2–11

MMBR941 MRF947 MRF9411 SERIES

MOTOROLA RF DEVICE DATA

Figure 15. MMBR941LT1, T3 Constant Gain and Noise Figure Contours

(f = 1.0 GHz)

f (GHz)

NF OPT (dB)

RN

0.5

1.54

38

ΓMS NF OPT

0.71

∠ 39°

+j1

+j2

–j2

–j1

– j0.5

– j0.2

+ j0.2

+ j0.5

8

9

10

11

8

K

0.28

f (GHz)

NF OPT (dB)

RN

1.0

1.95

28

ΓMS NF OPT

0.55

∠ 76°

K

0.51

+j1

+j2

–j2

–j1

– j0.5

– j0.2

+ j0.2

+ j0.5

8.6

1.7

1.9

2.1

7

6

2

2.1

2.3

2.5

VCE = 1.0 V

IC = 0.5 mA

— AREA OF INSTABILITY

VCE = 1.0 V

IC = 0.5 mA

— AREA OF INSTABILITY

Figure 16. MMBR941LT1, T3 Constant Gain and Noise Figure Contours

(f = 0.5 GHz)

1.5