ATF-531P8 Typical Scattering Parameters, VDS = 3V, IDS = 135 mA
Freq.
GHz
S11
Mag. Ang.
S21
dB Mag. Ang.
dB
S12
Mag.
0.1
0.823 -57.1
0.2
0.826 -95.6
0.3
0.842 -118.2
0.4
0.846 -133.1
0.5
0.851 -142.0
0.6
0.850 -149.2
0.7
0.855 -154.9
0.8
0.856 -159.5
0.9
0.859 -163.2
1
0.857 -166.3
1.5
0.857 -177.7
1.9
0.858 175.8
2
0.855 174.4
2.4
0.855 168.8
3
0.854 161.4
4
0.858 150.7
5
0.860 140.4
6
0.868 131.4
7
0.866 123.2
8
0.877 114.8
9
0.876 106.3
10
0.880 95.1
11
0.883 84.7
12
0.874 73.6
13
0.878 62.9
14
0.884 56.9
15
0.906 46.7
16
0.907 42.9
17
0.893 32.2
18
0.925 20.7
33.96
31.82
29.66
27.75
26.21
24.83
23.62
22.55
21.59
20.71
17.32
15.31
15.08
13.51
11.54
8.98
6.92
5.21
3.79
2.52
1.57
0.56
-0.46
-1.51
-2.56
-3.54
-4.70
-5.61
-6.80
-8.38
49.888
38.989
30.415
24.416
20.452
17.443
15.178
13.405
12.012
10.853
7.342
5.828
5.676
4.738
3.774
2.812
2.219
1.821
1.547
1.337
1.198
1.066
0.948
0.840
0.745
0.665
0.582
0.524
0.457
0.381
151.3
131.6
119.6
111.4
105.9
101.4
97.7
94.7
92.0
89.6
79.9
73.6
72.3
66.4
58.2
45.3
32.8
21.0
9.4
-2.0
-13.7
-26.0
-38.2
-49.6
-61.1
-71.0
-80.8
-88.0
-99.8
-107.2
-37.72
-33.98
-32.77
-32.04
-31.70
-31.37
-31.37
-31.06
-31.06
-30.75
-30.46
-29.90
-29.37
-29.12
-28.40
-27.13
-26.02
-24.88
-23.88
-22.85
-21.83
-21.11
-20.35
-19.83
-19.41
-18.94
-18.71
-18.49
-18.42
-18.86
0.013
0.020
0.023
0.025
0.026
0.027
0.027
0.028
0.028
0.029
0.030
0.032
0.034
0.035
0.038
0.044
0.050
0.057
0.064
0.072
0.081
0.088
0.096
0.102
0.107
0.113
0.116
0.119
0.120
0.114
Ang.
62.6
45.7
36.0
30.1
26.8
24.4
22.9
22.1
21.4
21.1
21.0
21.6
22.1
22.6
22.8
22.7
20.7
17.2
13.4
8.5
2.6
-5.0
-12.9
-20.7
-28.5
-35.9
-43.9
-51.4
-58.7
-66.3
S22
Mag. Ang.
0.427
0.418
0.421
0.420
0.419
0.419
0.419
0.420
0.421
0.419
0.418
0.418
0.410
0.403
0.409
0.423
0.440
0.457
0.475
0.490
0.502
0.519
0.530
0.566
0.613
0.652
0.670
0.704
0.747
0.717
-55.1
-92.8
-115.9
-130.7
-139.0
-146.4
-151.9
-156.1
-159.7
-162.6
-172.9
-178.2
-179.1
176.0
169.8
161.0
152.8
144.4
136.6
128.0
119.3
108.7
98.4
90.7
79.7
69.3
60.8
51.6
43.7
35.8
MSG/MAG
dB
35.84
32.90
31.21
29.90
28.96
28.10
27.50
26.80
26.32
25.73
23.89
22.60
22.23
21.32
19.97
16.15
13.82
12.31
10.81
10.00
9.09
8.20
7.31
6.06
5.32
4.87
4.76
4.29
2.90
2.20
Typical Noise Parameters, VDS = 3V, IDS = 135 mA
Freq
Fmin
GHz
dB
Γopt
Mag.
Γopt
Ang.
Rn/50
0.5
0.25
0.20
166.00
0.020
0.9
0.30
0.25
169.00
0.022
1
0.30
0.35
171.00
0.018
1.5
0.36
0.40
173.00
0.019
2
0.45
0.46
176.80
0.020
2.4
0.52
0.52
-174.70 0.021
3
0.66
0.56
-169.80 0.025
3.5
0.70
0.62
-162.80 0.028
3.9
0.87
0.65
-157.90 0.042
5
1.02
0.67
-145.70 0.082
5.8
1.13
0.71
-136.80 0.140
6
1.24
0.73
-135.10 0.175
7
1.34
0.82
-126.20 0.380
8
1.58
0.83
-116.90 0.645
9
1.78
0.81
-107.50 0.870
10
1.88
0.83
-95.40
1.350
Ga
dB
28.47
24.36
24.24
21.17
19.30
18.08
16.26
15.33
14.62
12.52
11.53
11.40
10.57
9.67
8.59
7.76
40
30
MSG
20
MAG
10
S21
0
-10
0
5
10
15
20
FREQUENCY (GHz)
Figure 32. MSG/MAG & |S21|2 (dB)
@ 3V, 135 mA.
Notes:
1. Fmin values at 2 GHz and higher are based on measurements while the Fmins below 2 GHz have been extrapolated. The Fmin values are based on a set of
16 noise figure measurements made at 16 different impedances using an ATN NP5 test system. From these measurements a true Fmin is calculated.
2. S and noise parameters are 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.
12