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How Do Cell Phones Work?
By Communication | August 28, 2009
Cell phones make use of radio frequency, which is placed on the electromagnetic spectrum. The cell phone technology uses the “Geographically Separated Zones” or cells in order to carry on working. The phones have base stations that are equipped to send and receive radio waves. The calling phones antenna sends a signal to the base station antenna that responds with the help of radio waves. Base station then transmits the call to the switching center, which sends it to the local telephone carrier.
There are different channels assigned for different geographical location and it is seen that the other channels do not interfere in its transmission. There might be obstacles on the way of the signal transmission like trees or buildings; this lets the base station send more power. It is important that the cell phone manufacturers report the Specific Absorption Rate or SAR to the FCC, as it is the amount of RF absorbed in the local tissue.
Topics: Mobiles / Cell Phones | No Comments »