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Geometric modeling method for panel slot antenna

A slot antenna and geometric modeling technology, applied in antennas, antenna arrays, special data processing applications, etc., can solve the problems of increasing the antenna development cycle, poor versatility, restricting the antenna structure or improving the efficiency of electromagnetic analysis, and speeding up the overall Effects of geometric modeling process, reduction of development cycle, and improvement of antenna geometric modeling efficiency

Inactive Publication Date: 2013-04-17
XIDIAN UNIV
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Problems solved by technology

This modeling method is a commonly used parametric modeling method, which has poor versatility and can only be applied to a geometric model of one topology. Once the topology of the antenna changes, the entire model needs to be given again The program of the modeling process seriously restricts the improvement of the antenna structure or the efficiency of electromagnetic analysis, increases the development cycle of the antenna, and leads to high development costs of the antenna

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  • Geometric modeling method for panel slot antenna
  • Geometric modeling method for panel slot antenna
  • Geometric modeling method for panel slot antenna

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Embodiment Construction

[0027] refer to figure 1 , the existing planar slot antenna has the characteristics of multi-layer, cavity, and thin-walled structure. According to the bandwidth requirements, the antenna is usually composed of several sub-arrays, and the distribution of the sub-arrays is as follows: figure 2 shown. Each sub-array is composed of radiation layer, coupling layer and excitation layer, such as image 3 As shown, it is the radiation layer, the coupling layer and the excitation layer from top to bottom, where:

[0028] The uppermost radiation layer is composed of several radiation waveguides and radiation slots. The radiation slots are longitudinal cracks opened on the upper layer of the radiation waveguide off the center line, such as Figure 4 As shown, each radiation waveguide has a number of radiation slots. The two ends of the radiation waveguide are short-circuit surfaces. The distance from the road surface is a quarter waveguide wavelength.

[0029] The coupling layer in...

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Abstract

The invention discloses a geometric modeling method for a panel slot antenna, mainly overcoming the defects of poor generality and long modeling period in the traditional geometric modeling method. The geometric modeling method comprises the following modeling steps of: firstly, splitting the antenna into a plurality of subassemblies according to the characteristic of local similarity of a panel slot antenna structure; secondly, establishing a geometric model of each subassembly and translating the geometric models to the corresponding spatial positions through circulating the structural parameter information of each subassembly; and finally, combining according to the affiliation relationship of each subassembly and a submatrix to obtain the geometric model of the whole panel slot antenna. The invention has the advantages of strong generality and high modeling efficiency and can be used for parametrically modeling a large-caliber panel slot antenna.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to modeling of antennas. Specifically, under the condition that the structure parameters of the plate crack antenna are determined, the geometric model of the antenna can be quickly established, and can be used for structural and electromagnetic analysis of the antenna. Background technique [0002] The flat panel slot antenna has the characteristics of high surface-to-surface efficiency and easy realization of low sidelobes, and is widely used in airborne and vehicle-mounted radars. The antenna structure is a typical multi-layer, cavity, and thin-walled structure, which is composed of several sub-arrays. Each sub-array consists of a radiation layer, a coupling layer and an excitation layer. Wherein the radiation layer includes a radiation waveguide and a radiation slot, and the radiation slot is a longitudinal slot opened on the wide side of the radiation waveguide; the coupling la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q13/00H01Q21/00G06F19/00
Inventor 宋立伟郑飞吕晓芳李华平李鹏李娜
Owner XIDIAN UNIV
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