Zo = 5 Ω
2170 MHz
Zin
2170 MHz
ZOL*
f = 2110 MHz
f = 2110 MHz
VDD = 28 V, IDQ = 500 mA, Pout = 60 W PEP
f
Zin
MHz
Ω
ZOL*
Ω
2110
2140
2.40 + j0.55
2.26 + j0.87
3.07 + j2.05
2.89 + j2.38
2170
2.08 + j1.23
2.66 + j2.71
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 9. Series Equivalent Input and Output Impedance
MRF21060 MRF21060R3 MRF21060SR3
6
MOTOROLA RF DEVICE DATA