文章基本信息

标题：Wideband characteristics of density tapered array antennas
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作者：Nguyen Thanh Binh ; Nguyen Quoc Dinh ; Yoshihide Yamada 等
期刊名称：International Journal of Electrical and Computer Engineering
电子版ISSN：2088-8708
出版年度：2021
卷号：11
期号：2
页码：1356
DOI：10.11591/ijece.v11i2.pp1356-1366
出版社：Institute of Advanced Engineering and Science (IAES)
摘要：In this paper, wideband characteristics of density tapered arrays are clarified by comparing directly the array factors and radiation patterns of 3 tapered arrays structures with array factors and radiation patterns of equally spaced arrays. Calculated results for a density tapered distribution array consisting of 30 elements claims that the array can perform within a bandwidth of 2.5:1 with grating lobe levels lower than -7.8 dB. Additionally, this paper shows a method of determining the effectiveness of unequal spacing arrays in the design of actual antennas. The method is based on calculation and analysis of input impedance of array elements caused by mutual coupling effects among array elements.