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Optimization method of sparse circular antenna array

A technology of circular antenna and optimization method, applied in the field of array antenna

Inactive Publication Date: 2015-12-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

However, there are few studies at home and abroad on sparse arrays with greater degrees of freedom.

Method used

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  • Optimization method of sparse circular antenna array
  • Optimization method of sparse circular antenna array
  • Optimization method of sparse circular antenna array

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Embodiment Construction

[0086] The optimized implementation mode of the present invention is described in detail below

[0087] Embodiments of the present invention are given below. It can be seen from the drawings that the present invention proves its effectiveness and stability by optimizing the positions of the array elements for the apertures and sparse ratios of the two cases. figure 1 is a model of a sparse circular antenna array. The first example is that the present invention optimizes the array element positions of the sparsely distributed circular ring antenna array with the aperture r≤4.5λ, the sparsely distributed ratio of 70% and the number of array elements being 184 (excluding the array elements on the center of the circle). image 3 It is the far-field radiation pattern of the optimal planar circular array, the PSLL is -22.723dB on the φ plane, and the worst PSLL is -22.051dB. Figure 4 It is the far-field pattern at φ=0°, φ=45°, and φ=90°. The optimal array element distribution i...

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Abstract

The invention discloses an optimization method of a sparse circular antenna array. The optimization method of the sparse circular antenna array comprises the following steps: (1) producing individuals by adopting an indirect method to establish an initial population; (2) performing genetic pretreatment to the population; (3) performing generalized crossing and generalized variation to the population; (4) performing genetic post-treatment to the population and selecting superior individuals according to fitness; (5) performing iterative optimization to obtain optimum individuals and maximum peak side lobe level. The circular array optimized by adopting the method is characterized in that array elements are non-uniformly distributed on the diameter of a circular hole and are not limited to an auxiliary circular ring. The method can utilize the degree of freedom of the array elements to a larger extent, is higher in efficiency than the traditional genetic algorithm and can enable the antenna array to obtain lower side lobe level.

Description

technical field [0001] The present invention relates to the field of array antennas. Specifically, it uses modified genetic algorithm to realize multi-constraint sparse circular antenna array design, and equidistant auxiliary rings are designed on circular apertures, and sparse circular array antennas are designed using the characteristics of circular ring arrays. , so that it can obtain the lowest possible peak side lobe level. Background technique [0002] The circular array antenna is one of the most important array antenna types among the multi-element antenna types, and it is widely used in the fields of communication and radio astronomy. The circular ring array antenna has ideal directional characteristics in its azimuth direction, and its circular structural characteristics make its beam, antenna gain and other performances basically stable. Because the circular array antenna has the above characteristics, it is widely used in many engineering practices, but the circ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 陈客松朱永芸常全付姜金男
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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