2 × 2 Textile Rectenna Array with Electromagnetically Coupled Microstrip Patch Antennas in the 2.4 GHz WiFi Band

Electronics

Hendrik Rogier¹  Juan-Manuel Lopez-Garde²  Jon Legarda²  Ruben Del-Rio-Ruiz² 

[1] Department of Information Technology, Ghent University-IMEC, Technologiepark Zwijnaarde 126, B-9052 Ghent, Belgium;DeustoTech, University of Deusto, Avenida Universidades 24, 48007 Bilbao, Spain;

关键词: energy harvesting;    microstrip antennas;    rectennas;    e-textiles;   

DOI  :  10.3390/electronics10121447

来源: DOAJ

【 摘 要 】

The development of e-textiles is fostering research in wireless energy transmission. This paper presents a purely textile 2.4 GHz WiFi band 2 × 2 rectenna array for RF energy harvesting. It utilizes the electromagnetically coupled microstrip patch antenna topology and a simple and precise construction method that provides a good performance repeatability to create multilayer microstrip textile patch antennas. The rectifier is implemented with Schottky diodes and it takes the voltage doubling configuration. An average DC power of 1,1 mW was measured for 14 μW/cm² of RF input power density, while the end-to-end average power conversion efficiency (PCE) measured was 31%. The characterization of the end-to-end PCE was evaluated considering the physical size of the prototype to make the comparison with other designs easier. Measurements in a real WiFi scenario were also performed, demonstrating its feasibility for feeding e-textiles.

【 授权许可】

Unknown