摘要
圆极化天线在提高信道容量方面具有明显的优势,拥有圆极化和宽带特征的天线是满足未来大量数据无线传输的关键技术之一。提出并设计了一种采用Γ形探针馈电方式的宽频带圆极化偶极子天线,偶极子臂弯折为L形以获得圆极化特性,并通过加载寄生贴片的方法展宽阻抗带宽,通过圆形开槽与添加枝节展宽轴比带宽。利用电磁仿真软件ANSYS HFSS对该天线进行仿真,天线相对阻抗带宽达到(VSWR<2)80%,频带范围为1.50~3.52 GHz,轴比带宽(AR<3)达到58%,频带范围为1.79~3.27 GHz。同时,在整个工作频段(1.79~3.27 GHz)内增益保持稳定,且均大于3.4 d Bic。
The circularly-polarized（ CP） antenna has obvious advantages in improving the channel capacity. The antenna with circular polarization and wide band is one of the key technologies which can meet the requirement of mass data transfer in the future.Therefore,a wideband circularly polarized dipole antenna with Γ-shaped probe is proposed and designed.The dipole arms are bent into an L shape to create a circular polarization,broadening the impedance bandwidth by loading the parasitic patch,broadening the axial ratio bandwidth through the circular slot and adding stubs.The antenna is simulated by ANSYS HFSS.The relative impedance bandwidth of the antenna is 80%（ VSWR2）,the frequency band is 1.50 GHz ~ 3.52 GHz,while the axial ratio bandwidth（ AR3） is 58% and the frequency band is 1.79 GHz ~ 3.27 GHz.At the same time,the gain of the antenna in the working frequency band remains stable（ !3.4 d Bic）.
作者
王洪琳
王孟宇
WANG Honglin;WANG Mengyu(The 54th Research Institute of CETC,Shijiazhuang 050081,China)
出处
《无线电通信技术》
2018年第4期394-397,共4页
Radio Communications Technology
关键词
圆极化
宽频带
偶极子天线
circular polarization
wideband
dipole antenna
