Radio communication and the mobile phone

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Radio communication and the mobile phone

  1. 1. Radio communication and the mobile phone Conor McCloskey
  2. 2. History of radio <ul><li>Radio has been around for more then hundred years now. </li></ul><ul><li>There has always been a debate about who created the radio, it was between Guglielmo Marconi and Nikola Tesla. </li></ul><ul><li>Though Marconi did the first transition in 1895 </li></ul><ul><li>30 years later in 1906 the first voice broadcast went out. </li></ul>
  3. 3. But what radio waves? <ul><li>Radio waves are electrical radiation. </li></ul><ul><li>Has different waves lengths from (1mm to 100,000Km) </li></ul><ul><li>Radio waves are used of: Broadcasting, mobile radio communication and more. </li></ul>
  4. 4. Different types of wavelengths <ul><li>Long waves </li></ul><ul><li>Medium waves </li></ul><ul><li>VHF (high frequency) </li></ul><ul><li>UHF (High frequency) </li></ul>
  5. 5. Different wavelengths
  6. 6. How mobile phones work <ul><li>Mobile phones use “cells”, each “cell” has a base station at the centre of the “cell”. </li></ul><ul><li>The mobile phone uses radio waves to communicate with the radio base station in the “cell”. </li></ul><ul><li>So the closer to the “cell” you are the more signal you have. </li></ul>
  7. 7. Base stations
  8. 8. Reffreances <ul><li>PUBLIC TELECOMMUNICATION NETWORKS UNIT (2001) How Mobile Phone Networks Work [WWW] Ofcom. Available from: http:// www.sitefinder.ofcom.org.uk/mobilework.htm [Accessed 25/01/11]. </li></ul><ul><li>PUBLIC TELECOMMUNICATION NETWORKS UNIT (2001) Wavelength (online image) [WWW] Ofcom. Available from: http:// www.sitefinder.ofcom.org.uk/mobilework.htm [Accessed 25/01/11]. </li></ul><ul><ul><li>WiseGeek (2001) names of radio inventors. http://www.wisegeek.com/what-are-radio-waves.htm [Accessed 25/01/11] </li></ul></ul><ul><li>SEOR STUDENT(2005) base station cell (Online image) http://seor.gmu.edu/student_project/syst101_00b/team19/cell%20power.htm </li></ul>
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