VSAT systems use small satellite dishes between 1-2 meters in diameter to connect geographically dispersed locations to a central hub station via satellite communication. They operate in the Ku band using low power transmitters between 1-2 Watts and can provide data rates from a few thousand bits per second up to 256 kbps. VSAT networks are commonly used by businesses to link remote locations and stores to a central computer system to facilitate rapid sales transactions.

1. VSAT SYSTEMS
Mr R.S.Anande
Assistant Professor
rvanande21@gmail.com

2. OVERVIEW
• VSAT means Very Small Aperture Terminal.
• Most VSAT systems operate in Ku band, with earth
station antenna diameter of 1 to 2 m and transmitter
powers of 1 or 2 W.
• The earth stations are usually organized in a star
network, in which the earth stations connect to a
central hub station via a GEO satellite.
• Data rates – few thousand bits per second to 256
kbps.

3. • VSAT systems are used to link businesses and
stores to a central computer system so that sales
transactions can be completed more rapidly.

5. Network Architectures
• There are three basic implementations of any
telecommunications service –
1. One-way implementation
2. Two-way implementation
3. Split-two-way implementation ( Split IP)

6. One-Way Implementation
• This is the mode of a satellite used in the
broadcast satellite services(BSS).

7. VSAT Antennas
• It is the key element in a VSAT system.
• The small size and low transmit power of a VSAT
station are the factors that keep price of the
earth station at a level that makes a VSAT
network an economical.

8. VSAT Antennas