ZigBee精确定位标志卡倒F天线设计

Design of inverted F antenna for identification card of ZigBee accurate positioning

  • 摘要: 根据ZigBee精确定位标志卡对天线的需求,设计了一种尺寸小、带宽高、辐射效率高的倒F天线。通过电磁场全波仿真软件对倒F天线进行仿真和性能评估,仿真结果表明,该倒F天线工作在2.405~2.484 GHz的ZigBee频段内, 天线回波损耗小于-10 dB;在2.45 GHz中心频率下,最大增益达2.5 dB,且天线具有全向性。在煤矿巷道中的实际测试结果表明,该倒F天线能满足精确定位标志卡的实用需求。

     

    Abstract: An inverted F antenna with small size, high bandwidth and radiation efficiency was designed according to demand for antenna of ZigBee accurate positioning identification card. Simulation and performance evaluation for the inverted F antenna was carried out through full-wave electromagnetic field simulation software. The simulation results show that the inverted F antenna can work in ZigBee band of 2.405-2.484 GHz, antenna return loss is less than -10 dB, the maximum gain is up to 2.5 dB under the center frequency of 2.45 GHz, and the antenna is omnidirectional. The actual test results in coal mine roadway also show that the inverted F antenna can meet practical needs of identification card of ZigBee accurate positioning.

     

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