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Fixed Pi and T Attenuator Calculator

Enter values for Rin, Rout, and Attenuation, then click Calculate. If unequal termination resistances are used and an attenuation value is selected that is lower than what is physically possible (a negative resistor value is displayed), then a message will appear in the box over the schematics. "k" is the linear ratio equivalent to the decibel value of the attenuator.

Equations used in this calculator can be found on the Pi and Tee Attenuators Equations page.

 

Calculated values do not change until the "Calculate" button is clicked.

 

 

 

Input Resistance: Output Resistance:

Attenuation: dB


k = (Pin/Pout)
 
  Tee Attenuator        Pi Attenuator
   Ω    

Rin        

   Rout

Rin        

 Rout
  Ω    
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RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
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