缝隙加载的宽频带圆极化微带天线

缝隙加载的宽频带圆极化微带天线

内容简介：为了扩展单馈圆极化微带天线的带宽,提出了一种新型的圆极化微带天线.通过在双层微带天线的圆环贴片上加载面积适当的矩形缝隙对的方式,使天线可以在较宽的频段范围内辐射圆极化波.仿真结果表明,该天线具有良好的宽带特性,其阻抗带宽(VSWR<2)达到了29.6%,圆极化带宽(AR<3 dB)为12%.该天线具有结构简单、体积小等优点,在无线通信领域具有广阔的应用前景.

Abstract：To expand the bandwidth of singly-fed circularly polarized microstrip antenna, a circularly polarized stacked microstrip antenna is proposed. With rectangular slots inserted into the upper and lower patches,the an-tenna is able to radiate circularly polarized electromagnetic wave.Simulation results show that the antenna has good wideband characteristics,with its impedance bandwidth achieving 29. 6% (VSWR< 2) and the 3 dB axis ratio(AR) bandwidth covering about 12% of the bandwidth. The antenna has a simple structure and small size, so it can be widely used for various wireless communication applications.

作者：杨帅, 冯全源,

关键词：宽带天线, 微带天线, 圆极化, 矩形缝隙,