3D-printed Wideband Rectangular Dielectric Resonator Antenna
3D-printed Wideband Rectangular Dielectric Resonator Antenna
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3D 打印宽带矩形介质谐振器天线
DOI：
10.1109/piers-fall48861.2019.9021330
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
K. Leung
中科院分区：
文献类型：
--
作者：
Zhen;K. Leung
研究了具有全向辐射图的 3D 打印宽带矩形介质谐振器天线 (DRA)。它是一种多层设计，具有四个同心方形介电环，在方位角方向上逐渐降低有效介电常数。为了促进 3D 打印，我们的设计中使用了可以轻松调整以提供不同有效介电常数的立方晶胞。 DRA 的三个准横磁 (TM) 模式（准 TM01δ、准 TM02δ 和准 TM03δ）由中心穿透的同轴探针同时激发。通过将这些准TM模式合并在一起，获得具有宽阻抗带宽的DRA。为了进行演示，设计并打印了一个在 C 波段工作的原型。测量结果表明，我们的设计具有44.8%（5.20-8.20 GHz）的宽10 dB阻抗带宽，完全覆盖当前5.8 GHz WLAN频段（5.725-5.875 GHz）。此外，在阻抗通带 (5.20-8.20 GHz) 上可以观察到相当稳定的辐射方向图。
A 3D-printed wideband rectangular dielectric resonator antenna (DRA) with omnidirectional radiation patterns is investigated. It is a multilayered design with four concentric square dielectric rings, which have progressively decreased effective dielectric constants in the azimuthal direction. To facilitate the 3D printing, a unit cubic cell that can be easily adjusted to provide different effective dielectric constants is used in our design. Three quasi transverse magnetic (TM) modes (quasi-TM01δ, quasi-TM02δ, and quasi-TM03δ) of the DRA are simultaneously excited by a centrally penetrated coaxial probe. By merging these quasi-TM modes together, the DRA with a wide impedance bandwidth is obtained. For demonstration, a prototype working in C-band is designed and printed. Measured results show that our design has a wide 10 dB impedance bandwidth of 44.8% (5.20-8.20 GHz), fully covering the current 5.8 GHz WLAN band (5.725-5.875 GHz). Also, fairly stable radiation patterns can be observed across the impedance passband (5.20-8.20 GHz).