THN420Z Datasheet, PDF (5/5 Pages) AUK corp – SiGe NPN Transistor

Power Gain
vs. Frequency
30
V =2V
CE
25
I = 5 mA
C
MSG
20
15
|S |2
21
10
MAG
5
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
THN420Z
30
V =2V
CE
25
I = 15 mA
C
MSG
20
MAG
15
|S |2
21
10
5
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
Noise Figure
vs. Collector Current
at V_CE = 2 V, I_C =parameters, Z_S = Z_Sopt
3.0
f = 1.8 GHz
2.5
2.0
1.5
1.0
0.5
0.0
0 5 10 15 20 25 30 35 40
Collector Current, I (mA)
C
Noise Figure and
Associated Gain Contours
at V_CE = 2 V, I_C = 5 mA, f = 1.8 GHz
Output
Stable
Input
Stable
Ga=17dB
=16dB
=15dB
=14dB
=13dB
5 contour
Γopt = 0.155∠92
Fmin =1.05dB
=1.1dB
=1.2dB
=1.3dB
4 contour
5