
3
MRF21090 MRF21090S
MOTOROLA RF DEVICE DATA
Figure 1. MRF21090 Test Circuit Schematic
B1
C1, C13
C2, C10
Ferrite Bead, Fair Rite, 2743019447
470
μ
F, 50 V Electrolytic Capacitor
22
μ
F, 35 V Tantalum Surface Mount Chip
Capacitor, Kemet
20 nF, RF Chip Capacitor, 100B203MCA500X, ATC
5.1 pF, RF Chip Capacitor, 100B5R1CCA500X, ATC
0.4 – 2.5 pF, Variable Capacitor, Johanson Gigatrim
10 pF, RF Chip Capacitor, 100B100JCA500X, ATC
1 F, 35 V Tantalum Surface Mount Chip Capacitor,
Kemet
1 nF, RF Chip Capacitor, 100B102JCA500X, ATC
8.2 pF, RF Chip Capacitor, 100B8R2CCA500X, ATC
13
, 1/4 W Chip Resistor, RM73B2B130JT,
Garret Instrument
12
, 1/4 W Chip Resistor, RM73B2B120JT,
Garret Instrument
30.7 x 2.09 mm Microstrip Line
5.99 x 2.09 mm Microstrip Line
7.55 x 9.89 mm Microstrip Line
3.77 x 15.71 mm Microstrip Line
6.89 x 26.17 mm Microstrip Line
14.93 x 32.05 mm Microstrip Line
C3, C9
C4, C8
C5, C12
C6
C7
C11
C14
R1
R2
T1
T2
T3
T4
T5
T6
V
V
RF INPUT
RF OUTPUT
R1
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
C7
C8
C9
C10
C11
C12
C14
C13
C6
R2
B1
DUT
C5
C1
C2
C3
C4
GG
DD
T7
T8
T9
T10
T11
WS1, WS2
10.23 x 2.09 mm Microstrip Line
6.03 x 2.09 mm Microstrip Line
23.98 x 2.09 mm Microstrip Line
29.82 x 1.15 mm Microstrip
Line
17.08 x 1.15 mm Microstrip Line
Beryllium Copper Wear Blocks 5 mils Thick
Brass Banana Jack and Nut
Red Banana Jack and Nut
Green Banana Jack and Nut
Type N Jack Connectors, 3052–1648–10,
Omni Specra
4–40 Head Screws 0.125
″
Long
4–40 Head Screws 0.188
″
Long
4–40 Head Screws 0.312
″
Long
4–40 Head Screws 0.438
″
Long
Endplates for Copper Bedstead
Copper Bedstead/Heatsink
Copper Bedstead Insert
0.030
″
Glass Teflon
, 2 oz Copper Clad
3
″
x 5
″
Arion
3
″
x 5
″
Copper Clad PCB Teflon
,
MRF21090, CMR
Endplates Brass
Bedstead
Insert
Raw PCB
RF Circuit
+
+
+
+
+
Figure 2. Component Parts Layout
C
U
T
O
U
T
Drain
Bias
Feed
C1
C2
C3C4
C6
C5
C7C8
C9
C10
C11
C12
C14
B1
R2
R1
C13
T1
T2
T3
T4
T5
T6
T7
T8
T10
T11
T9
Gate
Bias
Feed
MRF21090