长阵子边馈电的微带对数周期偶极天线的设计

一种长阵子边馈电的微带对数周期偶极天线的设计

内容简介：给出了一种可作为被动天线的超宽带微带印刷对数周期偶级天线，采用渐变线馈电实现了非平衡到平衡的转换，利用8对阵子得到了驻波2以下的8～18 GHz带宽，在整个带宽内，方向图稳定，前后比小于-20 dB，增益均大于7 dB，仿真结果与实测结果基本吻合，可作为超宽带小型化被动天线使用。

Abstract：An ultra-wideband microstrip dual-level log-periodic antenna is proposed as passive anten-na, taper-line feed is used to achieve conversion from non-equilibrium to equilibrium, and to get 8~18 GHz bandwidth of standing wave 2 following with 8 pairs of dipoles.In the entire bandwidth, pattern is stable, and before-after ratio is less than -20 dB, the gain is greater than 7 dB.The simulation results are basically consistent with experimental results .This antenna can be used as ultra-wideband miniaturi-zation passive antenna.

作者：张文涛, 杨晖, 稂华清,

关键词：微带印刷对数周期偶极天线, 渐变线馈电, 超宽带,