RF-Amp

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RF-Amp Front.png

RF Amplifier Features

RF Amplifier Design

Schematics

RF Amp Schematic-4.PNG

DC operating point

  • Ice = 10 mA
  • Ve = 0.1 * Vcc = 1.2V

Input/Output Transformer

FT37-43 Toroid

  • FT37-43
  • Wideband Transformers 5 - 400 MHz
  • Power Transformers 0.5 - 30 MHz
  • 10 turns

FT37-43 10 Turns.PNG

Input Transformer

    • Input Transformer (T1 on Charlie's - T2 on this board)
      • 50:75.8 Ohms = 1 : 1.23 turns ratio
        • 9 turns primary, 11 turns on secondary

Output Transformer

    • Output transformer (T2 on Charlie's - T1 on this board)
      • 200:50 Ohms = 2:1 turns ratio
      • 10 turns primary (on transistor collector), 5 turns secondary (towards output)

LT Spice Simulation

Transformer 1.5 uH

RF-AMP-LTSPICE.PNG

Transformer 35 uH

RF-AMP-LTSPICE 35uH.PNG

Charlie Morris Schematics

IF AMP

IF Amp 0046A.jpg

IF Amp 0046B.jpg

IF Amp 0046C.jpg

IF Amp 0047A.jpg

IF Amp 0047B.jpg

IF Amp 0047C.jpg

Video

Assembly Sheet