Page 47 - SATELLITE AND RADAR COMMUNICATION SYSTEM

Wire Antennas

Wire antennas are the basic an-
tennas. Mono pole and dipole an-

tennas come under this category.
These are used in very high

frequencies in order to provide the
communication for TTCM
subsystem. Wire antennas are

suitable for covering its range of
access and to provide signal
Figure 2.10: Example of wire
strength in all directions. antenna

Horn Antennas

An antenna with an aperture at the

end can be termed as an Aperture
antenna. The edge of a transmission
line when terminated with an

opening, radiates energy. This
opening which is an aperture, makes

it as an aperture antenna. Horn
antenna is an example of aperture

antenna. It is used in satellites in
Figure 2.11: Example of horn
order to cover more area on earth.

Reflector Antennas

Reflector antennas are suitable for

producing beams, which have more
signal strength in one particular

direction. That means, these are
highly directional antennas.
So, Parabolic reflectors increase the

gain of antennas in satellite
communication system. Hence, Figure 2.12: Example of reflector

these are used in telecommunica- antenna 39
tions and broadcasting.
Satellite System Elements