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A radio frequency and vibration energy harvesting antenna based on piezoelectric material
International Journal of RF and Microwave Computer-Aided Engineering ( IF 1.7 ) Pub Date : 2020-05-09 , DOI: 10.1002/mmce.22251
Xue Bai 1 , Wan‐yang Han 1 , Lei‐jun Xu 1 , Jia‐wei Zhang 1 , Yan‐xu Li 1
Affiliation  

This article proposes a novel hybrid energy harvesting antenna that can be used to harvest radio frequency (RF) and vibration energy in ambience. A microstrip antenna is designed on the piezoelectric film with the material of polyvinylidene fluoride (PVDF). Due to the high dielectric constant of PVDF, the antenna size can be reduced efficiently. The shape of designed microstrip antenna is trapezoidal, the final antenna size is reduced to 50 mm × 30 mm × 0.2 mm. To improve the efficiency, the rectifier with matching network is optimized and the modes of the piezoelectric film are analyzed. The experimental results show that the frequency bandwidth of the antenna is 2.1 to 2.5 GHz. For a RF source at distance of 1 m away, with a 0.25 W EIRP 2.4 GHz transmitter, the output power of the antenna can reach 17.2 μW. While under 17 Hz vibration excitation, the output voltage and power can reach 1.44 V and 15.3 μW, respectively.

中文翻译:

基于压电材料的射频振动能量采集天线

本文提出了一种新颖的混合式能量收集天线,可用于在环境中收集射频(RF)和振动能量。用聚偏二氟乙烯(PVDF)的材料在压电薄膜上设计了微带天线。由于PVDF的高介电常数,可以有效地减小天线尺寸。设计的微带天线形状为梯形,最终天线尺寸减小为50 mm×30 mm×0.2 mm。为了提高效率,对具有匹配网络的整流器进行了优化,并分析了压电薄膜的模式。实验结果表明,天线的频率带宽为2.1至2.5 GHz。对于距离为1 m的RF源,使用0.25 W EIRP 2.4 GHz发射机,天线的输出功率可以达到17.2μW。在17 Hz的振动激励下,
更新日期:2020-05-09
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