Chapter 5. Redundancy; Typical System Noise Temperature; 1:1 Redundant Lna System; 1:2 Redundant Lna System - Comtech EF Data LNAS Installation And Operation Manual

5.1

Typical System Noise Temperature

5.1.1

1:1 Redundant LNA System

T = T
system LNA
5.1.2

1:2 Redundant LNA System

RF Input 1:LNA online signal path
T = T
system LNA
RF Input 1:LNA 3 online signal path (LNA 1 Standby)
T = T
system LNA
RF Input 2:LNA 2 online signal path
T = T
system LNA
RF Input 1:LNA 3 online signal path (LNA 2 Standby)
T = T
system LNA
Band (GHz)
Item
TSWITCH
TW1
TW2
TOPTION1
TOPTION3
Redundancy

Chapter 5. REDUNDANCY

+ T + T + T
SWITCH OPTION 3
+ T + T + T
SWITCH OPTION 3
+ 2*T + T + T
SWITCH W2 OPTION 3
= T +T + T
W1 SWITCH OPTION 3
+ 2*T + T + T
SWITCH W1 W2
Table 5-1. Typical Noise Temperature in Kelvin at 23°C
3.62 to 4.205
WR229
1.50
1.50
1.50
0.50
2.40
OPTION 1
OPTION 1
+ T
OPTION 1
+ T
OPTION 1
+ T + T
OPTION 3 OPTION 1
3.4 to 4.2 10.7 to 12.75
WR229 WR75
1.50
1.50
1.50
0.50
7.00
5–1
Low Noise Amplifier Series
Revision 2
Ka-Band
WR42
3.50 10.00
4.00 7.00
4.00 7.00
2.00 10.00
7.00 NA
MN-LNAS