Wireless chips from Renesas Electronics Corp can work without batteries

A new way of working for wireless communication modules found by Renesas Electronics. Bluetooth and WiFi communication modules created using this technology can operate without rechargeable batteries. The idea, in general, is not new, such chips receive energy from radio waves, which fill the space around us. The chips convert the radio signal into electricity, and thus provide themselves with the necessary energy. The details of the development, unfortunately, are not yet known, but this data should have been presented at VLSI Circuits 2011 .

Since technology does not require the use of batteries, wireless chips can be very small. For example, they can be used for medical purposes by attaching a chip to a patch that measures body temperature and sending this data to a smartphone. So, for example, you can monitor the temperature of the child’s body, getting the necessary information constantly.
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You can come up with something else, for example, to produce movie posters with such a chip that would transmit data to communicators and phones of people passing by, including the date of the film and basic data. In general, on this occasion you can think of a lot of things.

Conventional wireless modules in active mode consume several tens of milliwatts. The new technology allows to reduce this figure to several microwatts. By the way, the chip size reaches a couple of hundred microns, so it is really very small. The developers have already conducted a demonstration of the chip, the tests were successful.

Via nikkeibp