450--520 MHz UHF WIDEBAND REFERENCE CIRCUIT
f = 520 MHz
Z = 5 Ω
o
f = 450 MHz
Z
source
f = 520 MHz
f = 450 MHz
Z
load
V
= 13.6 Vdc, I = 100 mA, P = 31 W Avg.
DQ out
DD
f
Z
Z
load
source
MHz
450
460
470
480
490
500
510
520
Ω
Ω
1.37 + j1.64
1.43 + j1.72
1.47 + j1.79
1.49 + j1.83
1.47 + j1.86
1.41 + j1.89
1.32 + j1.93
1.20 + j1.99
2.57 -- j1.01
2.49 -- j1.03
2.38 -- j1.03
2.26 -- j1.01
2.11 -- j0.95
1.97 -- j0.87
1.82 -- j0.76
1.68 -- j0.62
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 23. UHF Wideband Series Equivalent Source and Load Impedance — 450--520 MHz
AFT05MS031NR1 AFT05MS031GNR1
RF Device Data
Freescale Semiconductor, Inc.
19
FREESCALE [ Freescale ]
