This invention describes a system to charge electronic devices using solar power collected in space. Solar panels on an orbiting satellite or space station convert sunlight into electricity, which is then transformed into energy waves, such as microwaves or laser beams. These waves are sent to an earth station, and when an electronic device signals its location, the earth station beams the energy directly to a special antenna (a rectenna) on the device. The rectenna then converts the energy back into electricity to charge the electronic device.
Why it matters: Since 2010, the cost of launching large-scale space infrastructure has significantly decreased. Concurrently, advancements in high-power wireless energy transmission, rectenna efficiency, and precise beam steering for position optimization have made the core technical challenges more addressable.
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