Research On Array Antenna Pattern Scan Characteristics Based On Immune Algorithm

Antenna pattern scanning technology has been a research focus-area. Reconfigurable antenna in a certain antenna structure, which has the function of mutil-antennas and can realize the antenna beamforming in various directions, gives the antenna pattern scanning a new paradigm. In order to meet the needs of high capacity, mutil-function, and low costs in wireless communication system, the immune algorithm was used in the array antenna in recent years. Using immune algorithm to optimize parameters of the array antennas so as to control the beamforming of reconfigurable antenna is still a difficult problem to be resolved. At present research in this field is still in the early stages of development.In this paper, it is just doing a preliminary exploration to the multi-antenna array that the immune algorithm is used to achieve different directions fo beamforming and even pattern scanning. After a brief introduction of the knowledge of reconfigurable microstip antenna and the immune algorithm, this paper analyzes the advantages of using immune algorithm in the wireless communication system, especially in satellite communication systems. The paper also summarizes the research results for the immune algorithm in the antenna design and shows the final design of the completed array antenna radiation pattern scanning.First, shows the theoretical analysis and numerical simulation software, analyzes and designs the primitives of the rectangular array and their properties, and then completes a four-yuan and 16-yuan array design and simulation. Testifies that the results from the Wilkinson power divider design principles of the complex feed network can achieve the amplitude-phase feed for the fed array.Subsequently, loads the array switch between the antenna arrays, by using immune algorithm to control the feed states and the switches among the arrays, produces a particular optimized pattern as object orientation. Through the design and simulation, this paper achieves certain formation and change of antenna patterns without so much antenna gain loss .