首页> 外文学位 >Broadband terahertz microstrip waveguide.
【24h】

Broadband terahertz microstrip waveguide.

机译:宽带太赫兹微带波导。

获取原文
获取原文并翻译 | 示例

摘要

The first part of this dissertation focuses on the research of efficient broadband Terahertz microstrip waveguides. I propose a novel subwavelength microstrip architecture for efficient broadband THz waveguides that utilizes dipole antennas at the input-face for enhanced THz coupling. This compact optoelectronic device utilizes a metal dipole antenna on the input face of substrate to couple freely propagating THz pulses into the subwavelength structure, and employs a microstrip line structure to guide the THz signals along the desired path. I will discuss both experimental and simulation results, which demonstrate the capability of this microstrip structure to operate as an efficient broadband terahertz waveguide.;The second part of this dissertation presents our research on the role of metal film thickness on the enhanced transmission properties of a periodic array of subwavelength apertures. I have measured the enhanced transmission properties of periodic arrays of subwavelength apertures fabricated in thin metal films as a function of the metal film thickness. The thickness range explored extends from lambda/15, where lambda is the skin depth, to approximately 2pi. Experimentally, we find that there is negligible transmission enhancement for metal films as thin as lambda/15. For metal films thicker than one skin depth, there appears to be little additional enhancement at the resonant frequencies.;The third part of this dissertation describes our investigation on the phase sensitive terahertz transmission properties of split ring resonator array. I have measured the transmission properties of double-ring split ring resonator (SRR) arrays and closed ring resonator arrays using terahertz (THz) time domain spectroscopy. We find that the electric field, when appropriately polarized, can couple to the magnetic resonance. I measure shifts in the resonance properties with changes in the SRR dimensions and the substrate medium. The results are consistent with theory.
机译:本文的第一部分主要研究高效宽带太赫兹微带波导的研究。我提出了一种用于高效宽带太赫兹波导的新颖的亚波长微带架构,该架构在输入面上利用偶极天线来增强太赫兹耦合。这种紧凑的光电器件在基板的输入面上利用金属偶极天线将自由传播的THz脉冲耦合到亚波长结构中,并采用微带线结构沿所需的路径引导THz信号。我将讨论实验结果和模拟结果,以证明这种微带结构可以用作有效的宽带太赫兹波导。第二部分介绍了我们对金属膜厚度对增强膜的透射特性的作用的研究。亚波长孔的周期性阵列。我已经测量了在金属薄膜中制造的亚波长孔的周期性阵列的透射特性随金属膜厚度的变化。探索的厚度范围从lambda / 15(其中lambda是集肤深度)到大约2pi。在实验上,我们发现,对于厚度仅为λ/ 15的金属膜而言,透射率的提高可忽略不计。对于厚度大于一个趋肤深度的金属膜,在共振频率上似乎没有额外的增强。论文的第三部分描述了我们对裂环共振器阵列的相敏太赫兹传输特性的研究。我已经使用太赫兹(THz)时域光谱仪测量了双环裂环谐振器(SRR)阵列和闭环谐振器阵列的传输特性。我们发现,当电场适当极化时,它可以耦合到磁共振。我通过改变SRR尺寸和基质介质来测量共振特性的变化。结果与理论相符。

著录项

  • 作者

    Shou, Xiang.;

  • 作者单位

    The University of Utah.;

  • 授予单位 The University of Utah.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 138 p.
  • 总页数 138
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

  • 入库时间 2022-08-17 11:37:37

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号