紧耦合对映维瓦尔第天线阵列的改进研究

2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI:10.1109/ISAPE.2018.8634156

Qi Chen, Z. Xue, W. Ren, Weiming Li

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引用次数: 2

摘要

针对超宽带相控阵天线的应用需求，提出了一种将传统的对足维瓦尔第方法与紧耦合方法相结合的方法。通过对组合结构的改进，宽带阵列的性能得到了很大的提高。首先，通过在两端的边缘元素上添加截短的臂来补偿边缘元素。然后，通过将对端Vivaldi的底部指数曲线改变为特殊曲线，获得更好的低频性能，使阵列在2-12 GHz频段内的驻波比小于2.5。最后，通过三角形阵列的排列和控制每行单元的个数，在2-12 GHz频段的阵列方向图上不会出现光栅瓣和瓣裂现象

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Research on the improvement of tightly coupled antipodal Vivaldi antenna array

A method which is the combination of traditional antipodal Vivaldi and tightly coupled approach is proposed in this paper to meet the demands of the application of ultrawideband phased array antenna. Through the improvement of the combination structure, the performance of broadband array has been greatly improved. Firstly, by adding the truncated arms to the edge elements at both ends to compensate the edge elements. Then, by changing the bottom exponential curve of the antipodal Vivaldi to a special curve to obtain better low-frequency performance, the array has a VSWR of less than 2.5 within the band of 2–12 GHz. Finally, by arraying triangle arrays and controlling the number of elements in each row, the grating lobes and lobe-splitting phenomenon won't appear at the array pattern within the band of 2–12 GHz

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2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)

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