Gadalla M N, Abdel-Rahman M, Shamim Atif
IMPACT Lab, Computer, Electrical and Mathematical Sciences and Engineering Division King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia.
Prince Sultan Advanced Technologies Research Institute (PSATRI), College of Engineering, King Saud University, Riyadh 11421, Kingdom of Saudi Arabia.
Sci Rep. 2014 Mar 6;4:4270. doi: 10.1038/srep04270.
The increasing energy demands of the world's population and the quickly diminishing fossil fuel reserves together suggest the urgent need to secure long-lasting alternative and renewable energy resources. Here, we present a THz antenna integrated with a rectifier (rectenna) for harvesting infrared energy. We demonstrate a resonant bowtie antenna that has been optimized to produce highly enhanced localized fields at the bow tip. To benefit from this enhancement, the rectifier is realized between the overlapped antenna's arms using a 0.7 nm copper oxide. The thin film diode offers low zero bias resistance of 500 Ω, thus improving the impedance matching with the antenna. In addition, the rectenna prototype demonstrates high zero bias responsivity (4 A/W), which is critical in producing DC current directly from THz signals without the application of an external electric source, particularly for energy harvesting applications.
全球人口不断增长的能源需求以及迅速减少的化石燃料储备共同表明，迫切需要确保长期的替代和可再生能源资源。在此，我们展示了一种集成有整流器的太赫兹天线（整流天线），用于收集红外能量。我们展示了一种谐振蝴蝶结天线，该天线经过优化，可在蝴蝶结尖端产生高度增强的局部场。为了利用这种增强效果，整流器是在重叠的天线臂之间使用0.7纳米的氧化铜实现的。该薄膜二极管具有500Ω的低零偏置电阻，从而改善了与天线的阻抗匹配。此外，该整流天线原型展示了高零偏置响应度（4A/W），这对于直接从太赫兹信号产生直流电流而无需外部电源至关重要，特别是对于能量收集应用。
