Stanford engineers develop radios that do not require batteries

Stanford engineers develop radios that do not require batteries

A Stanford engineering team created an ant-sized radio receiver that can rely entirely on collecting the energy of electromagnetic waves carrying information. No batteries are required - but if it uses a battery, an AAA battery contains enough power to run the chip. More than one hundred years.

The miniature wireless chip has a very low manufacturing cost and can be used as a sensor or controller of an IoT device. The operating frequency of the chip antenna is 24 billion megahertz. Because the transistor frequency is too fast for standard transistors to handle signals, the research team must improve the basic circuit and electronic design.

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