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Planar slot array antenna mechanical and electronic comprehensive analysis method based on grid conversion

A technology of comprehensive analysis and slot antenna, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of disconnection between structural analysis and electromagnetic analysis, and mismatch between structural grid and electromagnetic grid Effects of mesh mismatch, resolving disconnects in EM analysis, and improving accuracy

Inactive Publication Date: 2010-12-29
XIDIAN UNIV
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Problems solved by technology

Although this method balances the contradiction between calculation accuracy and calculation time, there are still problems that the structural grid does not match the electromagnetic grid, and the structural analysis and electromagnetic analysis are disconnected.

Method used

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  • Planar slot array antenna mechanical and electronic comprehensive analysis method based on grid conversion
  • Planar slot array antenna mechanical and electronic comprehensive analysis method based on grid conversion
  • Planar slot array antenna mechanical and electronic comprehensive analysis method based on grid conversion

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example 1

[0088] A flat plate slot array antenna with a diameter of 1 meter and working in the X frequency band adopts the structure of slots on the wide side of the waveguide. It is composed of three layers of radiation waveguides, coupling waveguides, and excitation waveguides. There are 32 sub-arrays and a total of 1172 radiation slots. According to These structural parameters build its structural model as Figure 11 shown. The simulation analysis of the deformation model under the action of high and low temperature loads is carried out. The structural analysis software ANSYS11.0 is used for structural analysis, and the electromagnetic analysis software HFSS11.0 is used for electrical performance calculation.

[0089] Using the method of the present invention to apply a load with a temperature of 75°C to the antenna structure model, the obtained antenna deformation cloud image is as follows Figure 12 As shown, its maximum deformation SMX = 2.623mm. Applying a load at a temperatur...

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Abstract

The invention discloses a planar slot array antenna mechanical and electronic comprehensive analysis method based on grid conversion and is used to solve the problems of the existing analysis method that antenna detail deformation information can not be applied, the structured grid is not matched with the electromagnetic grid, and the structural analysis is not connected with the electromagnetic analysis. The method is realized by the following steps: establishing a finite element model of structural parameters according to the structural parameters of an antenna, fining the grid of the finite element model; performing structural analysis to extract a deformed structural model; converting the tetrahedral body element of the structural model to the triangular surface unit; extracting and synthetizing the cavity model of the antenna; converting the cavity model to an electromagnetic analysis model; and performing electromagnetic analysis to obtain the electrical property of the antenna.The invention converts the structural grid of the planar slot array antenna to the electromagnetic grid, integrates the structural analysis and the electromagnetic analysis and obviously increases the analysis precision and efficiency of the antenna; and the method can be used in the analysis and design of the microwave frequency band planar slot array antenna, the reflector antenna and the filter.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to an electromechanical comprehensive analysis method for a planar slotted array antenna, which is used to improve the accuracy and efficiency of computer-aided analysis of the planar slotted array antenna. Background technique [0002] The planar slot array antenna is the main form of the waveguide slot antenna. It has the characteristics of simple structure, compactness, convenient feeding and high aperture utilization. It is widely used in the microwave band and the low end of the millimeter wave. Since the plate slot array antenna is an electromechanical integrated product, its structural characteristics directly affect the electromagnetic properties, especially for the plate slot array antenna with large aperture and high frequency, the electromagnetic performance is more sensitive to the structure. In the traditional analysis of the planar slot array antenna, due to the large...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 郑飞李娜段宝岩陈梅李鹏宋立伟
Owner XIDIAN UNIV
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