A high-precision terahertz retrodirective antenna array with navigation signal at a different frequency

Zhong-bo ZHU; Wei-dong HU; Tao QIN; Sheng LI; Xiao-jun LI; Jiang-jie ZENG; Xian-qi LIN; Leo P. LIGTHART

doi:10.1631/FITEE.1900581

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A high-precision terahertz retrodirective antenna array with navigation signal at a different frequency

Special Feature on Evolution and Innovation of Antenna Systems for Beyond 5G and 6G | Updated：2022-06-07

- A high-precision terahertz retrodirective antenna array with navigation signal at a different frequency
- 高精度太赫兹异频回溯天线阵列
- Frontiers of Information Technology & Electronic Engineering Vol. 21, Issue 3, Pages: 377-383(2020)
- Affiliations：
  
  Beijing Key Laboratory of Millimeter Wave and Terahertz Technology, Beijing Institute of Technology, Beijing 100081, China
  National Key Laboratory of Science and Technology on Space Microwave, China Academy of Space Technology, Xi'an 710100, China
  School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
- Author bio：
  
  Wei-dong HU, E-mail: hoowind@bit.edu.cn
- Funds：
- DOI：10.1631/FITEE.1900581
  CLC： TN821
- Received：24 October 2019，
  
  Revised：2020-;3-;3，
  
  Published：2020-03
- Accepted：
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Zhong-bo ZHU, Wei-dong HU, Tao QIN, et al. A high-precision terahertz retrodirective antenna array with navigation signal at a different frequency[J]. Frontiers of Information Technology & Electronic Engineering, 2020, 21(3): 377-383.
DOI：

Zhong-bo ZHU, Wei-dong HU, Tao QIN, et al. A high-precision terahertz retrodirective antenna array with navigation signal at a different frequency[J]. Frontiers of Information Technology & Electronic Engineering, 2020, 21(3): 377-383. DOI： 10.1631/FITEE.1900581.

摘要

未来通信系统将工作于更高频率，并提供更高传输速率。频率提升将导致难以提供区域宽波束覆盖，因此灵活捷变的波束跟踪将成为技术发展的必然趋势。本文报道的太赫兹波束回溯天线阵列可为灵活捷变的波束跟踪提供良好解决方案。该天线阵列接收40 GHz的导频信号，回溯波束传输的信号是120 GHz。仿真结果表明文中所述具有三明治堆叠结构的天线阵列可成功实现入射波的回溯功能。天线辐射方向图显示该天线阵列在20°入射波条件下，其回溯波束在19.9°位置处，增益为23.87 dB，回溯方向相对误差仅为0.5%。这意味着在5 km传输距离下，水平误差仅为8.7 m。

Abstract

Future communications will provide higher transmission rates and higher operating frequencies. In addition

agile beam tracking will be an inevitable trend in technology development. The terahertz retrodirective antenna array proposed and discussed in this paper can be a better solution for agile beam tracking. The array receives a 40-GHz navigation signal and accurately retransmits a 120-GHz beam in the direction of the arrival wave. Simulation results indicate that the proposed array with a stacked sandwich structure has realized the tracking of the received wave. The scanning radiation pattern shows that the array gain is 23.87 dB at 19.9° when the incident angle is 20° with a relative error of only 0.5%

meaning that there is a lateral error of only 8.7 m at a transmission distance of 5 km.

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