BFP520_10 Datasheet, PDF (6/10 Pages) Infineon Technologies AG – NPN Silicon RF Transistor

Noise figure F = ƒ(I_C)
V_CE = 2 V, f = 1.8 GHz
3
dB
BFP520
Minimum noise figure NF_min= ƒ(f)
V_CE = 2 V, Z_S = Z_Sopt
3
dB
2
1.5
1
Zs = 50Ohm
Zs = Zsopt
0.5
0
0 5 10 15 20 25 30 mA 40
I_C
Source impedance for min.
noise figure vs. frequency
V_CE = 2 V, I_C = 2 mA / 5 mA
+j50
+j25
+j100
+j10
0
10
-j10
4GHz
3GHz
5GHz
6GHz
25
50 100
1.8GHz
0.9GHz
0.45GHz
2mA
5mA
-j25
-j100
-j50
2
1.5
1
IC = 5 mA
0.5
IC = 2 mA
0
0
1
2
3
4
5 GHz 6.5
f
2010-08-16