Radio Frequency Rectennas
The simplest crystal radio receiver, employing an antenna and a demodulating diode (rectifier), is actually a rectenna - although it discards the DC component before sending the signal to the earphones. People living near strong radio transmitters would occasionally discover that with a long receiving antenna, they could get enough electric power to light a light bulb. Researchers are experimenting the use of rectennae to power sensors in remote areas.
RF rectennas are used for several forms of wireless energy transfer.
Read more about this topic: Rectenna
Famous quotes containing the words radio and/or frequency:
“Denouement to denouement, he took a personal pride in the
certain, certain way he lived his own, private life,
but nevertheless, they shut off his gas; nevertheless,
the bank foreclosed; nevertheless, the landlord called;
nevertheless, the radio broke,
And twelve oclock arrived just once too often,”
—Kenneth Fearing (19021961)
“One is apt to be discouraged by the frequency with which Mr. Hardy has persuaded himself that a macabre subject is a poem in itself; that, if there be enough of death and the tomb in ones theme, it needs no translation into art, the bold statement of it being sufficient.”
—Rebecca West (18921983)