| Title |
Toward 5G Wireless Power Harvesting: A Promising Broadbeam Equiconvex Lens-Integrated Mmwave Harvester For Smart City Environments |
| ID_Doc |
57589 |
| Authors |
Joshi M.; Hu K.; Lynch C.A., III; Tentzeris M.M. |
| Year |
2025 |
| Published |
IEEE Microwave and Wireless Technology Letters, 35, 6 |
| DOI |
http://dx.doi.org/10.1109/LMWT.2025.3570677 |
| Abstract |
For the first time, the authors propose a 3-D lens-enabled, broadbeam energy harvester capable of mW-level of harvested power across a wide angular coverage. The design incorporates a 25-rectenna “pixel” array, each featuring a circularly polarized antenna with a highly sensitive half-wave rectifier, and an equiconvex 3-D dielectric lens to enhance power capture and angular coverage. In a proof-of-concept testing, the harvester achieved a peak power capture of 6.5 mW and maintained mW level of harvested power, at incident power densities as low as 0.1 mW/cm2, across a broad solid angle of 2.68 sr, representing the highest combined harvested power across angular coverage among mmWave harvesters. With 5G/mm-Wave EIRP of 75 dBm, the harvester can theoretically capture 6.5 mW at 40 m and sustain 1 mW out to 80 m. With broadbeam coverage and efficient energy harvesting, this system enables advanced smart city applications while reducing reliance on traditional power sources. © 2023 IEEE. |
| Author Keywords |
3-D lens; 5G; energy harvesting; Internet of Things (IoT); millimeter-wave (mmWave); rectenna; wireless power transfer |
