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System Noise Temperature

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Satellite antenna noise temperature and elevation angle

This page provides some examples, using antenna manufacturers data.

10m diameter antenna Model 8015 from ViaSat (formerly Scientific Atlanta) C band

Elevation angle(deg)    Antenna noise temperature (C band) (K)
5 46
10 35
15 29
20 24
30 17
40 14

To the above you need to add extra according to the complexity of the feed:

2 port rx only,  add 4.5
2 port rx and tx, add 4.5
3 port 2 rx and 1 tx, add 4.5
4 port 2 rx and 2 tx, add 9.9
 

18m diameter antenna Model 8018 from ViaSat C band

Elevation angle (deg) Antenna Noise temp (C band) (K)
5 44
10 35
20 29
30 25
40 25

 

6m diameter antenna Model 8060 from ViaSat (formerly Scientific Atlanta) C + Ku bands

Elevation angle (deg) Noise temp (C band) (K) Noise temp (Ku band) (K)
10 39 55
20 30 40
40 23 37

 

3.6m diameter antenna Model 8136 from ViaSat C + Ku bands (Offset geometry)

Elevation angle (deg) Noise temp (C band) (K) Noise temp (Ku band) (K)
10 24 31
20 16 23
30 15 21
20 14 20

Channelmaster series (In this table the elevation angle is in the columns)

Name/model Dia (m) Ku 10 deg  Ku 20 deg  Ku 30 deg C 10 deg C 20 deg C 30 deg
600 Tx 0.6 55 39 32      
750 Tx 0.75 50 36 30      
900 Tx 0.9 48 34 27      
960 Tx 0.96 53 39 32      
100 Tx 1 47 33 26      
120 Tx 1.2 45 37 34      
123 Tx 1.2 45 31 24    
180 Tx 1.8 43 28 23      
121 1.2 45 37 34 60 52 50
124 1.2 45 31 24      
183 1.8 44 36 33 41 36 33
184 1.8 48 34 33      
243 2.4 34 31 40 40 35 32
244 2.4 45 31 30      

Andrew series (In this table the elevation angle is in the columns)

Name/model Dia (m) Ku 10 deg  Ku 30 deg  Ku 50 deg C 10 deg C 30 deg C 50 deg
1.2 1.2 58 49 45 42 33 29
1.9 1.8 50 42 38 36 29 25
2.4 2.4 43 35 31 31 24 20
3 3 35 26 22 25 18 14
3.6 3.6 41 32 28 30 23 19

NEC series (In this table the elevation angle is in the columns)

Name/model Dia (m) . ..............  ...............  ............... C 10 deg C 30 deg C 50 deg
7.6 7.6       41 32 27
9.2 9.2       39 31 27
If you have more examples that can be added here please email me with details. Thankyou. Eric Johnston

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Last updated 11 Sept 2003, 9 Nov 2014