MRF1518T1 Motorola, MRF1518T1 Datasheet - Page 9

• Manufacturer Part Number: MRF1518T1
• Description: The RF MOSFET Line RF POWER FIELD EFFECT TRANSISTOR
• Manufacturer: Motorola

Z in
Z OL * = Complex conjugate of the load
MOTOROLA RF DEVICE DATA
V DD = 12.5 V, I DQ = 150 mA, P out = 8 W
MHz
450
470
500
520
= Complex conjugate of source
f
impedance with parallel 15
resistor and 82 pF capacitor in
series with gate. (See Figure 1).
impedance at given output power,
voltage, frequency, and D > 50 %.
f = 450 MHz
4.85 +j3.71
4.63 +j3.84
3.52 +j3.92
520
4.9 +j2.85
520
Z in
Z o = 10
Z in
Note: Z OL * was chosen based on tradeoffs between gain, drain efficiency, and device stability.
f = 450 MHz
Z OL *
6.42 +j3.23
4.59 +j3.61
4.72 +j3.12
3.81 +j3.27
Z OL *
Figure 28. Series Equivalent Input and Output Impedance
Input
Matching
Network
Z in
Z OL * = Complex conjugate of the load
V DD = 12.5 V, I DQ = 150 mA, P out = 8 W
MHz
400
440
470
= Complex conjugate of source
400
f
Z OL *
impedance with parallel 15
resistor and 47 pF capacitor in
series with gate. (See Figure 10).
impedance at given output power,
voltage, frequency, and D > 50 %.
f = 470 MHz
Z
in
400
4.28 +j2.36
6.45 +j5.13
5.91 +j3.34
Device
Under Test
Z in
f = 175 MHz
f = 470 MHz
135
Z in
Z
4.41 +j0.67
4.14 +j2.53
3.92 +j4.02
Z OL *
OL
Z OL *
*
f = 135 MHz
Output
Matching
Network
Z in
175
Z in
Z OL * = Complex conjugate of the load
V DD = 12.5 V, I DQ = 150 mA, P out = 8 W
MHz
135
155
175
= Complex conjugate of source
Z o = 10
f
impedance with parallel 15
resistor and 43 pF capacitor in
series with gate. (See Figure 19).
impedance at given output power,
voltage, frequency, and D > 50 %.
18.31 –j0.76
17.72 +j1.85
18.06 +j5.23
Z in
8.97 +j2.62
9.69 +j2.81
7.94 +j1.14
MRF1518T1
Z OL *
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