Tee Attenuator Calculator

Enter values and select a unit and result will be displayed.

Attenuation (A):
dB
Input Impedance (Zi):
Output Impedance (Zo):
Ra::
Rb::
Rc::

A Tee Attenuator Calculator is a tool used to design a Tee Attenuator — a resistive network that reduces the power of a signal while maintaining proper impedance matching. It's called a "Tee" attenuator because the resistor configuration looks like the letter "T."

A Tee Attenuator typically consists of three resistors:

R1: Two resistors in series with the signal path (on input and output sides)
R2: One resistor shunted to ground between the series resistors
Here's a simple diagram:

yaml

Input ——Ω——+——Ω—— Output  
        R1     |  
               Ω  
              R2  
               |  
              GND

The Tee Attenuator Calculator helps determine the values of these resistors based on:

Desired attenuation (in decibels, dB) — how much the signal should be reduced
Input and output impedance — often 50Ω or 75Ω in RF circuits, for consistent signal matching
The calculator uses specific formulas to compute R1 and R2, ensuring that the attenuator reduces the signal strength evenly without distorting the waveform or causing impedance mismatch.