Design of the modified cylindrical Luneberg lens antenna for millimeter wave imaging
Design of the modified cylindrical Luneberg lens antenna for millimeter wave imaging
复制标题
毫米波成像改进型柱面龙伯透镜天线设计
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
M. Akhtar
中科院分区：
文献类型：
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作者：
E. Johari;Z. Akhter;M. Akhtar
本文提出了一种用于微波/毫米波成像的改进圆柱形吕尼伯格透镜天线。利用聚四氟乙烯基片（εr = 2.1）沿圆周制造不同半径的圆柱形孔洞，设计了该透镜。将所设计天线的指向性和波束宽度等参数与普通喇叭天线进行了比较，结果表明采用所提出的鲁讷堡透镜可以提高天线的分辨率。最后，利用所设计的Luneburg透镜获得了隐藏在聚氯乙烯（PVC）板后的金属块的反射率图像，证明了其在毫米波成像中的适用性。
In this paper, a modified cylindrical Luneberg lens antenna is proposed for the microwave/millimeter wave imaging applications. The proposed Luneberg lens is designed using the Teflon substrate (εr = 2.1) by making cylindrical voids of different radius along the circumference. The parameters of the designed antenna such as the directivity and the beamwidth are compared with the simple horn antenna to show the resolution enhancement using the proposed Luneburg lens. Finally, the reflectivity images of the metal patches concealed behind the Polyvinylchloride (PVC) slab are obtained using the designed Luneburg lens to show its applicability for the mm-wave imaging.