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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Metamaterial based a printed monopole antenna for sensing applications
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Metamaterial based a printed monopole antenna for sensing applications

机译：基于超材料的印刷单极天线，用于传感应用

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摘要

The applications of metamaterials (MTM) based on interdigital capacitor (Cint)rnand via that extends the function of conventional printed antennas to encompassrnpassive wireless sensor at microwave frequencies is presented in this article. Thernproposed antenna consists of two rectangular arms of Cint connected to a printedrnmicrostrip monopole with six shorting via wires soldered to the ground plane.rnThe size of the whole antenna structure, including the proposed MTM, is foundrnto be less than 0.45λ at 1.35 GHz. The antenna performances, in terms of returnrnlosses (S11), bandwidth (BW), gain (Go), and radiation patterns, are measured inrnthe free space environments. To characterize the sensing properties, the antennarnperformance is tested in close to different types of water. It is found that thernantenna exhibits a significant change in the S11 spectra relatively to the waterrnintroduction. These advancements in the performance of the antenna arernbelieved due to the MTM structures. The antenna shows excellent matching overrnseveral bands, however, only the resonance mode at 1.35 GHz, which the gain isrnrelatively high, is used for sensing. The sensing mechanism is based on the S11rnspectrum change.
机译：本文介绍了基于叉指电容器（Cint）rnand的超材料（MTM）的应用，它将常规印刷天线的功能扩展到微波频率范围内的无源无线传感器。提议的天线由连接到印刷的微带单极子的Cint的两个矩形臂组成，通过焊接到接地平面的导线将其短路六个。整个天线结构（包括拟议的MTM）的尺寸在1.35 GHz时小于0.45λ。在自由空间环境中测量天线的回波损耗（S11），带宽（BW），增益（Go）和辐射方向图。为了表征感测特性，在接近不同类型的水中测试了天线的性能。发现相对于水引入，天线在S11光谱中表现出显着的变化。相信由于MTM结构，天线性能的这些进步。天线在几个频段上都显示出极好的匹配，但是，仅使用增益相对较高的1.35 GHz谐振模式进行感应。感测机制基于光谱的变化。

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