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参数资料
| 型号： | MRF897R |
| 厂商： | MOTOROLA INC |
| 元件分类： | 功率晶体管 |
| 英文描述： | RF POWER TRANSISTOR NPN SILICON |
| 中文描述： | 2 CHANNEL, UHF BAND, Si, NPN, RF POWER TRANSISTOR |
| 封装： | CASE 395E-01, 5 PIN |
| 文件页数： | 2/6页 |
| 文件大小： | 172K |
| 代理商： | MRF897R |
MRF897R
2
MOTOROLA RF DEVICE DATA
ELECTRICAL CHARACTERISTICS — continued
(TC = 25
°
C unless otherwise noted)
Characteristic
Symbol
Min
Typ
Max
Unit
FUNCTIONAL CHARACTERISTICS
Common–Emitter Amplifier Power Gain
(VCC = 24 Vdc, Pout = 30 Watts (PEP), Icq = 125 mA, f1 = 900 MHz,
f2 = 900.1 MHz)
Collector Efficiency
(VCC = 24 Vdc, Pout = 30 Watts (PEP), Icq = 125 mA, f1 = 900 MHz,
f2 = 900.1 MHz)
Intermodulation Distortion
(VCC = 24 Vdc, Pout = 30 Watts (PEP), Icq = 125 mA, f1 = 900 MHz,
f2 = 900.1 MHz)
Output Mismatch Stress
(VCC = 26 Vdc, Pout = 30 Watts (PEP), Icq = 125 mA, f1 = 900 MHz,
f2 = 900.1 MHz, Load VSWR = 5:1 (all phase angles))
Gpe
10.5
12.0
—
dB
η
30
38
—
%
IMD
—
–37
–30
dBc
ψ
No Degradation in Output Power
Figure 1. 840–900 MHz Test Circuit Schematic
B1, B2, B3, B4 — Short Ferrite Bead, Fair Rite #2743019447
C1 — 0.8–8.0 pF Var Capacitor, Johansen Gigatrim
C2, C3, C23, C24 — 43 pF, 100 mil, ATC Chip Capacitor
C4, C5, C21, C22 — 1000 pF, 100 mil, ATC Chip Capacitor
C6, C7, C11, C12 — 10
μ
F, Electrolytic Capacitor, Panasonic
C8, C9, C16, C17 — 100 pF, 100 mil, ATC Chip Capacitor
C10 — 9.1 pF, 50 mil, ATC Chip Capacitor
C13 — 250
μ
F Electrolytic Capacitor, Mallory
C14, C18, C19, C25 — 0.1
μ
F, Chip Capacitor, Kemet
C15 — 1.1 pF, 50 mil, ATC Chip Capacitor
C20 — 6.8 pF, 100 mil, ATC Chip Capacitor
L1, L2, L3, L4, L5, L6, L7, L8 — 5 Turns 20 AWG,
IDIA 0.126
″
Choke, Taylor Spring 46 nH
N1, N2 — Type N Flange Mount, Omni Spectra 3052–1648–10
Q1 — Bias Transistor BD136 PNP
R1, R12 — 27 Ohm, 2.0 W
R3, R4, R5, R6 — 4.0 x 39 Ohm, 1/8 W, Chips Resistors in
R3, R4, R5, R6 —
Parallel,
Rohm 390–J
SB1 — 0.15
″
x 0.3
″
x 0.03
″
Cu
TL1–TL11 — Microstrip Line, See Photomaster
Balun1, Balun2, Coax 1, Coax 2 — 2.20
″
50 Ohm, 0.086
″
o.d.
Balun1, Balun2, Coax 1, Coax 2 —
semi–rigid coax, Micro Coax
Balun1, Balun2, Coax 1, Coax 2 —
UT–85–M17
Circuit Board — 1/32
″
Glass Teflon, Arlon GX–0300–55–22,
Circuit Board —
ε
r = 2.55
COAX 1
BALUN 1
INPUT
TL2
TL1
C1
C2
C3
TL4
TL3
TL5
TL6
C10
DUT
R3
B1
TL7
TL8
C15
C20
C23
C24
C4
C25
L3
C6
+
VB
R1
VBB
Q1
C8
TL11
OUTPUT
COAX 2
BALUN 2
TL9
TL10
B3
C16
L7
C21
C18
VCC
R5
L5
C11
+
C13
+
C9
L1
L2
B2
L4
R4
C5
C26
C7
+
VB
R2
VBB
L8
C17
B4
C22
C19
L6
R6
C12
+
C14
+
VCC
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