Zo = 5 Ω
2.0 GHz
Zin
f = 1.8 GHz
2.0 GHz ZOL*
f = 1.8 GHz
VDD = 26 V, IDQ = 75 mA, Pout = 10 W (PEP)
f
Zin
MHz
Ω
ZOL*
Ω
1800
1860
1900
1960
2000
2.1 + j1.0
2.05 + j1.15
2.0 + j1.2
1.9 + j1.4
1.85 + j1.6
3.8 – j0.15
3.77 – j0.13
3.75 – j0.1
3.65 + j0.1
3.55 + j0.2
Zin = Complex conjugate of source impedance.
ZOL* = Complex conjugate of the optimum load
impedance at given output power, voltage, IMD,
bias current and frequency.
Input
Matching
Network
Device
Under Test
Output
Matching
Network
Z in
Z OL*
Figure 6. Series Equivalent Input and Output Impedence
MOTOROLA RF DEVICE DATA
MRF282SR1 MRF282ZR1
7