Coherently Assisted Wireless Power Transfer Through Barely Transparent Barriers

TL;DR

This paper introduces a novel coherent wave-based method for wireless power transfer through barely transparent barriers, achieving 100% efficiency without specialized materials, unlike traditional narrowband solutions.

Contribution

The work proposes a general, cost-effective approach using a tailored auxiliary wave to enable efficient wireless power transfer through various barriers, bypassing the need for artificial structures.

Findings

Achieves 100% energy transfer efficiency through barely transparent barriers.

Applicable to both lossless and lossy barriers without specialized materials.

Provides a broadband, general solution for wireless power transfer challenges.

Abstract

Wireless power transfer (WPT) technologies are becoming ubiquitous, but unlike wire technologies, they do not allow efficient energy transfer through barely transparent barriers. The proposed solutions to this issue rely on resonantly enhanced transparency of specially designed obstacles and hence are narrowband and require using artificially tailored materials. In this work, we suggest a fundamentally different approach to wireless power transfer through such barriers based on tailoring of a coherent auxiliary wave with a certain amplitude and phase from the side where the energy should be delivered to. This wave facilitates signal transmission and reflects back to the receiver allowing archiving of 100% energy transfer efficiency even for barely transparent barriers. In contrast to the traditional solution, this approach is general, applicable to lossless and lossy barriers and does not require cost-ineffective and complicated artificial structures.