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分析复合左右手特异材料微带漏波天线的辐射原理,建立复合左右手材料微带漏波天线仿真模型,通过仿真计算得到微带漏波天线的辐射特性。制备与仿真参数相同的实物天线,测量天线S参数、方向图和天线各单元电容瞬态电压。最后,对仿真试验结果和实物天线测量结果比较,吻合较好。在固定工作频率下,复合左右手特异材料微带漏波天线工作在左手区时,电磁波辐射主要发生在天线结构前几个单元,且电磁波以指数形式快速衰减,工作在右手区时,电磁波沿整个天线辐射,且电磁波衰减较慢。
The radiation principle of composite left-handed and left-handed microstrip leaky wave antennas is analyzed, and the microstrip leaky-wave antenna simulation model of composite left and right hand materials is established. The radiation characteristics of microstrip leaky-wave antennas are obtained through simulation. The physical antenna with the same parameters as the simulation is prepared, and the antenna S parameter, the pattern and the transient voltage of each unit of the antenna are measured. Finally, the results of simulation and real antenna measurements are in good agreement. At a fixed operating frequency, when the composite left-handed and left-handed microstrip leaky-wave antennas work in the left hand region, the electromagnetic radiation mainly occurs in the first few units of the antenna structure and the electromagnetic waves rapidly decay exponentially. When operating in the right-hand region, The antenna radiates and the electromagnetic waves decay more slowly.