Is it possible to transfer power using rectenna from one mobile phone to other?

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Oleg Nizhnik

Possible, but meaningless.

Efficiency would be 25% or less even at contact ranges

Joachim Pimiskern

Maybe for sensors without battery:

http://www.pratt.duke.edu/news/wireless-device-converts-lost-energy-electric-power

http://www.techweekeurope.co.uk/news/scavenging-free-green-power-from-radio-waves-35622

Regards,

Joachim

Esraa Mousa Ali

yes it can be transferred , but you need to make it efficient as more as can be.

to design an efficient wireless system, you need to design a good transmitter antenna and receiver antenna which is connected to rectifier circuit to convert the waves into DC power.