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Stretchable wideband dipole antennas and rectennas for RF energy harvesting. 2021

Jia Zhu, and Zhihui Hu, and Chaoyun Song, and Ning Yi, and Zhaozheng Yu, and Zhendong Liu, and Shangbin Liu, and Mengjun Wang, and Michael Gregory Dexheimer, and Jian Yang, and Huanyu Cheng
Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.

The ultimate application of bio-integrated, stretchable electronics hinges on the indispensable modules of stretchable wireless data transmission and power supplies. While radiofrequency (RF) antennas and rectennas could enable wireless communication and RF energy harvesting in the far-field, their performance deteriorates because of the frequency detuning from mechanical deformations. Here, stretchable wideband antennas and rectennas are introduced to robustly operate and combine received RF power over their wideband upon mechanical deformations. Devices with stretchable wideband antennas and rectennas create application opportunities such as self-powered systems, remote monitoring of the environment, and clean energy. A comprehensive set of manufacturing schemes, device components, and theoretical design tools for the stretchable wideband antennas and rectennas is reported. A stretchable wideband rectenna integrated with various functional sensing modules and its demonstration with enhanced effective rectenna efficiency over the state-of-the-art by 10-100 times illustrates a system-level example of this technology.

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