摘要
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5.7～5.9 GHz,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ADS Momentum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。
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.
出处
《中国电子科学研究院学报》
2012年第3期310-313,共4页
Journal of China Academy of Electronics and Information Technology
