基于缺陷接地结构的太赫兹双频微带天线

董耘琪; 黄波; 赵欣悦; 刘玉宝; 阮久福

doi:10.11884/HPLPB201830.180029

基于缺陷接地结构的太赫兹双频微带天线

doi: 10.11884/HPLPB201830.180029

董耘琪^{1, 2,},
黄波^{1, 2},
赵欣悦^{1, 2},
刘玉宝^{1, 3},
阮久福^1, ,

1.
合肥工业大学光电技术研究院，合肥 230009
2.
合肥工业大学仪器科学与光电工程学院，合肥 230009
3.
合肥工业大学电子科学与应用物理学院，合肥 230009

基金项目:

国家自然科学基金项目 61501166

详细信息

作者简介:
董耘琪(1994—)，女，硕士研究生，从事太赫兹天线及等离子体天线研究; Zhesongak2550@163.com

通讯作者:
阮久福(1981—)，男，博士，硕士生导师，主要从事微波及太赫兹器件的研究; jfruan@hfut.edu.cn

中图分类号: TN822.4
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- 被引次数: 0
出版历程
- 收稿日期: 2018-01-22
- 修回日期: 2018-04-03
- 刊出日期: 2018-07-15

Terahertz dual-band microstrip antenna based on defected ground structure

Dong Yunqi^{1, 2
,},
Huang Bo^{1, 2},
Zhao Xinyue^{1, 2},
Liu Yubao^{1, 3},
Ruan Jiufu^{1
, ,}

1.
Academy of Photoelectric Technology, Hefei University of Technology, Hefei 230009, China
2.
School of Instrument Science and Opto-electronics Engineering, Hefei University of Technology, Hefei 230009, China
3.
School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, China

摘要

摘要: 提出了一种工作在太赫兹频段的双频微带天线。在普通矩形微带天线的基础上，在辐射贴片上加载45°和135°的矩形贴片增大辐射面积，增大高频谐振点处阻抗带宽。通过引入缺陷接地结构使得天线在接地板处的电流路径改变，并与辐射贴片相互耦合，从而实现双频特性。为提高天线增益，在辐射贴片边缘加载若干寄生矩形贴片，并增加了寄生贴片处的基板厚度。该款天线可以同时在520 GHz(508~532 GHz)和680 GHz(581~766 GHz)的频段下工作，其中高频段的相对带宽达到了27.5%，最大增益达到了3.54 dB和4.11 dB。该双频天线结构相对简单，各项性能指标稳定，对于工作在太赫兹频段上的通信系统和无线传输系统具有一定的应用价值。
- 双频天线 /
- 太赫兹频段 /
- DGS /
- 寄生贴片 /
- 相对带宽 /
- 方向增益
Abstract: A dual-band microstrip antenna operating in the terahertz band is proposed. Two rectangular patches are loaded at 45° and 135° on the antenna's radiating patch to increase the radiation area and the impedance bandwidth at the high frequency resonance point. By introducing a defected ground structure(DGS), the current path of the antenna at the ground plate is changed and coupled with the radiation patch so as to realize dual frequency characteristics. In order to increase the gain of the antenna, several parasitic rectangular patches are loaded on the edge of the radiating patch. To further improve the antenna gain, the thickness of the substrate at the parasitic patch is increased, so that the antenna can simultaneously operate well at two bands, namely 520 GHz (508-532 GHz) and 680 GHz (581-766 GHz). The corresponding maximum gains are 3.54 dB and 4.11 dB respectively. One of the relative bandwidth at high frequency reached 27.5%. The dual-band antenna has the characteristics of simple structure and stable performance, and it has the application value for terahertz communications and wireless transmission systems.
- dual-band antenna /
- THz /
- defected ground structure /
- parasitic patch /
- relative bandwidth /
- directional gain

HTML全文

图 1 普通矩形微带贴片天线及其回波损耗

Figure 1. General patch antenna and its return loss

下载: 全尺寸图片幻灯片

图 2 加两个矩形贴片的天线及其回波损耗

Figure 2. Antenna with two additional rectangular patches and its return loss

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图 3 带DGS结构的天线及其回波损耗

Figure 3. Antenna with DGS structure and its return loss

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图 4 具有T型槽结构的天线及其回波损耗

Figure 4. Antenna with T-slot structure and its return loss

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图 5 加载寄生贴片的天线

Figure 5. Antenna loaded with parasitic patch

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图 6 将寄生贴片加宽后的天线

Figure 6. Antenna with wider parasitic patch

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图 7 最终的目标天线及其回波损耗

Figure 7. Model of target antenna and its return loss

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图 8 天线在低频谐振点和高频谐振点处的增益

Figure 8. Gain of the antenna

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图 9 天线驻波比

Figure 9. Voltage standing wave ratio of the antenna

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参考文献(13)

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