Reflection in Radio Waves

REFLECTION IN RADIO WAVES

Reflection is the phenomenon in which the rays after striking the reflecting surface return back to the same medium. The law of reflection says that in reflection the angle at which wave is incident on surface equals the angle in which it is reflected.

Reflection can have advantage and disadvantage in radio communication.

In first case if the LOS is obstructed by the reflecting surface ,the EM waves will reflect and will not travel from transmitter to receiver and communication will not take place, or if there is any reflecting surface with in the 60% of  Fresnel zone the reflected rays will cause multipath interference.

In second case if the LOS is not clear , Face of both the antennas in P2P link can be faced towards the another reflecting surface which are not in the LOS path , There will be some loss in signal but the communication can take place. It has same application in mobile communication and TV transmitters and receivers