Multibeam Graded Dielectric Lens Antenna From Multimaterial 3-D Printing
Multibeam Graded Dielectric Lens Antenna From Multimaterial 3-D Printing
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DOI：
10.1109/tap.2020.2978949
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发表时间：
2020-04
影响因子：
5.7
通讯作者：
H. Giddens;Y. Hao
中科院分区：
文献类型：
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作者：
H. Giddens;Y. Hao
现代通信系统将需要具有自适应功能的天线，其能够基于信道的要求来修改其性能。例如，移动的自组织网络需要能够在360°方位平面上的任何方向上辐射的定向天线。因此，可以简单地操作以具有多功能性能特性的共形天线受到关注。在这篇文章中，我们提出了一种梯度折射率透镜天线，其设计用于在八个不同的扇区中以45°波束宽度辐射。当由简单的切换馈电网络馈电时，透镜能够在45°段中提供360°方位角覆盖。辐射模式的进一步分析表明，两个不同的多波束图案可以产生简单的馈电网络和每个馈电元件的同时激励。所提出的透镜通过多材料3D打印制造。最后一个透镜在单个扇区被激发时以8.5 dBi的增益辐射，并且在多波束模式下以5.9 dBi的最大增益辐射。最后，它是如何的透镜也可以辐射全向时，优化的相位和幅度加权应用到每个端口。
Modern communication systems will require antennas with adaptive functionality that are able to modify their performance based on the requirements of the channel. For example, mobile ad hoc networks need directive antennas that are able to radiate in any direction across the 360° azimuth plane. Conformal antennas that can be simply operated to have multifunctional performance characteristics are therefore of interest. In this communication, we present a gradient-index lens antenna designed to radiate with a 45° beamwidth across eight different sectors. When fed by a simple switched feeding network, the lens is able to provide 360° azimuth coverage in 45° segments. Further analysis of the radiation patterns shows how two distinct multibeam patterns can be produced from simple feed networks and simultaneous excitation of each feeding element. The proposed lens is fabricated by multimaterial 3-D printing. The final lens radiates with a gain of 8.5 dBi when a single sector is excited, and with a maximum gain of 5.9 dBi in multibeam mode. Finally, it is shown how the lens can also radiate omnidirectionally when optimized phase and amplitude weightings are applied to each port.