Dielectric Metasurface Inspired Directional Multi-Port Luneburg Lens as a Medium for 5G Wireless Power Transfer-A Design Methodology

• Published in: IEEE photonics journal Vol. 14; no. 3; pp. 1 - 10
• Main Authors: Majumder, Basudev, Vinnakota, Sarath Sankar, Upadhyay, Siddharth, Kandasamy, Krishnamoorthy
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01.06.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 5G mobile communication; Dielectrics; Directive antennas; Electric fields; Energy conversion efficiency; Energy harvesting; engineered periodic structures; Glide symmetry; Lenses; luneburg lens; Metasurfaces; Millimeter waves; Rectennas; Refractive index; sensing; wireless power transfer; Wireless power transmission
• ISSN: 1943-0655; 1943-0655; 1943-0647
• DOI: 10.1109/JPHOT.2022.3169711

In this paper, a novel dielectric metasurface-inspired multi-beam directional Luneburg lens is proposed as a wireless power transfer medium at 5G mm-wave band. The lens is constructed using dielectric-based unit cells made up of a glide symmetric approach. It is connected with a set of microwave detector integrated multi-port tapered rectangular feeds to convert the received RF energy from different directions to DC power across a combined load. The proposed structure can be a potential candidate to harvest ambient energy from a wide coverage range of around 160° and produce a power conversion efficiency of about 76% for an input power of 14.9 dBm at 24 GHz.