mrf5s4140h Freescale Semiconductor, Inc, mrf5s4140h Datasheet - Page 8

• Manufacturer Part Number: mrf5s4140h
• Description: Rf Power Field Effect Transistors
• Manufacturer: Freescale Semiconductor, Inc

8
MRF5S4140HR3 MRF5S4140HSR3
Figure 13. Series Equivalent Source and Load Impedance — 460 - 470 MHz
Z
Input
Matching
Network
o
Z
Z
= 2 Ω
source
load
MHz
440
445
450
455
460
465
470
475
480
485
490
f
f = 490 MHz
V
Z
source
DD
= Test circuit impedance as measured from
= Test circuit impedance as measured
= 28 Vdc, I
Z
gate to ground.
from drain to ground.
source
0.360 - j0.959
0.355 - j0.873
0.352 - j0.773
0.350 - j0.710
0.350 - j0.628
0.356 - j0.540
0.355 - j0.473
0.345 - j0.388
0.359 - j1.19
0.389 - j1.11
0.379 - j1.03
Z
DQ
Device
Under
Test
source
W
= 1250 mA, P
f = 440 MHz
Z
out
load
1.35 - j0.870
1.31 - j0.743
1.34 - j0.641
1.32 - j0.539
1.31 - j0.420
1.30 - j0.274
1.29 - j0.173
1.28 - j0.044
1.29 + j0.090
1.29 + j0.195
1.28 + j0.313
= 28 W Avg.
f = 490 MHz
Z
load
W
f = 440 MHz
Output
Matching
Network
Z
load
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