当前位置: X-MOL 学术Engineering › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Omnidirectional Antenna Diversity System for High-Speed Onboard Communication
Engineering ( IF 12.8 ) Pub Date : 2020-12-29 , DOI: 10.1016/j.eng.2020.10.014
Yongjian Zhang , Yue Li , Weiquan Zhang , Zhijun Zhang , Zhenghe Feng

In this article, an omnidirectional dual-polarized antenna with synergetic electromagnetic and aerodynamic properties is propounded for high-speed diversity systems. The propounded antenna comprises a probe-fed cavity for horizontally polarized radiation and a microstrip-fed slot for vertical polarization. Double-layer metasurfaces are properly designed as artificial magnetic conductor boundaries with direct metal-mountable onboard installation and compact sizes. An attached wedge-shaped block is utilized for windage reduction in hydrodynamics. The propounded antenna is fabricated for design verification, and the experimental results agree well with the simulated ones. For vertical polarization, the operating bandwidth is in the range of 2.37–2.55 GHz, and the realized gain variation in the azimuthal radiation pattern is 3.67 decibels (dB). While an impedance bandwidth in the range of 2.45–2.47 GHz and a gain variation of 3.71 dB are also achieved for horizontal polarization. A port isolation more than 33 dB is obtained in a compact volume of 0.247λ0 × 0.345λ0 × 0.074λ0, where λ0 represents the wavelength in vacuum at the center frequency, wherein the wedge-shaped block is included. The propounded diversity antenna has electromagnetic and aerodynamic merits, and exhibits an excellent potential for high-speed onboard communication.



中文翻译:

用于高速车载通信的全向天线分集系统

在本文中,提出了一种具有协同电磁和空气动力学特性的全向双极化天线,用于高速分集系统。所提出的天线包括用于水平极化辐射的探针馈电腔和用于垂直极化的微带馈电槽。双层超表面被适当地设计为人工磁导体边界,具有直接金属安装的板载安装和紧凑的尺寸。附加的楔形块用于减少流体动力学的风阻。制作所提出的天线进行设计验证,实验结果与仿真结果吻合良好。对于垂直极化,工作带宽在 2.37–2.55 GHz 范围内,方位辐射方向图的实现增益变化为 3.67 分贝 (dB)。而水平极化也实现了 2.45-2.47 GHz 范围内的阻抗带宽和 3.71 dB 的增益变化。在 0.247 的紧凑体积中获得超过 33 dB 的端口隔离λ 0  × 0.345 λ 0  × 0.074 λ 0,其中λ 0代表真空中在中心频率处的波长,其中包括楔形块。所提出的分集天线具有电磁和空气动力学优点,并表现出高速车载通信的极好潜力。

更新日期:2020-12-29
down
wechat
bug