View Full Version : Energy transmitted through radio frequency


Krazie
10-22-04, 12:14 AM
Why can energy not be transmitted through radio frequincy? Can it? Sorry if this is a dumb question, I don't really know too much about this at all.

MacM
10-22-04, 12:22 AM
Why can energy not be transmitted through radio frequincy? Can it? Sorry if this is a dumb question, I don't really know too much about this at all.

It most certainly can. But power is generally transmitted at higher frequencies due to enhanced efficiency and to not be in our general broadcast bands.

Remember that the radio broadcast that you receive is infact a power transmission. Just not a very strong one because to power is subjected to an inverse square decrease with disatnce since they transmit in all directions but many such transmissions are in the range of 50KW - enough power to run 25 small homes.

For power transmission to be practical it must remain culminated or in as tight of a beam as possible.

James R
10-22-04, 12:23 AM
Every time your car radio picks up a radio station, energy is being transmitted from the station to your car. Just not very much of it.

Krazie
10-24-04, 06:24 PM
So why do electricity company's not offer wireless electricity?

MacM
10-24-04, 09:39 PM
So why do electricity company's not offer wireless electricity?

Ever stick your hand in a microwave? Or in the path of a radar beam? HOw would you like to fly through a maze of microwave beams of high power?

Further while it can be done it isn't cheap and I'm not sure of the numbers but I don't thnk it is as efficient and land lines.

Krazie
10-25-04, 05:28 PM
Excellent analogy about the microwave MacM. That makes it alot more clear to me know. Thank you for the information buddy.

geistkiesel
10-26-04, 11:58 PM
Excellent analogy about the microwave MacM. That makes it a lot more clear to me know. Thank you for the information buddy.



“ Originally Posted by Krazie
So why do electricity company's not offer wireless electricity? ”


Ever stick your hand in a microwave? Or in the path of a radar beam? HOw would you like to fly through a maze of microwave beams of high power?

Further while it can be done it isn't cheap and I'm not sure of the numbers but I don't think it is as efficient as land lines.

Isn't it, the transmitted power, all in the phase relation of the energy in any delta time period of a radiated signal? I mean that a (+1) energy level transmitted simultaneously with a (-1) signal will transmit with zero energy. I am ssuming the two signals do not anihilate each other by the temporary opposition of phase; that the measured external energy = 0, but the internal energy = |+1| + |-1|. i suppose that the 'dx' between the plus-minus burst can be manipulated at the source and receiver.

The energy source codes bursts of energy by user identiication and releases the monthly burst. Now a decoder at Middle America Mom's House in Akron, Ohio receives her monthly burst of energy from Washington State, decodes the burst and stores the EM signal filtered through a rectifier on the input pole of the dc-capacitor-plate-storage-unit behind her house on Main Street.