Highly efficient dual band 2.45/5.85 GHz rectifier for RF energy harvesting applications in ISM band
Highly efficient dual band 2.45/5.85 GHz rectifier for RF energy harvesting applications in ISM band
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适用于 ISM 频段射频能量收集应用的高效双频段 2.45/5.85 GHz 整流器
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
W. Khan
中科院分区：
文献类型：
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作者：
Mutee ur Rehman;Waleed Ahmad;W. Khan
提出了一种工作频率为 2.45GHz 和 5.8GHz 的高效单分支双频整流器，适用于各种射频 (RF) 能量收集应用。该电路由倍压器、阻抗匹配网络和负载电阻组成。用于整流的二极管是 Skyworks 的 SMS-7630，通过二极管的比较研究证明其选择是合理的。基于极低损耗微带线的双频带阻抗变压器用于阻抗匹配。由于其低损耗因数，该电路在 1.57mm 厚的 Rogers RT/duriod 5880 基板上设计。感兴趣的功率电平为 -10 dBm 至 -30 dBm。对于−10 dBm 的典型输入功率，整流器的模拟转换效率在 2.45 GHz 时为 50.7%，在 5.8 GHz 时为 20.1%，这是在这些频率下该功率水平所报告的最高效率。所提出的整流器的峰值转换效率在 2.45 GHz 时为 57.1%，在 5.8 GHz 时为 39.2%。测量结果与模拟结果非常吻合。该整流器可收集 21.71 uW 直流功率，对于 −10.3dBm 通道功率的输入，总测量转换效率为 23.26%。
A highly efficient single branch dual-band rectifier operating at 2.45GHz and 5.8 GHz for various Radio Frequency (RF) Energy harvesting applications is presented. The circuit consists of a voltage doubler, an impedance matching network, and a load resistor. The diode used for rectification is SMS-7630 by Skyworks and its selection has been justified by a comparative study of diodes. An extremely low loss microstrip line based dual band impedance transformer is used for impedance matching. The circuit has been designed on 1.57mm thick Rogers RT/duriod 5880 substrate because of its low dissipation factor. The power levels of interest are from −10 dBm to −30 dBm. The simulated conversion efficiency of the rectifier is 50.7% at 2.45 GHz and 20.1% at 5.8 GHz for a typical input power of −10 dBm, which are the highest reported efficiencies at this power level at these frequencies. The peak conversion efficiencies for the proposed rectifier are 57.1% for 2.45 GHz and 39.2% for 5.8 GHz. Measurements show good agreement with the simulated results. 21.71 uW DC power is harvested with this rectifier with an overall measured conversion efficiency of 23.26% for an input of −10.3dBm channel power.