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An Optimization Method for Sparse Circular Antenna Array

A technology of circular antenna, optimization method, applied in the fields of instrumentation, computing, electrical digital data processing, etc.

Inactive Publication Date: 2018-10-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • 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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  • An Optimization Method for Sparse Circular Antenna Array
  • An Optimization Method for Sparse Circular Antenna Array
  • An Optimization Method for Sparse Circular Antenna Array

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Embodiment Construction

[0081] The optimized implementation mode of the present invention is described in detail below

[0082] Embodiments of the present invention are given below. It can be seen from the accompanying drawings that the present invention optimizes the position of the array element through the aperture and the sparse ratio, and proves the validity and feasibility of the method. figure 1 A model diagram of a sparse circular antenna array. This example is to optimize the element position of the sparsely distributed circular ring antenna array whose design parameters are aperture r≤4.5λ, sparsely distributed rate of 70% and number of array elements of 184 (excluding the array elements on the center of the circle). image 3 It is the far-field radiation pattern of the optimal planar ring 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 is as Figure 5 s...

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Abstract

The invention discloses an optimization method for a sparsely distributed circular antenna array, which comprises the following steps: (1) adopting an indirect method to generate individuals to construct an initial population; (2) performing genetic pretreatment on the population; (3) performing generalization on the population Crossover and generalized mutation; (4) Perform genetic post-processing on the population, and select dominant individuals according to their fitness; (5) Iterative optimization to obtain the optimal individual and the minimum peak sidelobe level. The feature of the circular array optimized by this method is that the array elements are distributed non-uniformly on the circular aperture and not limited to the auxiliary ring. This method can make greater use of the degrees of freedom of the array elements, which is more efficient than the traditional genetic algorithm and can Make the antenna array get lower side lobe level.

Description

technical field [0001] The invention relates to an array antenna design method, in particular, it uses an improved genetic algorithm to realize the design of a sparsely distributed circular antenna array with multiple design constraints. With the help of equidistant auxiliary rings designed on the circular aperture, the sparsely distributed antenna array is designed using the characteristics of the circular ring array. Circular array antenna to achieve the lowest possible peak sidelobe 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 characteristi...

Claims

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Application Information

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Patent Type & Authority Patents(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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