一种新型正交双极化渐变槽线天线

A Novel Orthogonally Dual-polarized Tapered Slot Antenna

提出了一种新型的正交双极化渐变槽线天线。它具有宽频带、高隔离、低交叉极化的特性。文中首先研究了该渐变槽线单元各结构参数与天线性能的关系,以此为基础设计了正交双极化的渐变槽线天线,在4.9∶1频带范围内VSWR小于2∶1,两端口间的隔离度优于25 dB。因此,该天线可用作移动通信的基站天线。

In this paper, a pair of orthogonal tapered slot antenna with wider bandwidth, higher isolation between input-ports, and lower cross-polar level in radiation, is developed. A parametric study on the performance of the prototype antenna is presented, and then a dual-polarized antenna is designed, for which the VSWR of two ports in 4.9 ： 1 frequency range are 〈 2： 1, and input isolation is better than 25dB. Thus, this antenna is a new qualified candidate of base station antenna for WLAN.