
V
CE
= 8 V, I
C
= 7 mA
FREQUENCY
(MHz)
S
11
S
21
S
12
S
22
MAG
K
MAG
1
(dB)
MAG
ANG
MAG
ANG
MAG
ANG
ANG
100
5 00
1000
1500
2000
3000
4000
5000
.836
.659
.585
.557
.562
.561
.562
.563
-26.1
-105.0
-146.1
-167.0
-180.0
159.6
142.8
127.0
18.427
11.481
6.625
4.555
3.507
2.413
1.854
1.516
160.4
114.7
90.3
75.5
63.9
43.4
25.1
8.0
.014
.041
.051
.058
.068
.088
.113
.142
73.6
44.3
38.3
39.3
41.3
43.1
41.9
38.7
.959
.654
.512
.472
.462
.468
.490
.522
-11.3
-33.2
-38.5
-43.1
-49.4
-64.3
-80.4
-96.0
0.16
0.38
0.68
0.93
1.02
1.11
1.07
0.98
31.1
24.4
21.1
18.9
16.4
12.4
10.6
10.3
100
500
1000
1500
2000
3000
4000
5000
.781
.609
.558
.540
.547
.549
.551
.551
-32.1
-117.6
-154.7
-173.1
175.3
156.5
140.6
125.2
24.097
13.015
7.233
4.925
3.778
2.590
1.990
1.629
157.2
109.6
87.5
73.9
62.9
43.3
25.5
8.7
.013
.036
.045
.055
.067
.091
.119
.149
73.4
44.6
43.2
45.8
47.6
47.4
44.2
39.4
.937
.582
.457
.425
.420
.428
.452
.486
-13.9
-35.2
-38.5
-42.6
-48.8
-63.7
-79.7
-95.2
0.15
0.47
0.79
1.00
1.05
1.09
1.05
0.96
32.6
25.6
22.0
19.4
16.1
12.7
10.9
10.4
100
500
1000
1500
2000
3000
4000
5000
.654
.547
.535
.527
.534
.541
.544
.544
-49.9
-139.7
-168.1
-177.7
168.5
151.9
137.2
122.7
36.807
14.980
7.916
5.328
4.072
2.780
2.131
1.745
149.3
101.5
83.2
71.3
61.1
42.7
25.5
9.0
.012
.027
.038
.051
.065
.094
.124
.156
67.4
49.0
53.7
56.2
56.6
53.4
47.8
41.3
.877
.475
.392
.375
.376
.389
.415
.451
-19.2
-34.9
-35.7
-39.9
-46.5
-61.9
-78.1
-93.7
0.21
0.66
0.95
1.08
1.09
1.07
1.01
0.94
35.0
27.5
23.2
18.4
16.2
13.1
11.6
10.5
100
500
1000
1500
2000
3000
4000
5000
.575
.539
.537
.532
.541
.549
.552
.553
-64.1
-150.2
-173.7
173.7
165.5
149.8
135.7
121.2
43.452
15.238
7.926
5.318
4.058
2.767
2.118
1.731
144.0
97.9
81.2
69.9
60.1
41.9
24.9
8.5
.010
.023
.036
.049
.064
.094
.125
.157
64.1
52.7
58.9
60.7
60.2
55.9
49.8
42.9
.831
.441
.381
.370
.374
.390
.416
.453
-21.9
-32.3
-32.9
-37.8
-44.9
-60.9
-77.4
-93.3
0.26
0.77
1.01
1.11
1.09
1.06
1.00
0.92
36.3
28.2
22.7
18.3
16.1
13.2
12.1
10.4
NE68135
Coordinates in Ohms
Frequency in GHz
(V
CE
= 8 V, I
C
= 10 mA)
TYPICAL COMMON EMITTER SCATTERING PARAMETERS
NE681 SERIES
V
CE
= 8 V, I
C
= 10 mA
V
CE
= 8 V, I
C
= 20 mA
V
CE
= 8 V, I
C
= 30 mA
5 GHz
5 GHz
S
21
0.1 GHz
S
12
0.1 GHz
5 GHz
5 GHz
S
22
0.1 GHz
S
11
0.1 GHz
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:
MAG = Maximum Available Gain
MSG = Maximum Stable Gain