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本文设计制作了一种高隔离度低副瓣双极化平板阵列天线,该阵列天线采用角锥喇叭作为辐射单元,以获得高增益,馈电网络采用空气带状线,以获得较低的馈电损耗,利用探针对喇叭馈电,可获得较高的极化隔离度。在阵列设计中,采用泰勒加权算法以获得-23dB的旁瓣,同时利用反相馈电技术使阵列的交叉极化小于-30dB。仿真和实测结果表明,在6GHz±200MHz内,驻波小于2,天线增益大于23dB,交叉极化电平小于-30dB.
In this paper, a high isolation and low side-lobe dual-polarization planar array antenna is designed and manufactured. The array antenna uses a pyramid horn as a radiating element to achieve high gain. The feeding network uses air stripline to obtain a lower feed-in Power loss, the use of probe feed on the horn, access to higher polarization isolation. In the array design, a Taylor-weighted algorithm is used to obtain -23dB of sidelobes, while the cross-polarization of the array is made less than -30dB using an inverting feed technique. The simulation and measured results show that the standing wave is less than 2 in 6GHz ± 200MHz, the antenna gain is greater than 23dB, and the cross-polarization level is less than -30dB.