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tejabhiram
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Hey can anybody tell me if its possible to convert Radio waves to Electric signals?
Andy Resnick said:Sure- a radio reciever does a great job.
tejabhiram said:My Idea is to create a device which can receive radio signals, convert them into electric signals. This way one can conduct electricity wirelessly. What do you think of this?
tejabhiram said:My Idea was this. a transmitter wud be placed in a plug point which will send out the Radio waves. There would be a receiver connected to your device(such as cell phone, laptop etc etc). The transmitter sends out waves, the transmitter coverts waves to Electricity. The cell phone or laptop attached to the receiver wud be charged.
tejabhiram said:Thank you for the patient reply.
I know all the examples that you have given. I'm just intrigued by the idea of charging devices wireless. could you be more specific bout the "using a Transformer to increase the voltage" issue.
jtbell said:Unless you have highly directional transmitting and receiving antennas, almost all of the energy radiated by the transmitter will be wasted. And highly directional antennas tend to be rather large.
Consider this UHF TV antenna, which I happen to have on my roof (the lower antenna is for VHF channels 7-13). It's about 2.4 m long. You can see the directionality pattern on the first linked page. Channels 20-60 span a frequency range of about 500-750 MHz. I suppose for higher frequencies you can scale the design in inverse proportion, but someone who knows more about antenna theory than I do (which is very little) can give more details.
Of course, highly directional antennas have to be aimed carefully. The box just above the roofline in my setup is a remote-controlled rotator.
Radiowaves and electric waves are forms of electromagnetic radiation that are used for communication and transmission of information. Radiowaves have longer wavelengths and lower frequencies, while electric waves have shorter wavelengths and higher frequencies.
As mentioned, the main difference between radiowaves and electric waves is their wavelength and frequency. Radiowaves are typically used for long-distance communication, while electric waves are used for shorter distances and higher bandwidth transmissions.
Radiowaves are generated by electronic devices such as antennas, while electric waves are generated by electrical currents. Both types of waves can also be generated by natural sources such as lightning and the sun.
Radiowaves are commonly used for broadcasting radio and television signals, as well as for mobile communication. Electric waves are used for wireless communication, such as Wi-Fi and Bluetooth, as well as for radar and satellite transmissions.
There is ongoing research and debate about the potential health effects of exposure to electromagnetic radiation, including radiowaves and electric waves. However, many studies have found that these forms of radiation are generally safe at typical levels of exposure.