Difference between revisions of "RF-Amp"

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[[file:RF-Amp-tracks.PNG]]
 
[[file:RF-Amp-tracks.PNG]]
  
[[file:RF-Amp-T1.PNG]]
+
===== Input Transformer =====
  
 
[[file:RF-Amp-T2.PNG]]
 
[[file:RF-Amp-T2.PNG]]
 +
 +
===== Output Transformer =====
 +
 +
[[file:RF-Amp-T1.PNG]]
  
 
== LT Spice Simulation ==
 
== LT Spice Simulation ==

Revision as of 10:20, 4 November 2021

RF-Amp Front.png

RF Amplifier Features

RF Amplifier Design

Schematic

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 = 35uH

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)

Tracks

RF-Amp-tracks.PNG

Input Transformer

RF-Amp-T2.PNG

Output Transformer

RF-Amp-T1.PNG

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