Dielectric Steering of a 3-D Printed Microwave Slot Array
Dielectric Steering of a 3-D Printed Microwave Slot Array
复制标题
3D 打印微波缝隙阵列的介电导引
DOI：
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发表时间：
2018
影响因子：
4.2
通讯作者：
G. Le Sage
中科院分区：
文献类型：
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作者：
G. Le Sage
提出了一种可操纵的三维印刷行波微波槽阵。插入的介质杆改变了阵列中的波导波长，在辐射槽之间增加了恒定的相移。这反过来又实现了主瓣远离轴视的倾斜角。与物理旋转阵列相比，通过固定物理安装调整高增益槽阵列辐射或接收波束方向的能力具有实际优势：它将安装阵列所需的体积降至最低。安装体积刻度为<italic>W</italic> tan <italic>θ</italic>，其中<italic>W</italic>为阵列宽度，<italic>θ</italic>为转向角。这里的作品<italic>W</italic> = 186.2 mm, <italic>θ</italic> = 8.5°，因此安装体积厚度的变化为27.9 mm。该阵列的厚度为11.6 mm，因此安装体积减少了3.4倍。打开阵列波导背面的中心线允许沿每个波导的中心插入介电棒。对该装置进行了仿真和构建，实验装置实现了8.5°连续可调波束转向，实现增益降低2.1 dB。
A steerable, three-dimensional printed, traveling-wave microwave slot array is presented. Inserted dielectric bars change the guide wavelength in the array, adding a constant phase shift between radiating slots. This in turn achieves a tilt angle of the main lobe away from boresight. The ability to adjust the direction of a beam radiated or received by a high-gain slot array with fixed physical mounting has a practical advantage compared to physically rotating the array: It minimizes the volume required for the mounted array. Mounting volume scales as <italic>W</italic> tan <italic>θ</italic>, where <italic>W</italic> is the array width and <italic>θ</italic> is the steering angle. The work presented here has <italic>W</italic> = 186.2 mm and <italic>θ</italic> = 8.5°, so the change in mounting volume thickness is 27.9 mm. This array is 11.6 mm thick, so the mounting volume is reduced by a factor of 3.4. Opening the center line of the back side of the array waveguides allowed the insertion of dielectric bars along the center of each waveguide. The described device was both simulated and built, and the experimental device achieved 8.5° of continuously adjustable beam steering with a reduction in realized gain of 2.1 dB.