參數(shù)資料
型號: MRF137
廠商: MOTOROLA INC
元件分類: 功率晶體管
英文描述: N-CHANNEL MOS BROADBAND RF POWER FET
中文描述: UHF BAND, Si, N-CHANNEL, RF POWER, MOSFET
文件頁數(shù): 5/10頁
文件大?。?/td> 196K
代理商: MRF137
5
MRF137
MOTOROLA RF DEVICE DATA
Figure 14. 400 MHz Test Circuit
C1, C2, C3, C4 — 0–20 pF Johanson, or equivalent
C5, C8 — 270 pF, 100 Mil Chip
C6, C7 — 24 pF Mini–Unelco, or equivalent
C9 — 0.01
μ
F, 100 V, Disc Ceramic
C10 — 100
μ
F, 40 V
C11 — 0.1
μ
F, 50 V, Disc Ceramic
C12, C13 — 680 pF Feedthru
D1 — 1N5925A Motorola Zener
R1, R2 — 10 k
, 1/4 W
R3 — 10 Turns, 10 k
Figure 15. Large–Signal Series Equivalent Input and Output Impedance, Zin, ZOL*
R4 — 1.8 k
, 1/2 W
Z1 — 2.9
x 0.166
Microstrip
Z2, Z4 — 0.35
x 0.166
Microstrip
Z3 — 0.40
x 0.166
Microstrip
Z5 — 1.05
x 0.166
Microstrip
Z6 — 1.9
x 0.166
Microstrip
RFC1 — 6 Turns, 0.300
ID, #20 AWG Enamel, Closewound
RFC2 — Ferroxcube VK–200 — 19/4B
Board — Glass Teflon, 62 Mils
BIAS
ADJUST
RF
INPUT
RF
OUTPUT
VDD = 28 V
R4
R2
D1
C9
R1
C5
C1
C6
C2
Z1
Z2
Z3
Z4
Z5
Z6
C8
C4
C3
C7
DUT
RFC1
RFC2
C10
C11
C12
C13
+
R3
400
200
150
f = 100 MHz
ZOL*
Zin
150
200
400
f = 100 MHz
VDD = 28 V, IDQ = 25 mA,
Pout = 30 W
ZOL* = Conjugate of the optimum load impedance
into which the device output operates at a given out-
put power, voltage and frequency.
f
MHz
Zin
Ohms
ZOL*
Ohms
100
150
200
400
2.11 – j11.07
1.77 – j7.64
1.85 – j3.75
1.74 + j3.62
8.02 – j2.89
5.75 – j3.02
3.52 – j2.67
2.88 – j1.52
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