The first proposed WCT was Nikola Tesla. In 1890, Tesla proposed: using the Earth as a conductor, establishing a low-frequency resonance between the Earth and the ionosphere, and using the surface electromagnetic waves surrounding the Earth to transmit power over long distances. In 1901, Tesla tried to establish the Wardenclyffe Tower. This is actually a high-powered wireless tower that, according to Tesla's vision, can transmit calls, broadcasts, and even wireless transmissions across the Atlantic. Due to the lack of sufficient funds, Tesla’s attempt ended in failure.
But human research on WCT did not end there. In the following decades, after continuous research and improvement, WCT was gradually popularized.
In the early 1960s, Raytheon did a lot of research on wireless charging, which laid the experimental foundation for wireless charging and made this concept a reality.
In June 2007, the research team led by Marin Soljacic of the Massachusetts Institute of Technology (MIT) published the research results on the website of the US Science magazine. The team used a magnetic resonance device and a power supply to light up a 2 m opening. 60 W light bulb. The technology has the longest transmission distance of 2.7m, but researchers believe that the power supply can already charge the battery within this range. And you only need to install one power supply to power the entire house.