摘要
本文提出了一种用于矿井人员定位系统的结构紧凑的Hilbert分形倒F标签天线。通过HFSS软件仿真,分别给出了普通倒F天线和Hilbert分形倒F天线的回波损耗、方向图及天线增益。仿真结果表明,这2种天线性能相当,但Hilbert分形倒F天线具有更小的尺寸,更符合矿用RFID标签天线小尺寸、低功耗的要求。制作的Hilbert分形天线经测试,在2.425GHz的中心频率下,回波损耗为-38.28dB,带宽为190MHz。
A compact inverted-F tag antenna based on Hilbert fractal structure is designed for mine monitoring system. Then, the return loss, radiation patterns and gains of the normal inverted-F antenna and Hilbert fraetal inverted-F antenna are simulated by Ansoft HFSS separately. The simulation results show that the performance of the two antennas are similar, but the later is more satisfactory to the requirement of small size and low power loss for mine monitoring systems. The manufactured antenna was tested to operate at 2.425 GHz with a return loss of -38.28 dB and a bandwidth of 190 MHz ,which suits the requirements of the system.
出处
《电信科学》
北大核心
2009年第1期70-73,共4页
Telecommunications Science
基金
国家自然科学基金资助项目(No.40674060)
