ATF-531P8 Typical Scattering Parameters, VDS = 5V, IDS = 135 mA
Freq.
GHz
S11
S21
Mag.
S12
Mag.
S22
MSG/MAG
dB
Mag.
Ang.
dB
Ang.
dB
Ang.
Mag. Ang.
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.5
1.9
2
2.4
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
0.805
0.815
0.831
0.839
0.844
0.846
0.850
0.852
0.855
0.854
0.855
0.857
0.851
0.851
0.852
0.857
0.859
0.870
0.867
0.877
0.881
0.885
0.892
0.875
0.883
0.886
0.913
0.908
0.891
0.928
-56.0
-94.0
-116.9
-131.7
-140.9
-148.3
-154.0
-158.7
-162.5
-165.6
-177.1
176.3
174.9
169.4
161.8
151.1
141.0
131.8
123.6
115.6
106.7
95.6
34.11 50.734
32.03 39.967
29.97 31.517
28.10 25.418
26.58 21.322
25.20 18.207
24.00 15.852
22.93 14.014
21.98 12.559
21.10 11.351
17.71 7.681
15.71 6.099
15.46 5.931
13.89 4.946
11.92 3.943
152.1
132.6
120.5
112.1
106.4
101.8
98.0
94.8
92.0
89.6
79.5
73.0
71.7
65.6
57.1
43.9
30.9
18.5
6.5
-39.17 0.011
-34.89 0.018
-33.56 0.021
-32.77 0.023
-32.40 0.024
-32.04 0.025
-31.70 0.026
-31.70 0.026
-31.70 0.026
-31.37 0.027
-31.06 0.028
-30.46 0.030
-30.17 0.031
-29.63 0.033
-29.12 0.035
-27.74 0.041
-26.56 0.047
-25.51 0.053
-24.44 0.060
-23.48 0.067
-22.38 0.076
-21.41 0.085
-20.72 0.092
-20.00 0.100
-19.66 0.104
-19.09 0.111
-18.71 0.116
-18.56 0.118
-18.49 0.119
-18.86 0.114
62.6
46.6
36.3
30.7
27.2
24.9
23.3
22.3
21.6
20.9
21.1
22.3
22.3
23.3
24.3
24.4
22.8
19.7
16.3
11.8
6.1
0.468
0.419
0.387
0.364
0.354
0.346
0.342
0.339
0.337
0.335
0.331
0.331
0.336
0.315
0.323
0.343
0.367
0.391
0.417
0.440
0.458
0.482
0.500
0.540
0.593
0.636
0.660
0.699
0.747
0.717
-45.2
-79.7
-102.0
-117.9
-127.0
-135.4
-141.6
-146.5
-150.5
-153.9
-165.0
-170.4
-170.9
-175.8
178.2
169.9
162.1
154.0
146.2
137.7
129.1
118.1
107.5
98.6
36.64
33.46
31.76
30.43
29.49
28.62
27.85
27.32
26.84
26.24
24.38
23.08
22.82
21.76
19.82
16.43
14.19
12.82
11.24
10.41
9.75
9.35
7.30
5.57
4.11
2.80
1.82
0.75
2.935
2.318
1.899
1.605
1.381
1.233
1.090
-5.2
-17.0
-30.1
-42.9
-54.3
-65.9
-76.4
-86.8
-94.4
-105.1
-112.1
-1.3
-9.1
8.94
8.31
6.52
5.87
5.23
6.01
4.78
2.98
85.2
74.2
63.8
57.9
47.4
43.1
32.2
20.6
-0.30 0.966
-1.33 0.858
-2.49 0.751
-3.58 0.662
-4.78 0.577
-5.81 0.512
-6.99 0.447
-8.64 0.370
-17.0
-24.8
-31.8
-40.3
-47.8
-54.9
-62.6
87.1
75.8
66.8
57.0
48.4
39.9
2.41
Typical Noise Parameters, VDS = 5V, IDS = 135 mA
40
30
20
10
0
Freq
GHz
Fmin
dB
Γopt
Mag.
Γopt
Ang.
Rn/50
Ga
dB
MSG
0.5
0.9
1
1.5
2
2.4
3
3.5
3.9
5
5.8
6
7
8
9
0.45
0.48
0.50
0.55
0.65
0.70
0.77
0.84
0.90
1.06
1.20
1.19
1.40
1.52
1.75
1.88
0.20
0.32
0.35
0.40
0.46
0.49
0.55
0.58
0.62
0.66
0.69
0.69
0.77
0.81
0.82
0.85
154.00
160.00
166.00
170.00
177.40
-175.10
-168.90
-162.60
-158.20
-145.80
-137.30
-135.40
-126.50
-117.90
-107.50
-95.60
0.037
0.032
0.030
0.030
0.030
0.032
0.031
0.037
0.043
0.085
0.140
0.150
0.320
0.550
0.890
1.530
28.85
25.13
24.43
21.26
19.38
17.90
16.33
15.23
14.60
12.66
11.60
11.38
10.55
9.84
MAG
S21
-10
0
5
10
FREQUENCY (GHz)
15
20
Figure 31. MSG/MAG & |S21|2 (dB)
@ 5V, 135 mA.
9.05
8.29
10
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.
11
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