Design of Antenna Structure and Analysis of Beam Split Effect in Ultra-BandWidth Terahertz Communications

HAO Wanming; YOU Xiaobei; SUN Gangcan; ZHU Zhengyu

doi:10.11999/JEIT211290

Volume 45 Issue 1

Jan. 2023

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Article Navigation > Journal of Electronics & Information Technology > 2023 > 45(1): 200-207

HAO Wanming, YOU Xiaobei, SUN Gangcan, ZHU Zhengyu. Design of Antenna Structure and Analysis of Beam Split Effect in Ultra-BandWidth Terahertz Communications[J]. Journal of Electronics & Information Technology, 2023, 45(1): 200-207. doi: 10.11999/JEIT211290

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HAO Wanming, YOU Xiaobei, SUN Gangcan, ZHU Zhengyu. Design of Antenna Structure and Analysis of Beam Split Effect in Ultra-BandWidth Terahertz Communications[J]. Journal of Electronics & Information Technology, 2023, 45(1): 200-207. doi: 10.11999/JEIT211290

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Design of Antenna Structure and Analysis of Beam Split Effect in Ultra-BandWidth Terahertz Communications

doi: 10.11999/JEIT211290

HAO Wanming^{1, 2},
YOU Xiaobei¹,
SUN Gangcan^{1, 2
,
,},
ZHU Zhengyu¹

1.
School of Information Engineering, Zhengzhou University, Zhengzhou 450001, China
2.
Institute of Industrial Advanced Technology, Zhengzhou University, Zhengzhou 450001, China

Received Date: 2021-11-18
Accepted Date: 2022-05-05
Rev Recd Date: 2022-04-10

Available Online: 2022-05-09

Publish Date: 2023-01-17

Abstract

Abstract

To overcome the beam split effect in ultra-bandwidth terahertz communications, the True Time Delay (TTD)-based large array antenna structures have been designed, while the power consumption and the hardware complexity both are high. To solve this problem, a serial equally spaced TTD-based sparse radio frequency chain antenna structure is proposed. Based on the designed antenna structure, the beams at all subcarriers can be changed by jointly optimizing the time delays of TTD devices and the phase of phase shifters, obtaining the beam spreading and beam convergence for serving different distributed users. Specifically, to serve users located in different directions, the frequency-dependent beams can be spread to different directions by optimizing time delays and phase shifts to realize beam spreading. Similarly, to serve users located in a single direction, the beams at all subcarriers can be changed to align with the same direction to obtain beam convergence. Finally, simulation results demonstrate that effectiveness of the designed structure and the proposed optimization scheme.
- Antenna,
- Ultra-bandwidth terahertz communications,
- Beam split,
- Beam spreading,
- Beam convergence

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References(20)

References

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