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MRF1517NT1
7
RF Device Data
Freescale Semiconductor
Figure 19. 440 - 480 MHz Broadband Test Circuit
VDD
+
C6
R3
C7
C5
R2
RF
INPUT
RF
OUTPUT
Z2 Z3
Z5
C1
C3
C13
DUT
Z6
Z8
Z9
Z4
L1
Z7
N2
C17
B2
N1
C12
C4
C11
B1, B2 Short Ferrite Beads, Fair Rite Products
(2743021446)
C1 240 pF, 100 mil Chip Capacitor
C2, C3, C4, C10,
C11, C12 0 to 20 pF, Trimmer Capacitors
C5, C17 130 pF, 100 mil Chip Capacitors
C6, C14 10 mF, 50 V Electrolytic Capacitors
C7, C15 0.1 mF, 100 mil Chip Capacitors
C8, C16 1,000 pF, 100 mil Chip Capacitors
C9 39 pF, 100 mil Chip Capacitor
C13 330 pF, 100 mil Chip Capacitor
L1 55.5 nH, 5 Turn, Coilcraft
N1, N2 Type N Flange Mounts
R1 15 Ω, 0805 Chip Resistor
R2 1.0 kΩ, 1/8 W Resistor
R3 33 kΩ, 1/2 W Resistor
Z1 0.471″
x 0.080
″
Microstrip
Z2 1.082″
x 0.080
″
Microstrip
Z3 0.372″
x 0.080
″
Microstrip
Z4, Z5 0.260″
x 0.223
″
Microstrip
Z6 0.050″
x 0.080
″
Microstrip
Z7 0.551″
x 0.080
″
Microstrip
Z8 0.825″
x 0.080
″
Microstrip
Z9 0.489″
x 0.080
″
Microstrip
Board Glass Teflon?, 31 mils, 2 oz. Copper
Z1
C2
VGG
+
C14
C8
B1
R1
C15
C16
C9
C10
TYPICAL CHARACTERISTICS, 440 - 480 MHz
Pout, OUTPUT POWER (WATTS)
IRL, INPUT RETURN LOSS (dB)
?5
?15
?20
?10
2
1
0
46 95
78 10
Figure 20. Output Power versus Input Power
Pin, INPUT POWER (WATTS)
2
Figure 21. Input Return Loss versus Output Power
0.4
P
out
, OUTPUT POWER (WATTS)
0.0
7
0.6
4
480 MHz
440 MHz
0.8
0.2
0
10
460 MHz
3
?25
9
480 MHz
440 MHz
460 MHz
1
6
3
8
5
VDD
= 7.5 Vdc
VDD
= 7.5 Vdc
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