Describe how RF waves are transmitted and received by an antenna.
What will be an ideal response?
RF waves are transmitted and received by an antenna. One end of the antenna points into the air and the other end is fixed to the ground directly or via a grounded device. Antennas are generally made of copper wire or another conductive medium; radio waves that strike the wire during transmission or reception cause electrical pressure (voltage) on the wire. The voltage forces the wire to oscillate at the same frequency as the radio waves striking the wire
or being emitted. Therefore, RF waves are broadcast by applying an electrical current to the antenna, causing the antenna's wire to oscillate at the same frequency as the radio signal.
You might also like to view...
Which tool enables you to create a video of what happens on your computer screen?
a.Machinima b.Screen capture software c.Streaming d.Webcam
In the relational database model, each row of a table represents a(n) _____.
Fill in the blank(s) with the appropriate word(s).