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AR347 1000 WATT 2-50 MHZ AMPLIFIER
This amplifier design covers frequencies from 2 to 50 Mhz with a power output
level of 1000 watts using RF power MOSFETs. The MRF154 used in this design is
considered as a state of the art device. The MRF154 is usable up to 100 Mhz with
a frequency range of 2 to 50 Mhz. Its applications include military
communications, jammers, low channel TV, etc. Although the point of saturation
is well over 1000 watts, the amplifier was tested for linearity at 800 watts.
SPECIFICATIONS:
| Frequency Range |
2 - 50 MHz |
| Power Input |
10 watts (typical) |
| Power Output |
1000 watts (typical) |
| Input Impedance |
50 ohms |
| Output Impedance |
50 ohms |
| Input Voltage |
50 volts DC |
| Input Current |
40 - 50 amps (typical) |
| R1, R2 - 1k Ohm Trimpot |
R10, R11 - 100 Ohm, 1 W |
C6, C12 - 0.1 uF Ceramic Chip |
| R3 - 10k Ohm Trimpot |
R14, R15 - 25 Ohm 150 W
Microwave Power Resistor |
C9 - 820 pF Ceramic Chip |
| R4 - 470 Ohm, 2 W |
D1 - 1N5357A |
C10, C11 - 1000 pF Ceramic Chip |
| R5 - 10 Ohm, 1/2 W |
D2, D3 - 1N4148 |
C13 - 0.47 uF Ceramic Chip |
| R6, R12, R13 - 2k Ohm, 1/2 W |
IC1 - MC1723 Voltage Regulator |
C14 - Unencapsulated Mica, 500 V
Two 1000 pF in series |
| R7 - 10k Ohm, 1/2 W |
C1 - 1000 pF Cermic Disc
|
L1, L2 - 15 uH connecting wires
to R14 and R15 |
| R8 - Depends on R9 (See Text) |
C2, C3, C4 - 0.1 uF Ceramic Disc |
L3 - 10 uH, 10 turns # 12 AWG
enemeled wire on ferrite toroid |
| R9 - Thermistor, Keystone
RL1009-5820-97-D1 |
C5 - 0.01 uF Ceramic Chip |
T1, T2 - 9:1 and 1:9 RF
Transformers |
Printed Circuit
Boards and Components Available
The above is a summary description of
an HF amplifier described in the MOTOROLA Engineering Bulletins and Application
Notes. These Engineering Bulletins and Application Notes may be obtained from
your local MOTOROLA office or can be found in the MOTOROLA RF DEVICE DATA
MANUAL. These amplifiers have been designed and tested by engineers at Motorola.
COMPONENT SETS FOR AR347
| Capacitor Set |
$ 49.25 |
| 1 ea. |
1000pf Cer Disk Cap |
| 3 ea. |
0.1uf Cer Disk Cap |
| 1 ea. |
820pf ATC Cer Chip Cap |
| 2 ea. |
1000pf ATC Cer Chip Cap |
| 4 ea. |
2200pf ATC Cer Chip Cap |
| 1 ea. |
0.01uf ATC Cer Chip Cap |
| 2 ea. |
0.1uf ATC Cer Chip Cap |
| 1 ea. |
0.47uf Cer Chip Cap |
| 2 ea. |
1000pf Metal Clad Mica Cap |
| Resistor Set |
$ 54.70 |
| 1 ea. |
10 ohm 1/2 watt |
| 3 ea. |
2K ohm 1/2 watt |
| 1 ea. |
8.2K ohm 1/2 watt |
| 1 ea. |
10K ohm 1/2 watt |
| 2 ea. |
100 ohm 1 watt |
| 1 ea. |
470 ohm 2 watt |
| 2 ea. |
25 ohm 150 watt Flange Mtg. |
| 2 ea. |
1K ohm Trimpot |
| 1 ea. |
10K ohm Trimpot |
| 1 ea. |
10K(25C)-2.5K(75C) Thermistor |
| Semiconductor Set |
$ 2.75 |
| 1 ea. |
1N5357A Zener Diode |
| 2 ea. |
1N4148 Diode |
| 1 ea. |
MC1723CP Voltage Regulator |
| Ferrite Set |
$ 4.55 |
| 1 ea. |
Toroid |
| 1 ea. |
3" AWG #20 Buss Wire |
| 1 ea. |
12" AWG #12 Enameled Wire |
| Transformer Set |
$ 29.90 |
| 1 ea. |
T1 - 9:1 RF Transformer
(RF800-9) |
| 1 ea. |
T2 - 1:9 RF Transformer (RF2061) |
| Printed Circuit Board Set (2) PC
board size (3 1/2" x 4" and 2 3/4" x 4") |
$ 27.00 |
| MRF154 FET (Pair) |
$
892.00 |
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This Page was last
updated April 25, 2007
