双环天线在3G基站中应用的研究与改进

Study and Improvement of Dual-loop Antenna Applications to 3G Base Station

摘要: 双环天线在3G基站中的应用是一种新的探索与尝试。本文对双环天线在3G基站中应用的方向图特性、阻抗匹配以及宽频带性能等进行了仿真研究与分析。为了更好地抑制第一副瓣电平,提出了对双环天线进行改进的方案。通过仿真检验,改进后的双环天线能抑制第一副瓣电平约1.4dB。应用改进的双环天线设计了一种基站天线,测试的结果均达到了指标要求,证实了双环天线在3G中的适用性。

Abstract: It is a new attempt and exploration to apply the dual-loop antenna to the 3G base station.In this paper,the characteristic of dual-loop antenna is studied,in which patterns,impedance and broadband are included.To control the first side-lobe level,a modificated version for the Dual-Loop Antenna is studied.The simulation result validates that the modification can suppress side-lobe by 1.4dB.A base station antenna is designed based on the improved Dual-Loop Antenna,the test results are good and the applicability is demonstrated in the 3G base station.