Method for designing array antenna with circular aperture field distribution based on Sinc function

A technology of array antenna and design method, which is applied in the direction of antenna, antenna array, electrical components, etc., can solve the problem of low efficiency of array implementation, and achieve the effect of avoiding random optimization algorithm, good symmetry, and fast beamforming

Inactive Publication Date: 2015-04-29
ZHEJIANG UNIV
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Problems solved by technology

[0003] In recent years, antenna array technology has been widely used in radar, satellite communication and other systems. However, in order to obtain the position and excitation of array elements in the design of array antennas, some global optimization algorithms (genetic algorithm, particle swarm algorithm, differential Evolutionary algorithm, etc.), the time spent increases exponentially with the increase of array elements, and the final result may not be the optimal result, and the implementation efficiency for a slightly larger array is very low

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  • Method for designing array antenna with circular aperture field distribution based on Sinc function
  • Method for designing array antenna with circular aperture field distribution based on Sinc function
  • Method for designing array antenna with circular aperture field distribution based on Sinc function

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Embodiment

[0035] Such as Figure 4 As shown, a concentric circle array layout structure composed of three concentric rings is adopted. There are 4 antenna units A1 on the innermost concentric ring, 8 antenna units A2 on the middle concentric ring, 16 antenna units A3 on the outermost concentric ring, R 1 , R 2 , R 3 are the radii of the innermost circle, the middle circle, and the outermost circle of concentric rings, respectively.

[0036] Such as figure 2 As shown, where P is the internal weighting parameter, the abscissa is the radial coordinate of the normalized radius a, and the y-coordinate is the magnitude of the aperture field, the internal weighting parameter P is 0.5, 2.5, 4.1, 4.5, 6.5, respectively Transform Weighted Quasi-Sinc Function The aperture field distribution of figure 2 As shown, the aperture field distribution is rotationally symmetric about the aperture center. Using circular aperture field distribution and far-field radiation Relationship,

[003...

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Abstract

The invention discloses a method for designing an array antenna with circular aperture field distribution based on a Sinc function. An antenna array is distributed on a circular aperture, and aperture fields are distributed on a concentric circle array composed of more than two concentric circles. Antenna units are arranged on each concentric circle, the number of the antenna units on the same concentric circle is at least 4 and is an even number, and the antenna units are uniformly distributed in a central symmetry mode. The aperture field distribution is regulated through a parameter weighting method based on the Sinc function, and the continuous aperture field distribution shaped with wave beams of different kinds is obtained. The radius and the excitation of each concentric circle in the concentric circle array corresponding to the wave beams of different kinds are obtained by calculating through a discrete method. The method avoids a complex and unordered multidimensional optimization process, and a realization method of deterministic and fast array antenna layout and excitation parameters is obtained. The method can be widely applied to analysis and design of array antennas such as phased array radar and navigational satellite, and the fast shaping of wave beams under different occasions is realized.

Description

technical field [0001] The invention relates to a design method of an array antenna, in particular to a design method of an array antenna based on Sinc function circular aperture field distribution. Background technique [0002] With the rapid development of wireless communication, a single antenna can no longer satisfy the control of the far-field lobe pattern. A single microstrip, helical antenna, and horn antenna cannot meet the gain requirements. [0003] In recent years, antenna array technology has been widely used in radar, satellite communication and other systems. However, in order to obtain the position and excitation of array elements in the design of array antennas, some global optimization algorithms (genetic algorithm, particle swarm algorithm, differential Evolutionary algorithm, etc.), the time spent increases exponentially with the increase of array elements, and the final result may not be the optimal result, and the implementation efficiency is very low f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/00
Inventor 徐魁文李欢孟庆阳皇甫江涛冉立新
Owner ZHEJIANG UNIV
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