互辐射对八元平面阵的影响分析及试验. (Chinese)

Analysis and Experiment on the Effect of Mutual Radiation on Eight-Element Planar Array. (English)

Due to the existence of mutual radiation between array elements, the performance of dense array will change, such as resonance frequency drift, radiation power reduction, etc., which will adversely affect the overall performance of the array. In this paper, the characteristics of the mutual radiation impedance of eight-element planar array are analyzed, and the radiation power of the array is improved by changing the mutual radiation impedance. By introducing the interaction of the mutual radiation into the calculation of the directivity, the directivity calculation of the array is amended. Based on the above analysis, the finite element software is used to simulate the directivity of the array, and a prototype is made for test. The result shows that the lower the frequency and the smaller the space between the array elements, the stronger the mutual radiation between the elements, and the directivity of the array introduced into the amended mutual radiation is closer to real situation. [ABSTRACT FROM AUTHOR]

阵元间互辐射作用的存在会导致密排阵的性能变化, 如谐振频率漂移、辐射功率降低等, 对基阵整体 性能产生不利影响。该文分析了八元平面阵的互辐射阻抗特性, 通过改变互辐射阻抗来提高阵的辐射功率, 并通 过将互辐射作用引入指向性的算法, 修正了基阵的指向性算法。在此基础上, 用有限元软件仿真了基阵的指向性, 并制作样机进行了试验。结果表明, 工作频率越低, 阵元间距越小, 阵元间互辐射作用越强烈, 引入互辐射作用修 正的基阵指向性更接近真实情况。 [ABSTRACT FROM AUTHOR]

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