Difference between revisions of "RF-Amp"

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** Wideband Transformers 5 - 400 MHz
 
** Wideband Transformers 5 - 400 MHz
 
** Power Transformers 0.5 - 30 MHz
 
** Power Transformers 0.5 - 30 MHz
 +
 +
[[file:FT37-43_10_Turns.PNG]]
  
 
==== Input Transformer ====
 
==== Input Transformer ====
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*** 200:50 Ohms = 2:1 turns ratio
 
*** 200:50 Ohms = 2:1 turns ratio
 
*** 10 turns primary (on transistor collector), 5 turns secondary (towards output)
 
*** 10 turns primary (on transistor collector), 5 turns secondary (towards output)
 
=== Inductor Values ===
 
 
* Value: FT37-43 10 Turns
 
 
[[file:FT37-43_10_Turns.PNG]]
 
  
 
=== Schematics ===
 
=== Schematics ===

Revision as of 09:17, 4 November 2021

RF-Amp Front.png

RF Amplifier Features

RF Amplifier Design

DC operating point

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

Input/Output Transformer

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

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)

Schematics

RF Amp Schematic-4.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