摘要
为适应卫星移动通信中天线低剖面要求,设计了一种缝隙耦合馈电的双极化微带贴片天线。该天线为多贴片堆栈形式,双线极化通过H型缝隙进行耦合馈电,在贴片的上方辅以寄生贴片,以提高天线的增益和辐射效率。通过对影响天线性能的各个参数进行优化,垂直和水平极化双端口的驻波比在<2时,分别覆盖22%和30.6%的带宽,端口隔离度<30 dB,波束宽度均>70°。该设计天线可作为固定波束或相控阵天线进行卫星通信。
In order, a multi-stack micro-strip patch antenna with dual ports excited by H shaped aperture slots is designed to meet the low profile requirement of satellite correspondence antenna. A Parasitic patch is set on the top layer to improve the performance. Then each parameter of antenna is analyzed, and the VSWR satisfies the require- ment of satellite correspondence with bandwidths of two ports being 22% and 30. 6% （ VSWR 〈 2） respectively. Isolation of two ports is higher than 30 dB, and the beam width of dual polarization of two ports are greater than 70 degrees. The simulation results show that the antenna can be applied in engineering projects, and can be a satellite communication terminal to realize receiving and transmitting function.
出处
《电子科技》
2014年第5期68-71,共4页
Electronic Science and Technology
关键词
卫星通信
双极化
堆栈贴片
微带天线
satellite communication
dual polarization
multi-stack
micro-strip patch antenna
