10
MGA-425P8 Typical Scattering Parameters (at 25°C, V
DS
= 3.3V, I
DS
= 80 mA)
Freq. S
11
S
21
S
12
S
22
MSG/MAG
GHz Mag. Ang. dB Mag. Ang. dB Mag. Ang. Mag. Ang.
0.1 0.79 -16.3 27.73 24.356 171.1 -34.89 0.018 79.5 0.628 -8.1 36.08
0.5 0.79 -65.7 26.07 20.124 144.5 -32.40 0.024 58.1 0.55 -33.1 29.24
0.9 0.807 -100.8 24.18 16.172 124.7 -29.12 0.035 42.1 0.439 -52.5 26.65
1 0.809 -107.6 23.68 15.273 120.8 -28.87 0.036 39 0.414 -56.6 26.28
1.5 0.825 -133.2 21.36 11.698 104.7 -27.54 0.042 27.1 0.312 -73.9 24.45
1.9 0.83 -147.1 19.75 9.712 95.1 -27.13 0.044 20 0.249 -84.6 23.44
2 0.835 -150.5 19.34 9.266 92.6 -26.94 0.045 18.7 0.239 -89.1 23.14
2.4 0.839 -160.4 17.91 7.863 85 -26.74 0.046 14 0.202 -99.5 22.33
3 0.845 -171.8 16.09 6.374 75.2 -26.56 0.047 8.6 0.169 -114.5 21.32
3.5 0.847 -179.5 14.81 5.501 68.2 -26.38 0.048 4.9 0.154 -123.6 20.59
3.9 0.845 175.4 13.84 4.918 62.5 -26.38 0.048 1.8 0.156 -131.3 20.11
4 0.855 174.2 13.50 4.732 62.8 -26.38 0.048 3 0.145 -140.4 19.94
4.5 0.853 168.2 12.63 4.282 56 -26.38 0.048 -0.3 0.144 -143.4 19.50
5 0.857 162.7 11.77 3.875 50.6 -26.20 0.049 -2.5 0.14 -150 18.98
5.1 0.857 161.7 11.62 3.81 49.3 -26.02 0.05 -3.1 0.139 -150.7 18.82
5.2 0.856 160.6 11.46 3.742 48.1 -26.02 0.05 -3.6 0.139 -150.8 18.74
5.3 0.856 159.6 11.30 3.673 46.9 -26.02 0.05 -4.2 0.141 -151.3 18.66
5.4 0.856 158.6 11.15 3.609 45.7 -26.02 0.05 -4.8 0.142 -152.8 18.58
5.5 0.856 157.6 10.99 3.544 44.5 -26.02 0.05 -5.4 0.141 -153.9 18.51
5.6 0.856 156.6 10.85 3.486 43.3 -26.02 0.05 -6 0.141 -154 18.43
5.7 0.858 155.6 10.69 3.423 42.1 -26.02 0.05 -6.7 0.144 -154.5 18.35
5.8 0.857 154.6 10.53 3.361 40.8 -25.85 0.051 -7.5 0.146 -155.6 18.19
6 0.862 153.5 10.09 3.196 38.3 -26.02 0.05 -8.7 0.158 -156.7 18.06
7 0.87 143.3 8.75 2.738 28 -26.20 0.049 -12.6 0.169 -171 17.47
8 0.862 133.3 7.58 2.392 16.9 -25.35 0.054 -17.2 0.164 175 16.46
9 0.869 122.3 6.67 2.156 6.5 -25.85 0.051 -23.3 0.187 154.1 14.70
10 0.875 111.8 5.70 1.928 -6.2 -25.19 0.055 -29.2 0.224 130.8 13.77
11 0.884 101.6 4.43 1.666 -17.2 -26.02 0.05 -33.6 0.251 113.3 12.01
12 0.898 91.8 3.54 1.503 -28 -25.68 0.052 -40.3 0.305 107.5 12.08
13 0.912 83.4 2.48 1.33 -39.4 -26.02 0.05 -45.5 0.359 100.3 11.95
14 0.915 75.6 1.31 1.163 -49.9 -26.20 0.049 -51.9 0.405 95.5 11.03
15 0.921 68.6 0.22 1.026 -59 -26.94 0.045 -55.5 0.442 92.1 10.25
16 0.908 60.3 -0.79 0.913 -68.6 -26.94 0.045 -61.2 0.477 87.6 8.48
17 0.893 52.5 -1.83 0.81 -77.6 -26.94 0.045 -64.9 0.507 81.7 6.76
18 0.905 44.4 -2.96 0.711 -87.2 -28.18 0.039 -63.9 0.537 72.4 6.09
Freq F
min
Γ
opt
Γ
opt
R
n/50
NF @
GHz dB Mag. Ang.
50 dB
0.9 0.86 0.1 -134.9 0.06 0.84
1.5 0.95 0.25 -173.6 0.06 1.03
1.9 1.03 0.27 -177.4 0.06 1.16
2 1.05 0.28 -177.7 0.06 1.19
2.4 1.1 0.31 178.9 0.06 1.32
3 1.19 0.37 -177.4 0.05 1.48
3.5 1.28 0.42 -174 0.05 1.68
3.9 1.35 0.44 -170.6 0.06 1.81
4.5 1.46 0.48 -167 0.06 2.01
5 1.53 0.5 -163.6 0.06 2.15
5.2 1.56 0.5 -161.8 0.07 2.17
5.5 1.62 0.52 -159.4 0.07 2.23
5.8 1.66 0.53 -157.8 0.07 2.44
6 1.7 0.54 -156.1 0.07 2.52
7 1.86 0.55 -147.8 0.12 2.8
8 2.03 0.56 -138.6 0.18 3.22
9 2.2 0.57 -125.5 0.31 3.52
10 2.37 0.63 -114.8 0.42 3.95
Note:
1. S Parameter is measured on a microstrip line made on 0.025 inch thick alumina carrier. The input reference plane is at the end of the gate lead.
The output reference plane is at the end of the drain lead.
Typical Noise Parameters, V
DS
= 3.3V, I
DS
= 80 mA
Figure 21. MSG/MAG & |S21|
2
vs.
Frequency at 3.3V, 80 mA.
MSG/MAG & |S21|
2
(dB)
40
30
20
10
0
-10
FREQUENCY (GHz)
0 105 15 20
MAG
MSG
S21