Radio Frequency

Topics: Electromagnetic radiation, Electromagnetic spectrum, Alternating current Pages: 2 (534 words) Published: August 3, 2013
Radio Frequency (RF) transmission characteristics or Radio Frequency by definition is known as a frequency in the range within which radio waves may be transmitted, from about 3 kilohertz to about 300,000 Gigahertz. RF is also the range of oscillation that ranges from 3 KHz to 300 GHz and work hand in hand with the frequency of the radio waves and the fluctuation currents that carry radio signals. Radio Frequency has different types of properties but ones that are most important are the radiation of electromagnetic waves cause by the energy in a RF current. Usually an electromagnetic wave is the main base of what is known to be Radio Technology. RF can be found emitting around conductors of electrical currents, they are usually not found within the conductors themselves but usually around the shell of the conductor known as the skin effect. In summary the skin effect is due to opposing eddy currents induced by the changing magnetic field resulting from the alternating current. At 60 Hz in copper, the skin depth is about 8.5 mm. At high frequencies the skin depth becomes much smaller. In order to receive RF signal not only does an antenna need to be utilize a transmitted most known as a radio must be used to detect the radio frequency. The radio transmitted must have the ability to tune into the signal to a readable format. This leads to the most important use for RF energy is in providing telecommunication services. Such as radio and television broadcasting, cellular phones, radio devices walkie-talkie along with satellite communication are all but just a few examples of RF used in telecomm.

If at any point the human body were to come in close contact with high level RF current the RD frequency could cause burning to the human skin or even irritation. Tissue damage in humans could occur during exposure to high RF levels and the body's inability to cope with or dissipate the excessive heat that could be generated. Two areas of the body, the eyes and the...
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