一种具有5.8 GHz WLAN深度抑制特性的超宽带全向天线  

A UWB Omnidirectional Antenna with Deep Suppression of 5.8 GHz WLAN

作　　者：令狐暑暑 逯暄 彭甫镕 张婷 LINGHU Shushu;LU Xuan;PENG Furong;ZHANG Ting(College of Physics and Electronic Engineering,Shanxi University,Taiyuan 030006,China;Institute of Big Data Science and Industry,Shanxi University,Taiyuan 030006,China)

机构地区：[1]山西大学物理电子工程学院,山西太原030006 [2]山西大学大数据科学与产业研究院,山西太原030006

出　　处：《测试技术学报》2022年第6期543-548,共6页Journal of Test and Measurement Technology

基　　金：山西省高等学校科技创新资助项目(2019L0075)。

摘　　要：为超宽带室内定位系统设计了一种具有5.8 GHz WLAN深度抑制特性的超宽带单陷波全向天线.采用“倒箭头”形贴片作为辐射单元,在矩形地面上刻蚀矩形开路槽和直角三角形截断,获得了宽的阻抗带宽;在辐射贴片上刻蚀1个半波长C形槽,并在地面上刻蚀1个半波长RSCSRR槽对,实现了5.8 GHz WLAN信号的深度抑制.仿真结果表明,天线的阻抗带宽为3.10 GHz~10.60 GHz,5.8 GHz陷波处的电压驻波比达7.59.实测的S_(11)曲线与驻波比曲线与仿真结果吻合良好,验证了陷波的有效性;4 GHz,6.5 GHz,9 GHz频点的实测方向图表明天线在整个超宽带频段内具有良好的辐射特性和全向性,满足超宽带室内定位系统天线的设计需求.An ultra-wideband(UWB)single-notch omnidirectional antenna with 5.8 GHz WLAN depth suppression characteristics is designed for the UWB indoor positioning system.An“inverted arrow”shaped patch is used as radiating unit.A rectangular open-circuit groove and right-angled triangle truncation are etched on the rectangular ground to obtain a wider impedance bandwidth.A half-wavelength C-shaped groove is etched on the radiation patch,and A half-wavelength RSCSRR(rectangular single complementary split ring resonator)groove pair are etched on the ground to achieve deep suppression of 5.8 GHz WLAN signals.The simulation results show that the impedance bandwidth of the antenna is 3.10 GHz~10.60 GHz,and the voltage standing wave ratio(VSWR)at the 5.8 GHz notch reaches 7.59.The measured S_(11) and VSWR are in good agreement with simulations,which verifies the effectiveness of the notch;the measured patterns at 4 GHz,6.5 GHz and 9 GHz show good radiation characteristics and omnidirectionality within the entire UWB band,satisfying antenna requirements of indoor positioning system.

关 键 词：超宽带 全向天线 单极子天线 WLAN抑制 单陷波 

分 类 号：TN823.24[电子电信—信息与通信工程]