8
RF Device Data
Freescale Semiconductor
MRF1535NT1 MRF1535FNT1
Note: ZOL* was chosen based on tradeoffs between gain, drain efficiency, and device stability.
Figure 20. Series Equivalent Input and Output Impedance
Zo
= 10
Ω
Zin
= Complex conjugate of source
impedance.
ZOL* = Complex conjugate of the load
impedance at given output power,
voltage, frequency, and ηD
> 50 %.
f
MHz
Zin
Ω
ZOL*
Ω
135 5.0 + j0.9 1.7 + j0.2
Zin
= Complex conjugate of source
impedance.
ZOL* = Complex conjugate of the load
impedance at given output power,
voltage, frequency, and ηD
> 50 %.
VDD
= 12.5 V, I
DQ
= 250 mA, P
out
= 35 W
155 5.0 + j0.9 1.7 + j0.2
175 3.0 + j1.0 1.3 + j0.1
f
MHz
Zin
Ω
ZOL*
Ω
450 0.8 - j1.4 1.0 - j0.8
VDD
= 12.5 V, I
DQ
= 500 mA, P
out
= 35 W
470 0.9 - j1.4 1.1 - j0.6
500 1.0 - j1.4 1.1 - j0.6
ZOL*
Zin
f = 175 MHz
f = 135 MHz
Zin
ZOL*
Zin
ZOL*
Input
Matching
Network
Device
Under Test
Output
Matching
Network
520 0.9 - j1.4 1.1 - j0.5
f = 450 MHz
f = 520 MHz
f = 175 MHz
f = 135 MHz
f = 450 MHz
f = 520 MHz
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