TYPICAL COMMON EMITTER SCATTERING PARAMETERS
Coordinates in Ohms
Frequency in GHz
(VCE = 2.5 V, IC = 3 mA)
NE68119
50 0.995 -6.1 1.283 174.1 0.017 88.1 0.997 -1.1 0.02 18.8
100 0.992 -11.9 1.081 170.4 0.027 80.9 0.995 -4.5 0.06 16.0
200 0.981 -23.5 1.038 158.4 0.052 74.0 0.991 -9.3 0.11 13.0
300 0.967 -35.3 1.021 149.2 0.078 65.0 0.989 -14.3 0.15 11.2
400 0.950 -46.1 0.985 139.2 0.096 58.4 0.979 -18.2 0.20 10.1
500 0.929 -57.0 0.952 130.0 0.114 52.4 0.962 -22.5 0.23 9.2
600 0.915 -67.0 0.936 121.0 0.130 44.5 0.948 -26.4 0.30 8.6
700 0.892 -77.0 0.888 112.7 0.144 38.5 0.937 -30.1 0.33 7.9
800 0.874 -86.0 0.869 105.0 0.153 32.7 0.928 -33.9 0.36 7.5
900 0.853 -94.5 0.808 97.2 0.160 27.3 0.916 -37.1 0.42 7.0
1000 0.838 -102.9 0.784 90.6 0.165 21.8 0.908 -40.5 0.45 6.8
1500 0.770 -139.2 0.652 61.2 0.169 1.6 0.869 -54.5 0.66 5.9
2000 0.723 -170.6 0.564 39.0 0.146 -12.7 0.842 -66.5 0.95 5.9
3000 0.693 132.2 0.441 9.0 0.085 6.0 0.803 -91.2 1.98 1.5
50 0.937 -13.0 10.816 167.8 0.014 85.2 0.970 -5.3 0.08 28.9
100 0.904 -22.9 9.618 161.4 0.023 76.5 0.955 -12.0 0.10 26.2
200 0.839 -44.6 8.856 145.9 0.044 65.5 0.907 -21.5 0.16 23.0
300 0.771 -63.4 7.858 133.0 0.061 55.3 0.830 -29.5 0.25 21.1
400 0.699 -79.9 6.982 121.6 0.071 48.3 0.761 -35.9 0.32 19.9
500 0.642 -93.8 6.172 112.2 0.080 42.4 0.699 -39.7 0.41 18.9
600 0.598 -106.0 5.458 104.1 0.086 38.7 0.651 -43.3 0.48 18.0
700 0.564 -116.4 4.898 97.3 0.089 36.7 0.613 -46.0 0.55 17.4
800 0.534 -125.9 4.429 91.1 0.093 34.0 0.587 -48.2 0.62 16.8
900 0.511 -134.1 4.032 85.5 0.095 33.3 0.565 -50.1 0.69 16.3
1000 0.494 -141.6 3.696 80.6 0.099 32.1 0.549 -52.3 0.74 15.7
1500 0.438 -172.6 2.618 59.5 0.113 29.1 0.508 -59.9 0.99 13.6
2000 0.409 162.4 2.042 41.8 0.130 28.7 0.485 -67.6 1.15 9.6
3000 0.410 117.0 1.474 11.1 0.187 24.2 0.448 -85.5 1.16 6.5
50 0.979 -8.4 4.317 172.8 0.016 87.7 0.990 -1.3 0.04 24.3
100 0.965 -15.9 3.510 166.3 0.026 77.4 0.986 -7.5 0.10 21.3
200 0.944 -30.0 3.384 155.6 0.049 71.9 0.971 -13.0 0.09 18.4
300 0.915 -44.6 3.234 145.3 0.069 60.3 0.949 -19.4 0.15 16.7
400 0.877 -57.8 3.069 134.8 0.090 54.9 0.918 -24.6 0.17 15.3
500 0.836 -70.1 2.855 125.6 0.104 45.7 0.883 -29.1 0.25 14.4
600 0.802 -81.8 2.671 116.9 0.115 40.8 0.850 -33.4 0.28 13.7
700 0.770 -92.3 2.502 109.0 0.122 34.6 0.822 -37.2 0.33 13.1
800 0.741 -102.0 2.341 102.0 0.127 29.9 0.798 -40.6 0.38 12.7
900 0.714 -110.7 2.195 95.1 0.133 25.9 0.778 -43.4 0.43 12.2
1000 0.694 -118.7 2.041 89.4 0.135 21.6 0.762 -46.4 0.48 11.8
1500 0.616 -153.7 1.547 63.8 0.132 9.1 0.706 -58.1 0.75 10.7
2000 0.572 177.3 1.255 43.4 0.124 6.7 0.672 -68.2 1.07 8.4
3000 0.555 125.5 0.940 10.4 0.132 20.2 0.627 -89.7 1.41 4.7
VCE = 2.5 V, IC = 0.3 mA
FREQUENCY S11 S21 S12 S22 K MAG
1
(MHz) MAG ANG MAG ANG MAG ANG MAG ANG (dB)
VCE = 2.5 V, IC = 1.0 mA
VCE = 2.5 V, IC = 3 mA
NE681 SERIES
See note on next page.
j50
j25
j10
0
-j10
-j25
-j50
-j100
j100
0
10 25 50 100
S
11
5 GHz
S
11
0.05 GHz
S
22
5 GHz
S
22
0.05 GHz
120˚
90˚
60˚
30˚
150˚
180˚
-150˚
-120˚
-90˚
-60˚
-30˚
0˚
10
8
6
4
0.50.30.2
S12
0.5 GHz
S21
5 GHz
S21
S21
0.5 GHz
S12
5 GHz