小型化平面单极子天线研究  

Study on a Wideband Small-sized Planar Monopole Antenna

作　　者：李绪平[1] 史小卫[1] 郑会利[1] 

机构地区：[1]西安电子科技大学,西安710071

出　　处：《火控雷达技术》2005年第4期37-38,52,共3页Fire Control Radar Technology

摘　　要：研究一种新型的全向电小天线。在平面单极子天线的末端采用蛇形结构,并在适当的位置加载,将大大减小天线尺寸,扩展阻抗带宽。所设计的天线在30—400MH z频带内V SW R<2.5,阻抗带宽达到1:13,天线高度仅有0.4m,适用于移动载体多频段通信系统。设计过程中使用了基于有限元法的HFSS电磁仿真软件,计算结果与实测数据吻合得较好,表明电磁场数值仿真技术在加载天线设计中的可行性。A new omni-directional small-sized antenna is studied. Using snake structure at the end of the planar monopole and adding load at proper position can decrease the size greatly and broaden the impedance bandwidth. It achieves 1：13 impedance bandwidth within 30 to 400MHz frequency band （with VSWR 〈2. 5）. The antenna is only 0. 4m in height. The design will be used for mobile and multi- frequency band communication system. During the process of the design, the HFSS EM simulation software is used, which is based on the finite element method. The calculated results are similar to the measured. It indicates that EM simulation technology is practicable for the design of loading antennas.

关 键 词：小型化 平面单极子 加载天线 

分 类 号：TN821.3[电子电信—信息与通信工程]