多扇区天线阵列中的微带开关设计与实现

多扇区天线阵列中的微带开关设计与实现

内容简介：在宽带无线网络中，为了扩展传输距离和提升链路速率，天线系统的性能至关重要。提出了一种应用于多扇区天线阵列中的单刀八掷微带开关，工作频段为5.7-5.9GHz，多扇区天线阵列共包括八个扇区，每个扇区天线水平面波束覆盖范围为45°，信号通过单刀八掷微带开关在各扇区天线间进行高速波束动态切换，从而在满足高增益的同时实现了水平360°全向覆盖。单刀八掷微带开关由微带线和PIN二极管构成，通过采用ADSMomentum电磁场仿真工具进行仿真及实际生产并进行测试，结果表明所设计的单刀八掷微带开关的插入损耗、隔离度和驻波比等关键性能指标均达到设计要求。

Abstract：The performance of antenna is a key issue in the broadband wireless networks. In order to broaden the transmission distance and increase the link data rate, a SP8T microstrip switch working at 5. 7 GHz -5.9 GHz used in multi-sector antenna array is proposed. There are totally 8 sectors and each sector antenna has 45 o beamwidth. The signal switches rapidly among these sector antennas through the SPST microstrip switch dynamically. It means that the multi-sector antenna array can make 360° coverage like omni-directional antenna but with much higher gain. A simulation using ADS Momentum and a manufacture test are done. The results show that the performance of SPST microstrip switch including insertion loss, isolation and VSWR meets the demand.

作者：雷昕, 冯狄, 韩仲华, 徐海川,

关键词：微带开关, PIN二极管, 多扇区天线阵列,