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Hybrid Dual Band Radio Frequency and Solar Energy Harvesting System for Making Battery-less Sensing Nodes

机译：混合双带射频和太阳能收集系统，用于制造较少的电池的传感节点

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摘要

In this paper, a highly efficient dual band Radio Frequency (RF) energy harvester is coupled with a solar cell to make a hybrid RF/Solar Energy Scavenging system. The energy harvesting system utilizes a circularly polarized dual band omni directional antenna to receive GSM1800 and Wi-Fi 2400 signals from both sides. A low threshold and concurrent dual band rectifier is designed for RF to DC conversion. Schottky Diode SMS-7630 is used as rectifying element and microstrip lines and stubs based dual band input impedance matching network is used to match the non-linear input impedance of rectifier to the antenna. The antenna has a gain of 3.84dBi at 1.8GHz and 5.45dBi at 2.4GHz. The RF to DC conversion efficiency for a typical input power of -10dBm is 52.1% and 42.1% at 1.85GHz and 2.45GHz respectively. Monocrystalline solar cell SLMD121H10L is used for harvesting solar energy due to its wide spectral sensitivity range and compact size. The cell exhibits open circuit voltage Voc = 6.30V, short circuit current Isc = 50 mA and can provide up to 292mW of power under irradiance of 100mWcm-2. The hybrid RF/solar energy harvester produces 192.9μW of DC power which can be utilized in making various battery-less sensing applications.
机译：在本文中，高效的双频带射频（RF）能量收割机与太阳能电池耦合以制造混合射频/太阳能清除系统。能量收集系统利用圆偏振的双频带全向天线来接收来自两侧的GSM1800和Wi-Fi 2400信号。低阈值和并发双频频带整流器设计用于RF至DC转换。 Schottky二极管SMS-7630用作整流元件，微带线路和基于短条的双频带输入阻抗匹配网络用于将整流器的非线性输入阻抗与天线匹配。天线的增益为3.84DB，1.8GHz，5.45dbi为2.4ghz。对于典型输入功率的RF至DC转换效率-10dBM为1.85GHz和2.45GHz的52.1％和42.1％。单晶太阳能电池SLMD121H10L用于收获太阳能，由于其宽的光谱灵敏度范围和紧凑的尺寸。该单元呈现开路电压V. oc = 6.30V，短路电流i sc = 50 mA，可提供高达292MW的电力，在100MWCM的辐照下 -2 。 Hybrid RF / Solar Energy Harvester产生192.9μW的直流电源，可用于制造各种电池的传感应用。

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