电信科学 ›› 2019, Vol. 35 ›› Issue (7): 52-59.doi: 10.11959/j.issn.1000-0801.2019185

• 专题:5G • 上一篇    下一篇

5G中的超宽带阵列天线及其小型化技术

张申科1,杨丰旭2,尹应增2   

  1. 1 武汉虹信通信技术有限责任公司,湖北 武汉430205
    2 西安电子科技大学,陕西 西安 710071
  • 修回日期:2019-07-02 出版日期:2019-07-20 发布日期:2019-07-22
  • 作者简介:张申科(1963- ),男,武汉虹信通信技术有限责任公司技术总监、教授级工程师,主要研究方向为移动通信基站天线及天馈设备。|杨丰旭(1994- ),男,西安电子科技大学硕士生,主要研究方向为通信天线。|尹应增(1964- ),男,博士,西安电子科技大学天线与微波技术国防科技重点实验室教授、博士生导师,主要研究方向为天线工程与CAD、微波射频识别技术、微波射频电路等。

Ultra-wideband array antenna in 5G and its miniaturization technology

Shenke ZHANG1,Fengxu YANG2,Yingzeng YIN2   

  1. 1 Wuhan Hongxin Telecommunication Technologies Co. , Ltd. , Wuhan 430205, China
    2 Xidian University, Xi’an 710071, China
  • Revised:2019-07-02 Online:2019-07-20 Published:2019-07-22

摘要:

研究了超宽带阵列天线的设计及其低剖面技术。将ADS电路仿真软件与电磁场全波仿真软件Ansoft HFSS相结合,利用具有紧耦合的偶极子天线单元设计具有宽带工作的低剖面强耦合阵列天线。研究结果表明,在工作频率范围0.67~3. 78 GHz频段内,该天线阵列的电压驻波比优于2. 0,相对带宽为139. 78%,天线阵列的剖面仅有40.25 mm。其次,研究了加载人工磁导体结构实现阵列天线的低剖面技术。采用构成高阻抗地的人工磁导体结构改善了天线高频谐振性能,从而降低了天线的剖面高度。全波电磁仿真结果表明,该天线阵列在1. 1 ~ 2. 8 GHz范围的工作频率中电压驻波比优于2. 0,天线的剖面高度仅为24 mm,相对带宽78%。该技术可拓展应用到5G天线的开发。

关键词: 宽带阵列天线, 低剖面, 强耦合阵列, 高阻抗地, 人工磁导体

Abstract:

The design method of wideband array antennas and the technology of low profile were studied. Combinations of commercial simulation software ADS and Ansoft HFSS, two design examples of tightly coupled array antennas were presented, with the characteristic of wideband and low profiles. Simulated results show that the impedance bandwidth of voltage stranded ratio less than 2. 0 was from the frequency range of 0.67 GHz to 3. 78 GHz, with a height of 40.25 mm. Moreover, by loaded artificial magnetic conductor (AMC) structure on the basis of the original antenna array to form a high impedance surface to improve the high-frequency resonance performance, the low profile technology was presented for wideband array. The results of full wave electromagnetic simulation software show that the impedance bandwidth of voltage stranded ratio less than 2. 0 was from the frequency range of 1. 1 GHz to 2. 8 GHz, with a height of 24 mm and corresponding to a fractional bandwidth of 78. 0%. This technology can be extended to the development of 5G antennas.

Key words: wideband array antenna, low-profile, tightly coupled array, high impedance ground, artificial magnetic conductor

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