基于多材料3D打印的多波束梯度介质透镜天线
Multi-Beam Graded Dielectric Lens Antenna from Multi-Material 3D Printing
AI总结：
针对现代通信系统对自适应多功能天线的需求，提出一种可通过多材料3D打印制备的梯度折射率透镜天线，可实现360°方位覆盖、多波束及全向辐射，具备良好增益性能。
摘要：
现代通信系统需要具备自适应功能的天线，能够根据信道需求调整自身性能。例如，移动自组织网络需要可在360°方位平面内任意方向辐射的定向天线，因此操作简便、具备多功能性能特征的共形天线备受关注。本文提出一种梯度折射率透镜天线，设计为可在8个不同扇区实现45°波束宽度的辐射。当采用简单的开关馈电网络馈电时，该透镜能够以45°为分段实现360°方位覆盖。对方向图的进一步分析表明，通过简单的馈电网络并同时激励每个馈电单元，可产生两种不同的多波束方向图。所提出的透镜采用多材料3D打印工艺制备。最终的透镜在单个扇区激励时增益为8.5 dBi，多波束模式下最大增益为5.9 dBi。最后研究表明，当对每个端口施加优化的相位和幅度加权时，该透镜还可实现全向辐射。
英文摘要：
Modern communication systems will require antennas with adaptive functionality which 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 multi-functional performance characteristics are therefore of interest. In this paper, we present a gradient-index lens antenna designed to radiate with a 45° beamwidth across 8 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 multi-beam patterns can be produced from simple feed networks and simultaneous excitation of each feeding element. The proposed lens is fabricated by multi-material 3D 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 multi-beam mode. Finally, it is shown how the lens can also radiate omnidirectionally when optimised phase and amplitude weightings are applied to each port.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
