Method for designing array antennae distributed in circular aperture field based on Bessel function

Abstract

The invention discloses a method for designing array antennae distributed in a circular aperture field based on Bessel function. The method comprises the following steps of: distributing antenna arrays on a circular aperture; distributing aperture fields on a concentric circle array which consists of two or more concentric circular rings; arranging at least three antenna units which are uniformly distributed in central symmetry on each concentric circular ring; regulating distribution of the aperture fields by using a parameter weighting method based on the Bessel function, and thus obtaining continuously-distributed aperture fields in which different types of wave beams are formed; and computing the radius and excitation of each concentric circular ring in the concentric circle array which corresponds to different types of wave beams by using a discrete method. The invention has the advantages that complicated and unordered multidimensional optimization process is eliminated, a determined and quick implementation method for array antenna layout and excitation parameters is provided, the method can be widely applied to analysis and design of the antenna arrays for phased array radars and navigation satellites, and quick forming of the wave beams in different occasions is realized.

Description

technical field [0001] The invention relates to a circular aperture synthesis method, in particular to a design method of an array antenna based on Bessel 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 and helical antenna cannot meet the requirements of superior gain. [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...

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Problems solved by technology

[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 and helical antenna cannot meet the requirements of superior gain

[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

[0004] The aperture synthesis method is a method based on the relationship between the aperture field distribution and the far field distribution. It is widely used in the design of large aperture surfaces such as planar antennas and parabolic reflector antennas. Compared with the traditional array antenna optimization algorithm design, it has certain advantages. The superiority of the method, but this method is only limited to a beamforming design, and cannot quickly switch between different types of beams

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