用于物联网应用的紧凑型扁平偶极子整流天线

Q3 Materials Science

Progress in Electromagnetics Research C Pub Date : 2018-09-15 DOI:10.2528/PIERC18071604

A. Okba, A. Takacs, H. Aubert

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引用次数: 17

摘要

本文报道了一种新型的紧凑整流天线拓扑结构，该结构将小型化的宽带印刷天线和集成在辐射表面的整流器相结合。该天线专为ISM 900 MHz频段设计，应用于无线电力传输和能量收集，为3D室内定位提供超宽带标签。整流天线允许激活为标签供电的DC-DC升压转换器。在商用dc - dc升压转换器和电源管理单元的非最佳负载阻抗(约10 kΩ)下，在非常低的微波功率密度(> 0.18 μ W/ cm2)下，其最低转换效率为25%。当微波功率密度为0.22 μ W/ cm2时，该新型整流天线获得的直流电压超过330 mV。该测量的直流电压在当今商用现货DC- DC升压转换器和电源管理单元的冷开/启动电压范围内。所提出的整流天线也非常紧凑，因为它的表面(11 × 6 cm 2)在工作频率(860 MHz)为0.05λ 2。

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Compact Flat Dipole Rectenna for IoT Applications

A new compact topology of rectenna, which combines a miniaturized wideband printed antenna and a rectifier integrated on the radiating surface, is reported in this paper. The rectenna is designed for ISM 900 MHz band and applied to wireless power transmission and energy harvesting to supply Ultra-Wideband tags for 3D indoor localization. The rectenna allows activating a DC-DC boost converter that supplies power to the tags. It exhibits a minimum conversion efficiency of 25% for very low microwave power densities (> 0.18 µW/cm 2) on the non-optimal loading impedance (of about 10 kΩ) of a commercial DC-to-DC boost converter and power management unit. The harvested DC voltage obtained from this novel rectenna exceeds 330 mV for microwave power density of 0.22 µW/cm 2. This measured DC voltage is in the range of the cold turn-on/start-up voltage of nowadays commercial off-the-shelf DC-to-DC boost converters and power management units. The proposed rectenna is also very compact, as its surface (11 × 6 cm 2) is of 0.05λ 2 at the operating frequency (860 MHz).

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来源期刊

Progress in Electromagnetics Research C Materials Science-Electronic, Optical and Magnetic Materials

CiteScore

2.70

自引率

0.00%

发文量

113