MRF947 Motorola, MRF947 Datasheet - Page 12

• Manufacturer Part Number: MRF947
• Description: High-Frequency Transistors
• Manufacturer: Motorola

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+ j0.2
MMBR941 MRF947 MRF9411 SERIES
2–12
+ j0.2
– j0.2
– j0.2
INPUT
+ j0.5
+ j0.5
– j0.5
– j0.5
16
15
21
20
14
19
18
13
Figure 18. MMBR941LT1, T3 Constant Gain and Noise Figure Contours
Figure 17. MMBR941LT1, T3 Constant Gain and Noise Figure Contours
5.0
4.0
– j1
3.0
– j1
+ j1
+ j1
2.0
1.5
5.0
4.0
3.0
2.0
1.0
– j2
– j2
+ j2
+ j2
(f = 0.5 GHz)
(f = 1.0 GHz)
OUTPUT
V CE = 6.0 V
I C = 5.0 mA
V CE = 6.0 V
I C = 5.0 mA
f (GHz)
f (GHz)
0.5
1.0
— AREA OF INSTABILITY
— AREA OF INSTABILITY
NF OPT (dB)
NF OPT (dB)
1.0
1.5
MOTOROLA RF DEVICE DATA
MS NF OPT
MS NF OPT
0.43
0.22
30
64
R N
R N
18
13
0.58
0.93
K
K