Electronics Club's picture


Joined: Sep 18, 2019

Replies: 0
September 20, 2019 - 9:37am

What is an antenna?

Hiro_Hamada's picture


Joined: Apr 17, 2018

Replies: 110
Antenna converts electric currents to radio waves
September 20, 2019 - 10:35am

You can think of antenna as a black box that converts electric currents to radio waves. 

Consider a walkie talk as an example, the audio signal is converted into an electric signal this electric signal in our circuit has to some how travel through air to be received at the other end. An antenna is a transducer that converts this electric signal into radio waves.

There is so much happenign to the electrical signal inside the circuit before it reaches the antenna. If you want to practically understand what hapenns, then try building you own FM transmitter circuit like this to understad better