# Room-scale magnetoquasistatic wireless power transfer using a cavity-based multimode resonator

arXiv: https://arxiv.org/abs/2502.05891 · HTML: https://mlsanity.com/paper/2502.05891/

## Key facts

- Cited by 2 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 9 Feb 2025.

## Built on by (most cited first, 2 of 2)

- [Magnetic field estimation using Gaussian process regression for interactive wireless power system design](https://mlsanity.com/paper/2510.19277/) (2025)
- [Model Merging: Foundations and Algorithms](https://mlsanity.com/paper/2605.01580/) (2026)

## Abstract (arXiv)

Magnetoquasistatic wireless power transfer can be used to charge and power electronic devices such as smartphones and small home appliances. However, existing coil-based transmitters, which are composed of wire conductors, have a limited range. Here we show that multimode quasistatic cavity resonance can provide room-scale wireless power transfer. The approach uses multidirectional, widely distributed currents on conductive surfaces that are placed around the target volume. It generates multiple, mutually unique, three-dimensional magnetic field patterns, where each pattern is attributed to different eigenmodes of a single room-scale resonator. Using these modes together, a power delivery efficiency exceeding 37.1% can be achieved throughout a 3 m * 3 m * 2 m test room. With this approach, power exceeding 50 W could potentially be delivered to mobile receivers in accordance with safety guidelines.