A very brief introduction of wireless communications is presented in this video. Wireless communications refers to exchange of information without wires which is possible by sending radio frequency signals.
Antenna converts electric current to EM waves which propagate as travelling waves
The propagation pattern depends on antenna’s radiation pattern
Multiplexing: It is a method where multiple user signals can share a common medium
Some example of wireless communications:
GPS System
Satellite Television
Satellite phone
Wireles keyboard
Cardless phone
Wikie Takie
TV remote control
#WirelessCommunicationIntroduction
