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

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 involves a design method of a array antenna, especially a design method that involves a array antenna distributed in a circular caliber field based on the SINC function. Background technique [0002] With the rapid development of wireless communication, a single antenna can no longer meet the control of the far -field petals.A single micro -band, spiral antenna, and speaker antenna cannot meet the requirements of gain. [0003] In recent years, antenna array technology has been widely used in radar, satellite communication and other systems, but due to the design of the array antenna, to get the position and incentive of the Yuanyuan, often through some global optimization algorithms (genetic algorithms, particle group algorithms, differential differencesThe evolution algorithm) is realized. With the increase of the Yuanyuan, the time is increased, and the exponential level is increased, and the final result is not necessarily the best result....

AI Technical Summary

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, 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 for a slightly larger array is very low

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