5
AT-31625 Typical Scattering Parameters, Common Emitter, ZO = 50 Ω
VCE = 3.0 V, Ic = 200 mA, Tc = 25°C
Freq. S11 S21 S12 S22
GHz Mag. Ang. dB Mag. Ang. dB Mag. Ang. Mag. Ang.
0.05 0.72 -150 30.7 34.19 113 -34.0 0.02 40 0.56 -120
0.10 0.77 -166 25.3 18.43 99 -34.0 0.02 42 0.52 -148
0.25 0.79 179 17.5 7.54 86 -28.0 0.04 57 0.51 -169
0.50 0.79 169 11.6 3.81 74 -23.1 0.07 64 0.51 -178
0.75 0.79 161 8.2 2.58 65 -20.9 0.09 63 0.52 177
0.90 0.79 156 6.7 2.17 59 -19.2 0.11 62 0.52 175
1.00 0.79 153 5.9 1.97 56 -18.4 0.12 61 0.52 174
1.25 0.79 146 4.1 1.61 48 -16.5 0.15 58 0.53 170
1.50 0.79 140 2.7 1.37 40 -14.9 0.18 54 0.54 167
1.75 0.79 133 1.7 1.21 32 -13.6 0.21 49 0.54 164
2.00 0.79 126 0.7 1.09 26 -12.8 0.23 45 0.55 160
2.25 0.79 120 0.0 1.00 19 -11.7 0.26 41 0.55 156
2.50 0.79 114 -0.6 0.93 13 -11.1 0.28 36 0.56 152
VCE = 3.6 V, Ic = 200 mA, Tc = 25°C
0.05 0.71 -148 31.2 36.39 114 -34.0 0.02 41 0.56 -117
0.10 0.76 -165 25.9 19.69 100 -34.0 0.02 43 0.51 -146
0.25 0.78 180 18.1 8.06 86 -28.0 0.04 57 0.50 -168
0.50 0.78 169 12.2 4.07 75 -24.4 0.06 64 0.50 -177
0.75 0.78 161 8.8 2.75 65 -20.9 0.09 64 0.51 178
0.90 0.78 156 7.3 2.31 60 -19.2 0.11 62 0.51 176
1.00 0.78 153 6.4 2.10 56 -18.4 0.12 61 0.51 174
1.25 0.78 146 4.7 1.71 48 -16.5 0.15 58 0.52 171
1.50 0.78 140 3.3 1.46 40 -14.9 0.18 54 0.53 168
1.75 0.78 133 2.1 1.28 33 -14.0 0.20 50 0.54 164
2.00 0.78 127 1.3 1.16 26 -12.8 0.23 46 0.54 161
2.25 0.78 121 0.4 1.05 19 -11.7 0.26 41 0.55 157
2.50 0.78 115 -0.2 0.98 13 -11.1 0.28 37 0.55 153
VCE = 4.8 V, Ic = 200 mA, Tc = 25°C
0.05 0.70 -145 31.7 38.47 115 -34.0 0.02 41 0.56 -114
0.10 0.75 -164 26.4 20.90 100 -34.0 0.02 43 0.50 -144
0.25 0.77 -180 18.7 8.57 87 -28.0 0.04 57 0.49 -167
0.50 0.77 169 12.7 4.33 75 -24.4 0.06 64 0.49 -176
0.75 0.77 161 9.3 2.92 66 -20.9 0.09 64 0.49 179
0.90 0.77 157 7.8 2.45 60 -19.2 0.11 62 0.50 176
1.00 0.77 154 7.0 2.23 57 -18.4 0.12 61 0.50 175
1.25 0.77 147 5.2 1.81 48 -16.5 0.15 58 0.51 172
1.50 0.77 140 3.8 1.54 41 -14.9 0.18 54 0.51 168
1.75 0.77 134 2.6 1.35 33 -14.0 0.20 50 0.52 165
2.00 0.77 127 1.7 1.22 27 -12.8 0.23 46 0.53 162
2.25 0.77 121 0.9 1.11 20 -12.0 0.25 41 0.54 158
2.50 0.77 115 0.3 1.03 13 -11.1 0.28 37 0.54 154
Typical Performance
-5
0
35
5
10
15
20
25
30
0.05 0.25 0.75 2.502.00
GAIN
(dB)
FREQUENCY (GHz)
Figure 9. Insertion Power Gain,
Maximum Available Gain, and Maximum
Stable Gain vs. Frequency. V
CE
= 3.0 V,
Ic = 200 mA.
1.00 1.50
MSG
MAG
MSG
|S
21
|
2
-5
0
35
5
10
15
20
25
30
0.05 0.25 0.75 2.502.00
GAIN
(dB)
FREQUENCY (GHz)
Figure 10. Insertion Power Gain,
Maximum Available Gain, and Maximum
Stable Gain vs. Frequency. V
CE
= 3.6 V,
Ic = 200 mA.
1.00 1.50
MSG
MAG
MSG
|S
21
|
2
0
35
5
10
15
20
25
30
0.05 0.25 0.75 2.502.00
GAIN
(dB)
FREQUENCY (GHz)
Figure 11. Insertion Power Gain,
Maximum Available Gain, and Maximum
Stable Gain vs. Frequency. V
CE
= 4.8 V,
Ic = 200 mA.
1.00 1.50
MSG
MAG
MSG
|S
21
|
2