MRF1517NT1
5
RF Device Data
Freescale Semiconductor
Figure 10. 400 - 440 MHz Broadband Test Circuit
VDD
+
C6
R3
C7
C5
R2
RF
INPUT
N2
RF
OUTPUT
Z2 Z3
Z5
C1
C3
C13
DUT
Z6
Z8
Z9
Z4
L1
Z7
C17
B2
N1
C12
C4
C11
B1, B2 Short Ferrite Beads, Fair Rite Products
(2743021446)
C1, C13 300 pF, 100 mil Chip Capacitors
C2, C3, C4, C10,
C11, C12 0 to 20 pF, Trimmer Capacitors
C5, C17 130 pF, 100 mil Chip Capacitors
C6, C14 10 μF, 50 V Electrolytic Capacitors
C7, C15 0.1 μF, 100 mil Chip Capacitors
C8, C16 1,000 pF, 100 mil Chip Capacitors
C9 33 pF, 100 mil Chip Capacitor
L1 55.5 nH, 5 Turn, Coilcraft
N1, N2 Type N Flange Mounts
R1 12 Ω, 0805 Chip Resistor
R2 1.0 kΩ, 1/8 W Resistor
R3 33 kΩ, 1/2 W Resistor
Z1 0.617″
x 0.080
Microstrip
Z2 0.723″
x 0.080
Microstrip
Z3 0.513″
x 0.080
Microstrip
Z4, Z5 0.260″
x 0.223
Microstrip
Z6 0.048″
x 0.080
Microstrip
Z7 0.577″
x 0.080
Microstrip
Z8 1.135″
x 0.080
Microstrip
Z9 0.076″
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, 400 - 440 MHz
Pout, OUTPUT POWER (WATTS)
IRL, INPUT RETURN LOSS (dB)
?5
?15
?25
?10
2
1
0
45689710
Figure 11. Output Power versus Input Power
Pin, INPUT POWER (WATTS)
2
Figure 12. Input Return Loss versus Output Power
P
out
, OUTPUT POWER (WATTS)
0
6
0.3 0.50.4
0.1
4
440 MHz
0.2
0
10
400 MHz
3
9
7
?20
400 MHz
420 MHz
440 MHz
1
3
5
8
420 MHz
VDD
= 7.5 Vdc
VDD
= 7.5 Vdc
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