Satcoms UK Homepage   English Translation - please visit www.satcoms.org.uk directly Italian Translation Spanish Translation French Translation German Translation Portugese Translation
Russian Translation Arabic Translation Japanese Translation Hindi Translation Chinese Translation Hebrew Translation
  New Posts New Posts RSS Feed: G/T Calculation
  FAQ FAQ  Community Search   Events   Register Register  Login Login
 SPONSORED BY: Not Yet Sponsored.
Looking for Satellite Link Budget or VSAT Calculations?
Click Here for Antenna Gain, Turnaround Frequency,
Eb/No, BER, EIRP, G/T & C/No Calculations
Click Here for the Satellite Link Budget Calculators
 

Quick Links : Latest Satellite & VSAT News Latest Topics in the Community Main Satcoms UK Community Index Latitude & Longitude, Azimuth & Elevation Dish Antenna Pointing Tools, Link Budget Calculators & Software The following tutorials will help you understand and guide you through the basics of satellite communications These are the free online satellite link budget calculators

G/T Calculation
 Post Reply Post Reply
Author
  Share Topic Share Topic  Topic Search Topic Search  Topic Options Topic Options
Satcoms UK View Drop Down
Administration
Administration
Avatar

Joined: 29/March/2001
Location: United Kingdom
Online Status: Offline
Posts: 486 		Post Options Post Options   Quote Satcoms UK Quote  Post ReplyReply Direct Link To This Post Topic: G/T Calculation
    Posted: 29/September/2008 at 10:49
G/T Calculation
 
G/T is the figure of merit for a satellite system.
 
G is the Receive antenna gain.
 
T is the system noise temperature.
 
System noise temperature = antenna noise temperature + Receiver noise temperature  (LNA)
 
Antenna noise temperature is the noise power seen at the receive output of the antenna. (To LNA)
 
If you are not measuring with an LNA or Receiver then the System noise temperature = antenna noise temperature. This is not a representative value for calculating G/T since the G/T relates to the receive performance of both antenna and receiver.
 
To convert to dB, T dB = 10 log(T kelvin)
 
If both are measured in dB then the G/T = Ant Gain - System Noise Temp.
 
 
Satcoms UK
The Satellite Communications Community and Resources Website.
Back to Top
Sponsored Links


Back to Top
 Post Reply Post Reply

Community Jump Community Permissions View Drop Down



This page was generated in 0.172 seconds.
Satcoms UK - Satellite Communications Community Website
© Satcoms UK 2002 - 2010 , All rights reserved. | Privacy Policy | Terms of Use | Site Map