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首页> 外文期刊>Optik: Zeitschrift fur Licht- und Elektronenoptik: = Journal for Light-and Electronoptic >Metamaterial Fabry-Perot cavity implementation for gain and bandwidth enhancement of THz dipole antenna
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Metamaterial Fabry-Perot cavity implementation for gain and bandwidth enhancement of THz dipole antenna

机译：用于THz偶极天线增益和带宽增强的超材料法布里-珀罗腔实现

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摘要

In this article, Metamaterial layer is implemented to improve radiation characteristic of dipole antenna at THz domain. Also, cavity back reflector is studied in order to gain enhancement and pattern shaping; in fact, combination of both structures is known as Fabry-Perot cavity. Return loss is modified at 486-654 GHz for less than -10 dB and also Q factor is calculated in presence of Metamaterial layer. The absorption and shield factors are simulated and showed at 0.55 THz. Antenna gain is increased more than 120% and bandwidth is amended around 82%. By achieved simulation result, -14.85 dB shield factor is obtained for proposed metamaterial layer. The dipole antenna contains silver line on silicon lossless material with n =2.43 and the plasmonic layer is modeled by deposition of silver wire in silicon. In addition, Glass (n =1.65) and SiN (n =1.87) are used for metamaterial part and it is shown that increase in the permittivity leads to decrease the plasmonic permittivity; thus, more bandwidth of the structure is obtained. Also, effect of change in radius of the metamaterial micro wire on bandwidth of the antenna is considered. (C) 2016 Elsevier GmbH. All rights reserved.
机译：在本文中，实现了超材料层以改善偶极天线在THz域的辐射特性。此外，还研究了腔背反射器，以获得增强和图案成形的效果。实际上，两种结构的组合被称为法布里-珀罗腔。在486-654 GHz下将回波损耗修改为小于-10 dB，并且在存在超材料层的情况下也计算了Q因子。模拟了吸收系数和屏蔽系数，并显示为0.55 THz。天线增益增加超过120％，带宽修改为82％左右。通过获得的仿真结果，获得了建议的超材料层的-14.85 dB屏蔽系数。偶极天线在n = 2.43的无损硅材料上包含银线，并通过在硅中沉积银线来模拟等离子体层。另外，玻璃（n = 1.65）和氮化硅（n = 1.87）被用作超材料部分，这表明介电常数的增加导致等离子体介电常数的降低。因此，获得了更多的结构带宽。另外，考虑了超材料微导线的半径的变化对天线的带宽的影响。 （C）2016 Elsevier GmbH。版权所有。

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