1.8--30 MHz BROADBAND REFERENCE CIRCUIT
Z = 50 Ω
o
f = 1.8 MHz
Z
source
f = 1.8 MHz
f = 30 MHz
Z
load
f = 30 MHz
V
= 50 Vdc, I = 25 mA, P = 25 W CW
DQ out
DD
f
Z
Z
load
source
MHz
1.8
5
Ω
Ω
44.4 + j12.8
47.2 + j4.40
46.4 + j1.50
46.0 + j0.70
45.7 - j0.40
45.1 - j1.60
44.6 - j2.90
50.8 - j0.70
50.0 - j0.70
49.7 - j0.90
49.4 - j1.60
48.8 - j2.90
47.9 - j4.30
47.0 - j5.70
10
15
20
25
30
Z
Z
= Test circuit impedance as measured from
gate to ground.
source
= Test circuit impedance as measured from
drain to ground.
load
Output
Matching
Network
Device
Under
Test
Input
Matching
Network
50 Ω
50 Ω
Z
Z
load
source
Figure 20. Broadband Series Equivalent Source and Load Impedance — 1.8--30 MHz
MRFE6VS25NR1
RF Device Data
Freescale Semiconductor, Inc.
14
FREESCALE [ Freescale ]
