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参数资料
| 型号： | MHW903 |
| 厂商： | MOTOROLA INC |
| 元件分类： | 衰减器 |
| 英文描述： | 3.5 W 890 to 915 MHz RF POWER AMPLIFIERS |
| 中文描述： | 890 MHz - 915 MHz RF/MICROWAVE NARROW BAND HIGH POWER AMPLIFIER |
| 文件页数： | 3/8页 |
| 文件大小： | 154K |
| 代理商： | MHW903 |
3
MHW903 MHW953 MHW954
MOTOROLA RF DEVICE DATA
Figure 2. Test Circuit Diagram — MHW954
PIN DESIGNATIONS:
Pin 1 — RF Input Power @ 20 dBm Max Adjust for
Pin 1 —
Output Power
Pin 2 — First Stage Collector Voltage @ 7.2 Vdc
Pin 3 — Trickle Bias Voltage @ 4.5 Vdc
Pin 4 — Third Stage Collector Supply @ 7.2 Vdc
Pin 5 — RF Output Power @ 3.5 W Nominal
ELEMENT VALUES:
C1=C2=C4=C6= 0.018
μ
F
C3=C5=C7= 2.2
μ
F
L1, L2 = 0.29
μ
H
L3 = 0.2
μ
H
Z1, Z2 = 50 Ohm Microstrip
CIRCUIT BLOCK DIAGRAM
RF INPUT
Vs1
Vs2
RF OUTPUT
Z1
Z2
1
2
3
4
5
C3
C2
C5
C4
C7
C6
Vb
C1
L1
L2
L3
3
2.5
2
1.5
1
0.5
0
890
895
900
905
910
915
55
50
45
1.5:1
1.0:1
Vcont
VSWR
η
Pin = 1 mW
Pout = 3.5 W
Vs1 = Vs2 = Vs3 = 7.2 V
Vb = 5 V
f, FREQUENCY (MHz)
V
I
η
,
5
4
3
2
1
0
0
0.5
1
1.5
2
2.5
3
3.5
4
Vcont, CONTROL VOLTAGE (Vdc)
P
Figure 3. Control Voltage, Efficiency and Input
VSWR versus Frequency
Figure 4. Output Power versus Control Voltage
,
,
Pin = 1 mW
Vs1 = Vs2 = Vs3 = 7.2 V
Vb = 5 V
f = 890 MHz
915 MHz
902 MHz
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