f = 545 MHz
Z
load
f = 545 MHz
Z
source
f = 385 MHz
Z
o
= 25
Ω
f = 385 MHz
V
DD
= 28 Vdc, I
DQ
= 1100 mA, P
out
= 25 W Avg.
f
MHz
385
405
425
445
465
485
505
525
545
Z
source
W
4.735 + j2.917
4.073 + j4.202
3.987 + j5.466
3.909 + j6.743
4.094 + j7.661
4.128 + j9.483
4.446 + j11.620
4.921 + j13.710
5.437 + j15.838
Z
load
W
2.229 + j5.627
1.809 + j6.123
1.842 + j6.684
1.767 + j7.187
1.822 + j7.338
1.566 + j8.397
1.525 + j9.787
1.769 + j11.120
2.023 + j12.467
Z
source
= Test circuit impedance as measured from
gate to ground.
Z
load
= Test circuit impedance as measured
from drain to ground.
Input
Matching
Network
Device
Under
Test
Output
Matching
Network
Z
source
Z
load
Figure 16. Series Equivalent Source and Load Impedance
MRF5S4125NR1 MRF5S4125NBR1
RF Device Data
Freescale Semiconductor
9
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
