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Analytical framework of small-gap photoconductive dipole antenna using equivalent circuit model

机译：等效电路模型的小间隙光电导偶极子天线分析框架

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摘要

A compact planar antenna sources with on-chip fabrication and high directivity in order to achieve large depth-of-field for better image resolution is the prospective demand for THz imaging application. Therefore, the small-gap photoconductive dipole antennas have been explored to fulfil such applications demand. However, there are certain modalities for improving the photoconductive dipole antenna performance which need to identify to accomplish high THz average radiated power and improved total efficiency. The unit-cell small-gap photoconductive dipole antenna radiation power enhancement methods need to optimize the design parameters with photoconductive material selection from theoretical simulation. Further, the potential improvement of coupling efficiency of THz wave with air as well as femto-second laser incident efficiency is also important parameters to enhance the radiation power of small-gap photoconductive dipole antenna. In this paper, we have presented an analytical procedure employing explicit mathematical expression leading to the physical behaviour of small-gap photoconductive dipole antenna. The effects of biased lines on the antenna performance parameters are discussed with the help of proposed equivalent circuit model. We have explored the effect of gap-size on the THz radiated power and on total radiation efficiency from the proposed photoconductive dipole antennas.
机译：为了实现较大的景深以获得更好的图像分辨率，具有片上制造和高方向性的紧凑型平面天线源是THz成像应用的潜在需求。因此，已经探索了小间隙光电导偶极天线来满足这种应用需求。但是，有一些用于提高光电导偶极天线性能的方式需要确定以实现高THz平均辐射功率和提高总效率。晶胞小间隙光电导偶极子天线的辐射功率增强方法需要通过从理论模拟中选择光电导材料来优化设计参数。此外，太赫兹波与空气的耦合效率以及飞秒激光入射效率的潜在改善也是提高小间隙光电导偶极天线辐射功率的重要参数。在本文中，我们提出了一种使用显式数学表达式的分析程序，从而导致了小间隙光电导偶极天线的物理行为。借助提出的等效电路模型，讨论了偏置线对天线性能参数的影响。我们已经研究了间隙尺寸对所提出的光电导偶极子天线的THz辐射功率和总辐射效率的影响。

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  • 来源
    《Optical and quantum electronics》 |2017年第10期|334.1-334.23|共23页
  • 作者

    Malhotra Isha; Thakur Prabhat; Pandit Shweta; Jha Kumud Ranjan; Singh Ghanshyam;

  • 作者单位

    Department of Electronics and Communication Engineering, Jaypee University of Information Technology, Solan, India;

    Department of Electronics and Communication Engineering, Jaypee University of Information Technology, Solan, India;

    Department of Electronics and Communication Engineering, Jaypee University of Information Technology, Solan, India;

    Department of Electronics and Communication Engineering, Shri Mata Vaishno Devi University, Katra, Jammu & Kashmir, India;

    Department of Electronics and Communication Engineering, Jaypee University of Information Technology, Solan, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Antenna efficiency; Equivalent circuit model; Photoconductive dipole antenna; Source conductance; THz power;

    机译：天线效率;等效电路模型;光电导偶极天线;源电导;太赫兹功率;

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