Answer to Question #279500 in Electric Circuits for dina

Question

draw and label Parabolic Reflector Antenna and explain

Answer 1

It is composed of parabolic dish along with antenna feed

Various arrangement are used as feed for the parabolic reflector antenna

This antenna type is used both as transmitter and as receiver

Parabolic reflector antenna has shape of paraboloid and hence it has properties of a parabola

Waves radiated by feed are incident or reflector

The reflector reflects them back which forms plane wavefronts.

The radiation is concentrated along the parabola axis.

The waves are canceled in other direction due to path as well as phase differences

Similarly waves falling on the dish are concentrated towards the feed placed at focal point of the dish

This way reception is carried out by the parabolic reflector antenna.