摘要
提出了一种宽带平面单极天线，其辐射单元为底部具有斜切角的矩形铜片，馈电点偏离辐射单元的中心位置，斜切角和不对称馈电的应用有效地扩展了带宽.用Ansoft HFSS软件对天线尺寸、斜切角和馈电点位置等参数对天线特性的影响作了分析，给出了这些参数的最佳值，并根据这些最佳参数制作了天线样机.以电压驻波比小于3.5：1为标准，实测得到的天线带宽为70～3000 MHz.电压驻波比和方向图的测量结果与仿真结果吻合较好.
A wideband planar monopole antenna is designed. The radiator of the proposed antenna is a rectangular copper sheet, whose bottom is beveled. The feeding point is offset from the center of the radiator. The use of beveling radiator and asymmetrical feeding enhances the impedance bandwidth significantly. The influences of the antenna＇s dimensions, beveled angle and feeding position on the performance of the antenna were analyzed using a commercial software package called Ansoft HFSS, and then the optimized parameters were presented. Finally, the prototype was manufactured according to the optimized parameters. Its measured operating bandwidth is 70-3000 MHz with voltage standing wave ratio （VSWR） lower than 3.5： 1. The measured results of the VSWR and pattern agree well with the calculated results.
出处
《电波科学学报》
EI
CSCD
北大核心
2007年第3期405-409,共5页
Chinese Journal of Radio Science
关键词
宽带
平面单极天线
天线
wideband, planar monopole antenna, antenna
