BFP405_13 Datasheet, PDF (6/9 Pages) Infineon Technologies AG – Low Noise Silicon Bipolar RF Transistor

Noise figure F = ƒ(I_C)
V_CE = 2 V, Z_S = Z_Sopt
Noise figure F = ƒ(I_C)
V_CE = 2 V, f = 1.8 GHz
BFP405
4
4
dB
dB
3
2.5
2
1.5
1
0.5
0
0
2
4
6
Noise figure F = ƒ(f)
V_CE = 1 V, Z_S = Z_Sopt
f = 6 GHz
f = 5 GHz
f = 4 GHz
f = 3 GHz
f = 2.4 GHz
f = 1.8 GHz
f = 0.9 GHz
8 mA
12
I_C
3
dB
2
1.5
1
IC = 5 mA
IC = 2 mA
0.5
0
0
1
2
3
4 GHz
6
f
3
2.5
2
1.5
ZS = 50 Ohm
1
ZS = ZSopt
0.5
0
0
2
4
6
8
Source impedance for min.
noise figure vs. frequency
V_CE = 3 V, I_C = 2 mA / 5 mA
mA
12
I_C
+j50
+j25
+j100
+j10
0
10
4GHz
5GHz
3GHz
6GHz
25
50 100
1.8GHz
0.9GHz
2mA
-j10
5mA
-j25
-j100
-j50
6
2013-09-19