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A compact broadband circularly polarized printed monopole antenna using twin parasitic conducting strips and rectangular metasurface for RF energy harvesting application
AEU - International Journal of Electronics and Communications ( IF 3.0 ) Pub Date : 2020-04-25 , DOI: 10.1016/j.aeue.2020.153233
Bikash Ranjan Behera , P. Srikanth , Priya Ranjan Meher , Sanjeev Kumar Mishra

In this paper, a low-profile, compact and efficient broadband circularly polarized (CP) printed Y-shaped monopole antenna using twin parasitic conducting strips and rectangular metasurface is investigated for RF energy harvesting. The proposed antenna comprises of simple Y-shaped linearly polarized (LP) monopole antenna with the partial ground plane [antenna-1]. To achieve CP from LP, one of the parasitic conducting strip (PCSL) is shorted with partial ground plane [antenna 2]. Using rectangular metasurface of 1.06λo × 0.3λo × 0.02λo, i.e. parasitic patch below the upper edge of FR-4 substrate [antenna-3], is used to improve impedance bandwidth and axial bandwidth. Antenna-3 is fabricated on FR-4 substrate, with overall dimension of 1.21λo × 0.9λo × 0.02λo at λo = 4.5 GHz. It offers measured impedance bandwidth of 2.62 GHz (3.27–5.89 GHz, 57.21%), with axial bandwidth of 1.21 GHz (4.21–5.42 GHz, 25.25%) and average gain of 4.92 dBi with antenna efficiency ≥ 72%. Time domain characteristics is analysed and obtained group delay is within 2 ns in the desired band. It is observed from the results that the proposed antenna can be used for RF energy harvesting application. The proposed antenna embedded with multi-stage rectifier of RF energy system is analyzed, calculated RF-to-DC efficiency using ADS and reported.



中文翻译:

紧凑的宽带圆极化印刷单极天线,使用双寄生导电带和矩形超表面,用于射频能量收集应用

在本文中,研究了一种使用双寄生导电带和矩形超表面的低调,紧凑,高效的宽带圆极化(CP)印刷Y形单极天线,用于射频能量收集。所提出的天线包括具有部分接地平面[antenna-1]的简单Y形线性极化(LP)单极天线。为了从LP获得CP,将一个寄生导电带(PCS L)与部分接地平面[天线2]短路。使用的1.06λ矩形超颖表面ö  ×0.3λ ö  ×0.02λ øFR-4基板[antenna-3]上边缘下方的寄生贴片用于改善阻抗带宽和轴向带宽。天线3被制作在FR-4基板,具有1.21λ整体尺寸ö  ×0.9λ ö  ×0.02λ ö在λ Ô = 4.5 GHz。它提供的测量阻抗带宽为2.62 GHz(3.27–5.89 GHz,57.21%),轴向带宽为1.21 GHz(4.21-5.42 GHz,25.25%),平均增益为4.92 dBi,天线效率≥72%。分析时域特性,并在所需频带中的群延迟在2 ns之内。从结果可以看出,所建议的天线可用于射频能量收集应用。分析了所建议的嵌入了射频能量系统多级整流器的天线,并使用ADS计算了射频到直流的效率并进行了报告。

更新日期:2020-04-25
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