小型宽带波束偏转共形天线阵列设计。

Design of Miniaturized Wideband Beam Deflection Conformal Array Antenna.

机构信息

School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Xiaolingwei Street, Nanjing 210094, China.

出版信息

Sensors (Basel). 2023 Jan 13;23(2):930. doi: 10.3390/s23020930.

DOI:10.3390/s23020930

PMID:36679727

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9866856/

Abstract

Antenna beam deflection, along with miniaturization and wideband of the antenna is in demand for practical applications. In this paper, a cylindrical conformal array antenna with a small-tilt forward beam was designed. The microstrip antenna unit was loaded with the artificial electromagnetic structure, which reduced the size of the antenna unit. As a result, the center spacing of the array elements can be shortened with the same array element spacing. The beam deflection angle can be increased in this way without increasing the coupling effect between the parts. Changing the number of line array elements and the number of line arrays can regulate the beam width of E-field and H-field, respectively. The bandwidth of the antenna can be significantly extended by slotting the ground plane. This work implemented a cylindrical conformal array of the antenna's forward beam with a small dip angle using a cylindrical carrier as an example. The measurement results showed that the angle between the main beam and the carrier axis of the conformal antenna was less than 30°, the bandwidth was more than 30%, and the antenna volume decreased by 40.4%.

摘要

天线波束的偏移、小型化和宽带化是实际应用中的需求。本文设计了一种具有小倾斜前向波束的圆柱共形阵天线。微带天线单元加载了人工电磁结构，这减小了天线单元的尺寸。因此，在相同的阵元间距下，可以缩短阵列单元的中心间距。这样可以增加波束的偏移角度，而不会增加部件之间的耦合效应。通过改变线阵元的数量和线阵的数量，可以分别调节 E 场和 H 场的波束宽度。在地面上开槽可以显著扩展天线的带宽。这项工作以圆柱载体为例，实现了具有小倾角前向波束的圆柱共形阵天线。测量结果表明，共形天线的主波束与载体轴之间的夹角小于 30°，带宽超过 30%，天线体积减小了 40.4%。