Common Emitter Y Parameters vs. Frequency
NPN RF Transistor
(continued)
Input Admittance vs Collector
Current-Output Short Circuit
2
f = 10.7 MHz
VCE= 10V
1.6
g ie
1.2
0.8
b ie
0.4
0
0
2
4
6
8
10
I C - COLLECTOR CURRENT (mA)
Input Admittance vs Collector
Current-Output Short Circuit
10
f = 100 MHz
8
VCE= 10V
6
VCE = 5V
4
VCE= 10V
2
VCE = 5V
0
0
2
4
6
8
10
I C - COLLECTOR CURRENT (mA)
Input Admittance vs
Frequency-Output Short Circuit
25
Ic = 5.0 mA
g ie
VCE= 10V
20
15
10
5
b ie
0
10
20
50
100
200
500 1000
f - FREQUENCY (MHz)
Forward Transfer Admittance vs
Frequency-Output Open Circuit
100
I c = 5.0 mA
VCE = 10V
80
60
40
20
0
10
-b fe
g fe
20
50
100
200
500 1000
f - FREQUENCY (MHz)
Forward Trans. Admittance vs Collector
Current-Output Short Circuit
120
f = 10.7 MHz
100 VCE= 10V
g fe
80
60
40
20
-b fe
0
0
2
4
6
8
10
IC - COLLECTOR CURRENT (mA)
Forward Trans. Admittance vs Collector
Current-Output Short Circuit
100
f = 100 MHz
VCE= 10V
80
VCE = 5.0V
60
VCE = 5.0V
40 g fe
VCE= 10V
20
-b fe
0
0
2
4
6
8
10
I C - COLLECTOR CURRENT (mA)