THN4201U Datasheet, PDF (5/12 Pages) AUK corp – SiGe NPN Transistor

Transition Frequency, f_T vs. I_C
22
20
f = 2 GHz
18
V_CE = 3 V
16
14
V_CE = 1 V
12
10
8
6
0
5 10 15 20 25 30 35
I_C [mA]
NF vs. I_C
V_CE = 3 V, I_C = parameter, Z_S = Z_Sopt
3
2.5
2
f = 2 GHz
1.5
1
f = 1 GHz
0.5
0
5
10
15
20
25
30
I_C [mA]
THN4201 Series
C_CB vs. V_CB
0.6
f = 1 MHz
0.55
0.5
0.45
0.4
0
2
4
6
8
10
V_CB [V]
Noise Figure Contours & Constant Gain
f = 1 GHz or 2GHz, V_CE = 3 V, I_C = 5 mA
G_A = 13 dB
= 14 dB
= 15 dB
3 contour
G_A = 10
dB
= 9 dB
= 8 dB
3t
f = 1GHz
Γ_OPT=0.224∠96
NF = 1.05 dB
= 1.1 dB
= 1.2 dB
3 contour
f = 2GHz
Γ_OPT=0.330∠-166
NF = 1.45 dB
= 1.5 dB
= 1.6 dB
3 contour
5