What makes mobile phones work

Radio waves carry the information and travel in air at the speed of light. Cell phones transmit radio waves in all directions. The waves can be absorbed and reflected by surrounding objects before they reach the nearest cell tower.

For example, when the phone is placed next to your head during a call, a significant portion over half in many cases of the emitted energy is absorbed into your head and body. Cell phones contain at least one radio antenna in order to transmit or receive radio signals. An antenna converts an electric signal to the radio wave transmitter and vice versa receiver. Some cell phones use one antenna as the transmitter and receiver while others, such as the iPhone 5, have multiple transmitting or receiving antennas.

An antenna is a metallic element such as copper engineered to be a specific size and shape for transmitting and receiving specific frequencies of radio waves. While older generation cell phones have external or extractable antennas, modern cell phones contain more compact antennas inside the device thanks to advanced antenna technologies.

Many modern smart phones also contain more than one type of antenna. Posted by Jason Cartwright on April 13, Mobile Phones use wireless technology Although they serve the same purpose, mobile phones and landlines work differently.

How does Mobile Phone sound travels? How do Mobile Phone towers work? How do Cells work? Bringing a background in multimedia and passion for technology to the job, Cartwright delivers detailed product reviews, event coverage and industry news on a daily basis.

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And in this case, to route the call, the operator needs to know the network cell of the recipient. This is no problem when you move a few metres inside the cell to which one is currently connected. But if one moves away from the antenna, the signal weakens and communication may be interrupted. To avoid this, the mobile continuously measures the quality of nearby signals. And during a call, below a certain threshold, it is able to automatically switch the connection to another closer or less-congested antenna of the operator.

Different technologies used by mobiles Nowadays, mobile phones primarily use three technologies based on antenna cell networks. In recent years, other technologies have emerged and enriched mobile uses:. Radio Waves how does a mobile phone work?