2–13

MMBR941 MRF947 MRF9411 SERIES

MOTOROLA RF DEVICE DATA

Figure 19. MRF9411LT1 Constant Gain and Noise Figure Contours

(f = 0.5 GHz)

f (GHz)

NF OPT (dB)

RN

0.5

1.60

40

ΓMS NF OPT

0.70

∠ 35°

+j1

+j2

–j2

–j1

– j0.5

– j0.2

+ j0.2

+ j0.5

11.2

8.6

8

K

0.22

f (GHz)

NF OPT (dB)

RN

1.0

1.95

30

ΓMS NF OPT

0.55

∠ 69°

K

0.39

+j1

+j2

–j2

–j1

– j0.5

– j0.2

+ j0.2

+ j0.5

2

2

1.6

11

10

1.8

7

2.3

2.1

VCE = 1.0 V

IC = 0.5 mA

— AREA OF INSTABILITY

VCE = 1.0 V

IC = 0.5 mA

— AREA OF INSTABILITY

Figure 20. MRF9411LT1 Constant Gain and Noise Figure Contours

(f = 1.0 GHz)