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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >3D printed dielectric lens for the gain enhancement of a broadband antenna
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3D printed dielectric lens for the gain enhancement of a broadband antenna

机译：3D打印介电透镜，用于增强宽带天线的增益

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摘要

A novel 3D printed dielectric lens to enhance antenna gain parameters is presented.The lens is fabricated using a fused deposition method (FDM) which is acost-effective and an efficient 3D printing technique. Poly-methyl methacrylate(PMMA) is used as a dielectric material due to its good RF properties. The thicknessof the dielectric lens is 14 mm and provides a gain enhancement of up to6.9 dBi over a wide frequency range. The dielectric lens is designed and computationallyanalyzed to demonstrate refractive index value close to zero. It hasbeen shown that impedance-matched near-zero refractive index lens geometryeliminates strong reflections, and consequently enhances the antenna gain. Acorrelation is established between the individually, stacked unit cell layers andnear-zero refractive index cut-off frequencies. The claim is substantiated throughmeasured results using a broadband Vivaldi antenna. A gain enhancement ofup to 6.9 dBi is recorded for the bandwidth from 13.5 to 24 GHz. An excellentcorrelation is reported between the measured and simulated results.
机译：提出了一种新颖的3D打印介电透镜，用于增强天线增益参数。该透镜采用熔融沉积法（FDM）制造，该方法具有成本效益和高效的3D打印技术。聚甲基丙烯酸甲酯（PMMA）由于其良好的射频特性而被用作介电材料。介电透镜的厚度为14毫米，并在很宽的频率范围内提供高达6.9 dBi的增益增强。对介电透镜进行了设计和计算分析，以证明其折射率值接近零。已经表明，阻抗匹配的近零折射率透镜的几何形状消除了强反射，并因此提高了天线增益。在单独的，堆叠的晶胞层与接近零的折射率截止频率之间建立了相关性。该声明通过使用宽带Vivaldi天线的测量结果得到证实。对于13.5至24 GHz的带宽，记录了高达6.9 dBi的增益增强。据报道，测量结果与模拟结果之间具有极好的相关性。

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