032] According to the given reflector focal length f, caliber D, back frame beam, turntable, and basic parameters of the support, the finite element model of the reflector antenna structure is constructed in the ANSYS finite element analysis software, and the nodes N are uniformly set on the reflector surface i,j , where i=1,2....,β, j=1,2,...,γ, β,γ are the number of nodes uniformly set along the radial direction and the circumferential direction of the reflective surface respectively number.
[0033] Step 2, apply gravity to the finite element model and solve it, and output the node coordinates after deformation.
[0034] According to the actual worki...
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The invention discloses an electrical performance-oriented reflector antenna structure weighting optimization method, and mainly solves the problem that the overall electrical performance of an optimized antenna cannot be ensured in the prior art. According to the implementation scheme, a finite element model of a reflector antenna structure is constructed according to design requirements, and nodes are uniformly arranged on a reflector; applying gravity to the finite element model of the reflector antenna by using finite element analysis software to obtain node coordinates after the reflector is deformed; deducing point coordinates on an ideal reflecting surface according to the deformed node coordinates and a reflecting surface antenna principle; calculating an optical path difference before and after antenna deformation and a phase error after deformation, designing a far field weighting parameter, calculating a far field after antenna deformation, and constructing a weighted integral far field formula; and optimizing the weighted integral far-field formula, and determining structural parameters for finally designing the reflector antenna. The overall far field of the deformed antenna is used as a target for optimizing antenna parameters, the overall electrical performance of the optimized antenna is guaranteed, and the method can be used for structural design of a reflector antenna.
Description
technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a weighted optimization method for a reflection surface antenna structure, which can be used in the structure design of the reflection surface antenna. Background technique [0002] Reflector antennas are widely used in deep space exploration, radio astronomy and manned spaceflight due to their simple structure, high gain, narrow beam and other performance advantages. They are commonly used microwave and millimeter wave frequency band antennas. With the rapid development of modern radio astronomy technology and the improvement of the ability to capture weak signals, reflector antennas are developing towards high-frequency bands and large apertures. However, due to the large-diameter structure, the weight increases geometrically, and its gravity will cause deformation of the antenna structure and affect its electrical performance. Therefore, how to design an optimal ...
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IPC IPC(8): G06F30/23G06F30/10
CPCG06F30/23G06F30/10Y02T10/40
Inventor 李娜田雲歌郑彬李向阳包建强田艳伟王岩
Owner XIDIAN UNIV