f = 840 MHz
Zin
Zo = 5 Ω
f = 1000 MHz
f = 1000 MHz
ZOL*
f = 840 MHz
VDD = 26 V, IDQ = 800 mA, Pout = 110 W (CW)
f
Zin
MHz
Ω
ZOL*
Ω
840
2.04 + j0.57
1.62 – j1.65
880
2.20 + j0.16
1.88 – j2.45
920
2.00 – j0.44
1.79 – j2.40
960
2.16 – j0.25
1.47 – j1.82
1000
2.62 – j0.25
1.58 – j1.52
Zin = Complex conjugate of source impedance.
ZOL* = Complex conjugate of the optimum load
impedance at a given output power, voltage,
IMD, bias current and frequency.
Note: ZOL* was chosen based on tradeoffs between gain, output
power, drain efficiency and intermodulation distortion.
Input
Matching
Network
Device
Under Test
Output
Matching
Network
Z in
Z OL*
Figure 11. Series Equivalent Input and Output Impedance
MOTOROLA RF DEVICE DATA
MRF9100 MRF9100R3 MRF9100SR3
9