Besides NearField, who’s working on this?

Honeywell, specifically: Christopher C. Fuller was an engineer at Honeywell who made presentations regarding his breakthrough invention in long-distance wireless power transmission technology, including to the Defense Advanced Projects Research Agency (DARPA). He is currently involved in a whistleblower lawsuit against the company, which has been the subject of several news articles.

Are there presentations of this technology?

Internal Presentations: Fuller presented his novel antenna composite technology at an internal Honeywell tech symposium in October 2022, where it won the "Next Big Idea" award. An internal email from a Honeywell executive referred to him as "the inventor of the next multi-industry disruptor".

External Presentations: In 2022, Fuller and other Honeywell representatives made presentations to DARPA (Defense Advanced Projects Research Agency) about the potential of the technology for applications such as wirelessly powering airborne aircraft from the ground. In March 2023, he also made a web conference presentation to representatives of the U.S. State Department and the U.S. Department of Commerce regarding his concerns about the technology's export potential.

Near Field Dynamics is slated to have the first public demonstration of this technology.

Do you have a copy of the presentation to DARPA?

A specific presentation given to DARPA by Christopher C. Fuller is not publicly available. Information about the presentation is derived from news reports and legal documents related to Fuller's lawsuit, confirming the presentations occurred and describing general topics like wirelessly powering airborne aircraft, but the actual content remains confidential.

How does it work?

Christopher C. Fuller's breakthrough in long-distance wireless power transmission was based on a novel antenna composite material that dramatically improved efficiency and range. This material allows for focused, efficient transfer of energy via electromagnetic waves.

Key Technical Details:

Antenna Composite: The core of the invention is a new composite material used to fashion the antennas. This material enables the creation of highly efficient, smaller, directional antennas that can focus energy over long distances.

Scale and Efficiency: According to an internal Honeywell email cited in news reports, a one-meter sized antenna using this composite could potentially deliver 400 kilowatts of power to a distance of 100 kilometers (62 miles) with an efficiency greater than 90%. Without this new composite, an antenna to achieve this performance would need to be approximately 10,000 times larger, the size of a city block.

Focusing Technology: The technology uses "proprietary beam-forming" to create a tightly controlled, focused, and unidirectional beam of energy, similar to a "virtual wire". This contrasts with older, omnidirectional methods that lost significant power over distance.

Method: The process is likely a form of far-field or radiative wireless power transfer (power beaming), utilizing high-gain antennas to concentrate radiation into a narrow beam aimed at the receiver. This method is distinct from the short-range inductive coupling used in charging pads.

Potential Applications: Honeywell envisioned commercial applications such as charging electric vehicles on the go, powering airborne cargo drones, and military uses.

Weapon Potential: Fuller expressed concerns that the same technology could be used as a radio wave-based "directed energy" weapon capable of disabling electronic systems over a citywide area.

The specific, highly technical design information, such as the exact composition of the material or operating frequencies, is protected as proprietary company information and is likely detailed only in patent filings and internal documents.