ATF-531P8 Typical Scattering Parameters at 25°C,
V
DS
= 4V, I
DS
= 180 mA
Freq.
GHz
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
S
11
Mag.
0.626
0.704
0.761
0.794
0.815
0.824
0.834
0.840
0.845
0.848
0.854
0.857
0.853
0.853
0.855
0.858
0.864
0.871
0.869
0.880
0.883
0.884
0.874
0.874
0.877
0.884
0.894
0.896
0.898
0.918
Ang.
-59.4
-97.4
-119.4
-133.8
-142.5
-149.6
-155.1
-159.7
-163.3
-166.4
-177.7
175.9
174.4
168.9
161.6
150.8
140.7
131.7
123.5
115.2
106.8
95.7
85.1
74.1
63.3
57.9
46.8
43.3
31.9
20.8
dB
33.20
31.41
29.53
27.78
26.32
24.99
23.82
22.76
21.83
20.96
17.59
15.60
15.36
13.79
11.83
9.27
7.20
5.48
4.04
2.73
1.77
0.70
-0.34
-1.39
-2.52
-3.64
-4.81
-5.66
-7.25
-8.61
S
21
Mag.
45.702
37.192
29.950
24.477
20.693
17.760
15.516
13.742
12.346
11.164
7.579
6.024
5.863
4.894
3.902
2.906
2.292
1.879
1.593
1.370
1.226
1.084
0.962
0.852
0.748
0.658
0.575
0.521
0.434
0.371
Ang.
154.5
135.8
123.5
114.8
108.9
103.9
99.9
96.6
93.6
91.0
80.6
73.9
72.6
66.5
57.9
44.6
31.6
19.4
7.5
-4.3
-16.1
-29.0
-41.6
-52.8
-64.5
-74.6
-85.4
-93.6
-102.6
-110.5
dB
-40.00
-35.92
-34.42
-33.56
-32.77
-32.77
-32.40
-32.40
-32.04
-32.04
-31.37
-30.75
-30.46
-29.90
-29.12
-27.74
-26.56
-25.35
-24.29
-23.35
-22.27
-21.41
-20.63
-19.91
-19.49
-19.02
-18.71
-18.49
-18.49
-18.94
S
12
Mag.
0.010
0.016
0.019
0.021
0.023
0.023
0.024
0.024
0.025
0.025
0.027
0.029
0.030
0.032
0.035
0.041
0.047
0.054
0.061
0.068
0.077
0.085
0.093
0.101
0.106
0.112
0.116
0.119
0.119
0.113
Ang.
62.6
48.8
39.1
33.7
30.0
27.4
25.8
24.6
24.2
23.8
23.5
24.4
24.9
25.8
26.6
26.5
24.3
21.2
17.4
12.6
7.0
-0.8
-8.8
-16.6
-24.6
-31.9
-39.8
-47.8
-55.1
-62.6
S
22
Mag. Ang.
0.410
0.384
0.370
0.360
0.355
0.351
0.349
0.349
0.349
0.347
0.344
0.344
0.335
0.339
0.337
0.356
0.378
0.402
0.427
0.449
0.465
0.489
0.505
0.544
0.596
0.638
0.662
0.699
0.748
0.718
-44.4
-79.2
-101.8
-117.6
-127.1
-135.5
-141.9
-146.9
-151.1
-154.3
-165.8
-171.2
-171.8
-176.8
177.0
168.5
160.6
152.4
144.6
136.1
127.4
116.6
106.0
97.2
85.9
74.7
65.9
56.1
47.7
39.3
MSG/MAG
dB
36.60
33.66
31.98
30.67
29.54
28.88
28.11
27.58
26.94
26.50
24.48
23.17
22.91
21.85
19.60
16.23
14.19
12.69
11.18
10.39
9.70
8.70
7.20
6.30
5.46
4.95
4.29
4.06
2.82
1.75
Typical Noise Parameters at 25°C,
V
DS
= 4V, I
DS
= 180 mA
MSG/MAG & |S21|
2
(dB)
Freq
GHz
0.5
0.9
1
1.5
2
2.4
3
3.5
3.9
5
5.8
6
7
8
9
10
F
min
dB
0.50
0.59
0.60
0.72
0.81
0.90
1.01
1.10
1.13
1.34
1.48
1.58
1.68
1.89
2.15
2.34
Γ
opt
Mag.
0.20
0.25
0.35
0.40
0.57
0.61
0.63
0.67
0.70
0.72
0.75
0.76
0.80
0.84
0.82
0.85
Γ
opt
Ang.
166.00
169.00
171.00
173.00
-173.50
-167.70
-163.50
-158.20
-153.90
-142.70
-135.40
-133.30
-125.00
-116.10
-106.90
-95.10
R
n/50
0.041
0.044
0.036
0.039
0.029
0.033
0.041
0.054
0.068
0.139
0.229
0.278
0.470
0.860
1.170
2.010
G
a
dB
28.26
24.27
24.15
21.14
20.07
18.73
16.91
15.86
15.12
13.08
12.04
11.82
10.69
9.97
8.96
8.09
40
30
MSG
20
MAG
10
S21
0
-10
0
5
10
FREQUENCY (GHz)
15
20
Figure 28. MSG/MAG & |S21|
2
(dB)
@ 4V, 180 mA.
Notes:
1. F
min
values at 2 GHz and higher are based on measurements while the F
mins
below 2 GHz have been extrapolated. The F
min
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 F
min
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.
8
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
