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UМ131-1

UМ131-1

The UM131-1 is 20 Watt SSB amplifier module covering a bandwidth of 1.5-30 MHz. This dual stage amplifier is specifically designed for Land Mobile HF band portable radio applications.

Power RF Amplifier:

  • Power = 20 Watts
  • Bandwidth = 1.5 to 30 MHz
  • Gain = 30dB
  • Vdd = 28 Volts
  • 50 Ohms Input/Output Impedances
  • Copper Flange
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Absolute Maximum Ratings (T=25°C)

ParameterSymbolValueUnit
DC supply Voltage VDD 32.0 V
DC gate Voltage, Power control VGG 5.0 V
Input Power Pin 30 mW
Output Power Pout 25 W
Operating Case Temp. Tc -40 to +85 °C
Storage Temperature Tstg -60 to +100 °C

Electrical Characteristics: (Tc = 25°C, Zs = Zl = 50 Ohms. Vdd = 28 Volts. Vgg = 5 Volts)

ParameterSymbolMinTypicalMaxUnitTest Conditions
Frequency Range BW 1.5   30 MHz 50 Ohm load
Output Power Pout 20     Watts  
Power Gain PG 30 33   dB  
Total Efficiency h 45     % Po=20W, CW
Intermod - 2tone1 IMD3,   -33 -30 dBc  
2nd Harmonic F2     -25 dBc  
3nd Harmonic F3     -10 dBc  
Load Mismatch Ψ No degradation or destroy   Pin=20mW,
Po=20W(PEP), VSWR =20

1Two Tone, Reference Each Tone

Block diagram

  • RF input
  • Gate Voltage (Vgg), Power Control
  • Drain Voltage (Vdd)
  • RF Output (Pout)
  • RF Ground (Case)

Test block diagram

  • С1 - 0.1uF
  • C2 - 100uF