MRF137 Datasheet, PDF (7/10 Pages) Motorola, Inc – N-CHANNEL MOS BROADBAND RF POWER FET

+ j50
+ j25
+ j100
+ j10
800
400
0
10
25
50
150
f = 50 MHz
– j10
S11
+ j150
100 150 250 500
+ j250
+ j500
– j500
– j250
– j150
– j25
– j100
– j50
Figure 16. S11, Input Reflection Coefficient
versus Frequency
VDS = 28 V ID = 0.75 A
+120°
+ 90°
+ 60°
f = 50 MHz
+150°
150
400
180° _{10 8 6 4 2}
800
+ 30°
0°
S21
–150°
– 30°
–120°
– 60°
– 90°
Figure 18. S21, Forward Transmission Coefficient
versus Frequency
VDS = 28 V ID = 0.75 A
+ 90°
+120°
+150°
180°_{0.1 .08 .06 .04 .02}
+ 60°
800
+ 30°
600
400
f = 50 MHz
0°
S12
–150°
– 30°
–120°
– 60°
– 90°
Figure 17. S12, Reverse Transmission Coefficient
versus Frequency
VDS = 28 V ID = 0.75 A
+ j50
+ j25
+ j100
+ j10
800
0
25
50
400 ¹⁵⁰
f = 50 MHz
– j10
S22
+ j150
100 150 250 500
+ j250
+ j500
– j500
– j250
– j150
– j25
– j100
– j50
Figure 19. S22, Output Reflection Coefficient
versus Frequency
VDS = 28 V ID = 0.75 A
MOTOROLA RF DEVICE DATA
MRF137
7