
TYPICAL COMMON EMITTER SCATTERING PARAMETERS
NE68133
V
CE
= 8 V, I
C
= 7 mA
FREQUENCY
Coordinates in Ohms
Frequency in GHz
(V
CE
= 8 V, I
C
= 10 mA)
S
11
S
21
S
12
S
22
K
MAG
1
(MHz)
100
200
500
1000
1500
2000
3000
MAG
0.802
0.639
0.344
0.170
0.115
0.098
0.137
ANG
-27.1
-49.2
-83.3
-113.4
-144.1
-176.3
137.6
MAG
17.578
14.213
7.671
4.126
2.870
2.254
1.669
ANG
153.8
134.2
105.5
86.7
75.3
66.2
53.2
MAG
0.023
0.039
0.065
0.109
0.160
0.212
0.313
ANG
68.7
69.8
67.8
73.5
74.8
74.7
73.2
MAG
0.918
0.783
0.579
0.491
0.454
0.438
0.409
ANG
-12.7
-19.9
-21.5
-17.7
-17.8
-16.9
-21.0
(dB)
28.8
25.6
20.7
15.2
11.2
9.0
7.3
0.37
0.46
0.81
1.01
1.05
1.04
0.99
100
200
500
1000
1500
2000
3000
0.744
0.553
0.277
0.134
0.092
0.079
0.122
-31.7
-54.5
-87.1
-115.8
-146.2
180.0
134.2
21.212
16.031
8.093
4.284
2.981
2.350
1.736
148.4
127.9
102.0
85.3
75.2
66.5
53.9
0.017
0.037
0.061
0.109
0.165
0.217
0.320
57.9
69.0
72.6
76.3
75.9
75.2
73.7
0.896
0.737
0.540
0.461
0.430
0.413
0.380
-14.6
-21.7
-20.9
-17.0
-16.5
-16.8
-21.3
0.50
0.54
0.88
1.04
1.04
1.03
0.99
31.0
26.4
21.2
14.7
11.3
9.3
7.3
V
CE
= 8 V, I
C
= 10 mA
100
200
500
1000
1500
2000
3000
0.594
0.389
0.175
0.089
0.064
0.070
0.120
-43.3
-66.3
-95.5
-127.5
-160.8
167.0
132.5
29.285
19.280
8.683
4.512
3.078
2.406
1.774
138.1
117.5
96.1
82.3
73.3
64.9
53.1
0.013
0.035
0.057
0.110
0.167
0.221
0.322
61.2
73.1
74.0
79.6
78.9
74.9
72.4
0.792
0.614
0.481
0.440
0.416
0.404
0.379
-19.4
-22.6
-16.5
-13.2
-13.9
-13.8
-19.4
0.57
0.69
0.98
1.03
1.04
1.02
0.98
33.5
27.4
21.8
15.1
11.4
9.5
7.4
V
CE
= 8 V, I
C
= 20 mA
100
200
500
1000
1500
2000
3000
0.557
0.354
0.158
0.080
0.065
0.076
0.127
-46.9
-70.7
-100.5
-136.1
-175.0
156.0
128.4
30.197
19.196
8.499
4.363
3.009
2.348
1.742
135.2
115.1
94.8
81.7
72.7
65.0
53.0
0.017
0.029
0.059
0.111
0.167
0.219
0.325
65.9
73.4
77.7
80.7
80.1
77.1
74.2
0.836
0.664
0.503
0.455
0.428
0.415
0.387
-17.4
-22.2
-17.7
-14.3
-14.2
-14.2
-19.7
0.50
0.67
0.95
1.03
1.03
1.03
0.98
32.5
28.2
21.6
14.9
11.5
9.2
7.3
V
CE
= 8 V, I
C
= 30 mA
MAG =
|S
21
|
|S
12
|
K - 1
).
(
K
±
= S
11
S
22
- S
21
S
12
,
When K
≤
1, MAG is undefined and MSG values are used. MSG =
|S
21
|
|S
12
|
, K =1 + |
| - |S
11
| - |S
22
|
2 |S
12
S
21
|
2
Note:
1. Gain Calculations:
NE681 SERIES
MAG = Maximum Available Gain
MSG = Maximum Stable Gain
j250
j150
j100
j50
-j50
-j25
j25
j10
-j10
0
0
-j100
-j150
-j250
10
500
250
150
100
50
25
10
S
11
2 GHz
S
11
0.1 GHz
S
22
0.1 GHz
S
22
2 GHz
120
90
60
30
150
180
-150
-120
-90
-60
-30
0
25
20
.15
.10
.05
S
21
2 GHz
S
21
0.1 GHz
S
21
20
15
10
25
S
12
2 GHz
S
12
0.1 GHz