For a future without cables or batteries: the first antenna that turns WiFi into electricity is created


The director of research to turn WiFi into electricity. BRYCE VICKMARK / MIT Can you imagine a future where cables or batteries were not necessary? Where could you charge your cell phones through WiFi? Thanks to research developed by the Massachusetts Institute of Technology (MIT) and the Polytechnic University of Madrid, this future is getting closer.

A team of engineers led by Spaniards Tomás Palacios and Jesús Grajal has developed an antenna that converts WiFi into electricity. Currently, according to Grajal explains, the circuit takes the signal of “alternating current” of this network and converts it into a continuous wave, which is what “feeds most of the electronics.”

The two elements of this antenna are the flexible elements with which the circuits are created “adapting them to any service” and the energy of the WiFi.

This discovery now allows “power to circuits that have low power” and make them “work without an electrical network.” It can be done by temperature or pressure sensors, among others, “the researcher points out to this newspaper.

Within the medical field, will allow “a small medical laboratory in a pill” to be ingested where the data of patients are stored in order to cure them. It is currently done with batteries, which “must be changed when it is changed” and even “are dangerous” if there is a leak, in the case that they are lithium batteries.

The electronics of the future

Grajal points out that the ultimate goal of this research is that “we do not have to put cables” at home. In this future, there would be an integrated system of sensors, which would be inside the walls where they would not be seen and “would be receiving the electrical energy” from the electromagnetic waves. These sensors would not affect the body since “the levels they are using” are low and are already present with the WiFi signal and some are shared at Reviewimo reviews.

Currently, this research does not allow “feed a mobile”, at least “to adopt another form”. This form would be one in which the mobile would be distributed in our clothes and the battery could be fed while we “walk”.

In case there was no WiFi, you would not have to turn off these devices. You could make a similar variant to the solar power plants “that store the energy” in the morning and when it arrives “the night they release it”.

Going forward, Grajal emphasizes that one of its objectives is to improve the efficiency of the antenna, since currently, of every watt they have in electromagnetic currents such as WiFi they get “0.4 of current”.


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