Tuesday, 29 May 2012


Unbounded Media/Wireless Transmission Media

Assalammualaikum...

Unbounded Media/Wireless Transmission Media. 

This kind of media is commonly used because it is more convenient and could be used in locations that is impossible to install cables. 

Example:



Other than that, we also learned two types of antenna which arePARABOLIC DISH and HORN ANTENNA

PARABOLIC DISH (SATELLITE DISH)

  • A reflective instrument with circular parabolic shape which collects and projects energy.
  • Receive microwaves signals from satellites.
  • Transmit data/broadcast television programs.
  • A motor-driven one is the one that has planned movement to change its position.
  • Also known as earth-based station.
  • From an earth-based station to satellite, it is called uplink (going UP).
  • From satellite to an earth-based station, it is called downlink(going DOWN).
  • Placed on high places to avoid obstructions and where it is difficult to install physical transmission media. 



Parabolic Dish

HORN ANTENNA

  • For transmission and reception of microwave signals.
  • Commonly used as the active element in dish antenna.
  • Pointed toward the center of the dish reflector.
  • Minimizes the response to unwanted signals.


Horn Antenna

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