MRF658 Datasheet, PDF (4/6 Pages) Motorola, Inc – RF POWER TRANSISTOR NPN SILICON

+j10
+j5
520
460
+j2 f = 400 MHz
ZIN
Zo = 10 Ω
2
5
10
20
0
VCC = 12.5 V Po = 70 W
f
ZIN
ZOL*
MHz
OHMS
OHMS
400 0.62 + j2.8 1.20 + j2.5
440 0.72 + j3.1 1.10 + j2.8
480 0.81 + j3.3 0.94 + j3.1
520 0.90 + j3.6 0.80 + j3.4
+j20
+j30
30 50
+j50
+j100
+j5
520
460
+j2
ZOL*
f = 400 MHz
2
5
0
+j10
Zo = 10 Ω
10
20
+j20
+j30
30 50
+j50
+j100
ZOL* = Conjugate of optimum load impedance into
ZOL* = which the device operates at a given output
ZOL* = power, voltage and frequency.
Figure 5. Series Equivalent Input and Output Impedances
MRF658
4
MOTOROLA RF DEVICE DATA