【作者】 全旭林； 靳贵平； 李融林；

【Author】 Quan Xulin Jin Guiping Li Ronglin (School of Electronic and Information Engineering,South China University of Technology,Guangzhou,510641)

【机构】 华南理工大学电子与信息学院；

【摘要】 本论文提出了一种用于移动通信的宽带全向圆极化天线。天线包含四个围绕圆柱均匀放置的宽带圆极化矩形环天线,利用宽带巴伦馈电。通过增加金属反射柱改善了天线的圆极化性能。仿真可达到的10-dB回波损耗带宽和3-dB平均轴比带宽分别为30.8%(1.7 GHz-2.32 GHZ)和36.1%(1.75 GHZ-2.52GHZ),测试结果验证了仿真分析的正确性。更多还原

【Abstract】 This paper proposes a new broadband omni-directional circularly polarized(CP) antenna for mobile communications.The proposed antenna includes four broadband CP rectangular loop antennas wrapping up a cylinder.A broadband balun is developed to feed the CP antenna.A metal reflecting cylinder is produced for improving the CP performance.The simulation shows that this antenna has a bandwidth of 30.8%(1.7 GHz-2.32 GHz) for return loss(RL)≥10 dB and 36.1%(1.75 GHz-2.52 GHz) for average axial ratio(AR)≤3 dB.Good agreement between measured and simulated results was achieved.更多还原