## Tee attenuator __Zin__ desired input impedance in Ω<br> __Zout__ desired output impedance<br> __Zin = Zout__<br><br> * __a__ attenuation in dB * __L = 10<sup>a/20</sup>__ (the loss) * ___A = (L + 1)/(L - 1)___<br><br> * ___R2 = 2√(L \* Z<sub>in</sub> \* Z<sub>out</sub> )/(L - 1)___ * ___R1 = Z<sub>in</sub> \* A - R2___ * ___R3 = Z<sub>out</sub> \* A - R2___