MRF947 Motorola, MRF947 Datasheet - Page 11

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

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+ j0.2
MOTOROLA RF DEVICE DATA
+ j0.2
– j0.2
– j0.2
+ j0.5
+ j0.5
– j0.5
– j0.5
8.6
Figure 15. MMBR941LT1, T3 Constant Gain and Noise Figure Contours
Figure 16. MMBR941LT1, T3 Constant Gain and Noise Figure Contours
11
8
– j1
– j1
+ j1
+ j1
7
10
6
9
2
8
2.1
2.3
2.5
1.7
1.5
– j2
– j2
+ j2
+ j2
1.9
2.1
(f = 1.0 GHz)
(f = 0.5 GHz)
V CE = 1.0 V
I C = 0.5 mA
V CE = 1.0 V
I C = 0.5 mA
f (GHz)
f (GHz)
0.5
1.0
— AREA OF INSTABILITY
— AREA OF INSTABILITY
NF OPT (dB)
NF OPT (dB)
1.54
1.95
MMBR941 MRF947 MRF9411 SERIES
MS NF OPT
0.71
MS NF OPT
0.55
39
76
R N
R N
38
28
0.28
0.51
2–11
K
K