50 OHM APPLICATION CIRCUIT: 40--800 MHz
V SUPPLY
R1
L1
C3
C4
RF
INPUT
Z1
Z2
DUT
Z3
Z4
Z5
RF
OUTPUT
C1
V CC
C2
Z1, Z5
Z2
Z3
0.347 ? x 0.058 ? Microstrip
0.575 ? x 0.058 ? Microstrip
0.172 ? x 0.058 ? Microstrip
Z4
PCB
0.403 ? x 0.058 ? Microstrip
Getek Grade ML200C, 0.031 ? , ? r = 4.1
Figure 14. 50 Ohm Test Circuit Schematic
30
20
S21
R1
10
0
L1
C4
C3
--10
--20
S22
S11
C1
C2
--30
--40
V CC = 5.2 Vdc
MMG30XX
Rev 2
0
200
400
600
800
f, FREQUENCY (MHz)
Figure 15. S21, S11 and S22 versus Frequency
Figure 16. 50 Ohm Test Circuit Component Layout
Table 8. 50 Ohm Test Circuit Component Designations and Values
C1, C2
C3
C4
L1
R1
Part
Description
0.01 ? F Chip Capacitors
0.1 ? F Chip Capacitor
1 ? F Chip Capacitor
470 nH Chip Inductor
7.5 Ω Chip Resistor
Part Number
C0603C103J5RAC
C0603C104J5RAC
C0603C105J5RAC
BK2125HM471--T
RK73B2ATTE7R5J
Manufacturer
Kemet
Kemet
Kemet
Taiyo Yuden
KOA Speer
Table 9. Supply Voltage versus R1 Values
Supply Voltage
R1 Value
6
7.3
7
16
8
25
9
35
10
44
11
53
12
62
V
?
Note: To provide V CC = 5.2 Vdc and I CC = 110 mA at the device.
MMG3002NT1
6
RF Device Data
Freescale Semiconductor, Inc.
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