Gain Calculations
~S21~
MSG. =
~S12~
1 + ~'~2 ð ~S11~2 ð ~S22~2
K=
2~S12~~S21~
NE32584C
MAG. = ~S21~ (K r—K2ð1)
~S12~
' = S11 • S22 ð S21 • S12
NOISE FIGURE, ASSOCIATED GAIN vs.
FREQUENCY
24
VDS = 2 V
ID = 10 mA
20
Ga
16
1.0
12
0.5
0
1
8
NF
4
2
4 6 8 10 14 20 30
f - Frequency - GHZ
NOISE FIGURE, ASSOCIATED GAIN vs.
DRAIN CURRENT
VDS = 2 V
f = 12 GHZ
14
Ga
13
12
2.0
11
1.5
10
1.0
0.5
NF
0
10
20
30
ID - Drain Current - mA
3