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Tag Archives: harvesting

DenGyo Rectenna Harvests Lost Microwaves

By David Ponce

Looks like people are still trying to harvest stray electromagnetic waves and convert these into usable energy. Some of you may remember the huge controversy we generated two years ago with news of RCA’s Airnergy, a device that claimed to make electricity from WiFi signals. Most of you agreed this was bunk as there was just not enough power in these signals. Ok. But what about microwaves? Japanese company DenGyo has announced the Microwave Regenerative Converter, which is what they call a “rectenna”. This stands for antenna and rectifier, smushed together, and not for anal antenna. The idea is that you’d place the device inside a microwave oven and any energy that doesn’t go directly towards heating up your food would be converted back into electricity through this device, up to 100W. Since the water content of your food determines the oven’s efficiency, the rectenna would be doing the most converting with old stale bread or some similar dry things.

If you follow the links, you’ll be treated to all manner of mathematical formulas. We can’t understand them, but we think this could work. Any engineers want to set us straight?

[ TechOn! ] VIA [ Reddit ]