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參數(shù)資料
| 型號： | MHW912 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 衰減器 |
| 英文描述： | 12.5 W 884 to 915 MHz RF POWER AMPLIFIER |
| 中文描述： | 884 MHz - 915 MHz RF/MICROWAVE NARROW BAND HIGH POWER AMPLIFIER |
| 文件頁數(shù)： | 2/6頁 |
| 文件大?。?/td> | 128K |
| 代理商： | MHW912 |
MHW912
2
MOTOROLA RF DEVICE DATA
ELECTRICAL CHARACTERISTICS — continued
(Vs2 = Vs3 = 12.5 Vdc; Vs1 = Vb = 8.0 Vdc; TC = +25
°
C, 50 ohm system, unless otherwise noted)
Characteristic
Symbol
Min
Max
Unit
Isolation
(Pin = 1.0 mW; Vcont = 0 Vdc; Vs1 = Vb = 0 to 8.0 V)
3.0 dB Vcont Bandwidth
(Pin = 1.0 mW; Pout = 0.03 to 12.5 W) (1)
Load Mismatch Stress
(Vs = 15.6 Vdc; Pin = 3.0 mW; Pout = 14 W; Load VSWR = 10:1,
All Phase Angles at Frequency of Test) (1)
—
—
– 36
dBm
—
1.0
—
MHz
ψ
No degradation
in output power
before and after test
Stability
(Vs2 = Vs3 = 10.8 to 15.6 Vdc; Pin = 0.5 to 3.0 mW; Pout = 12 mW to 12.5 W;
Load VSWR = 6:1, All Phase Angles; Source VSWR = 3:1, All Phase Angles at
Frequency of Test) (1)
—
All spurious outputs
more than 60 dB
below desired signal
NOTE:
1. Adjust Vcont for specified Pout; Duty Cycle = 12.5%, Period = 4.6 ms.
Figure 1. UHF Power Module Test Circuit Diagram
L1
C1
C2
C4
L2
L3
L4
L5
C3
C5
C6
C7
C8
C9
C10
C11
Z2
1
2
3
4
5
6
CIRCUIT BLOCK DIAGRAM
RF INPUT
Vcont
Vs1
Vs2
Vs3
Vb
RF OUTPUT
Z1
R
PIN DESIGNATIONS:
PIN 1 — RF INPUT POWER @ 0 dBm AND CONTROL VOLTAGE @ 0–3 Vdc
PIN 2 — FIRST & SECOND STAGE COLLECTOR SUPPLY VOLTAGE @ 8 Vdc
PIN 3 — THIRD STAGE COLLECTOR VOLTAGE @ 12.5 Vdc
PIN 4 — TRICKLE BIAS VOLTAGE @ 8 Vdc
PIN 5 — FOURTH & FIFTH STAGE COLLECTOR SUPPLY VOLTAGE @ 12.5 Vdc
PIN 6 — RF OUTPUT POWER @ 12.5 W
C1 = C2= C4 = C6 = C8 = C10 = 0.018
μ
F
C3 = C5 = C7 = C9 = C11 = 1
μ
F
L1–L4 = 0.29
μ
H
L5 = 0.2
μ
H
R = 20 OHMS
Z1, Z2 = 50 OHM MICROSTRIP
ELEMENT VALUES:
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