Zload
f = 880 MHz
f = 1000 MHz
f = 880 MHz
Zo = 10 Ω
Zsource
f = 1000 MHz
VDD = 26 V, IDQ = 600 mA, Pout = 90 W CW
f
MHz
Zsource
Ω
Zload
Ω
880
0.91 − j2.11
1.22 − j0.12
920
0.88 − j2.65
1.00 − j0.16
960
1.6 − j2.61
1.22 − j0.22
1000
2.45 − j3.38
1.14 − j0.41
Zsource = Test circuit impedance as measured from
gate to ground.
Zload = Test circuit impedance as measured
from drain to ground.
Input
Matching
Network
Device
Under Test
Output
Matching
Network
Z source
Z load
Figure 11. Series Equivalent Source and Load Impedance
MRF9080LR3 MRF9080LSR3
5−8
Freescale Semiconductor
Wireless RF Product Device Data