Attenuator Calculator

Tee Attenuator Calculator

Enter Attenuation and Zo to solve for R1 and R2

R1 = Z0 * ((10 ^ (dB / 20) - 1) / (10 ^ (dB / 20) + 1))
R2 = 2 * Z0 * (10 ^ (dB / 20) / (10 ^ (dB / 10) - 1))

Pi Attenuator Calculator

Enter Attenuation and Zo to solve for R1 and R2

R1 = Z0 * ((10 ^ (dB / 20) + 1) / (10 ^ (dB / 20) - 1))
R2 = (Z0/2) * (10 ^ (dB / 10) - 1) / (10 ^ (dB / 20))

Bridged Tee Attenuator Calculator

Enter Attenuation and Zo to solve for R1 and R2

R1 = Z0 * (10 ^ (dB / 20) - 1)
R2 = Z0 / (10 ^ (dB / 20) - 1)

Reflection Attenuator Calculator

Enter Attenuation and Zo to solve for R1 and R2

R1 = Zo * ((10 ^ (dB / 20) - 1) / (10 ^ (dB / 20) + 1)) for R1 < Zo
R1 = Zo * ((10 ^ (dB / 20) + 1) / (10 ^ (dB / 20) - 1)) for R1 > Zo

Balanced Attenuator Calculator

Enter Attenuation and Zo to solve for R1

R1 = Zo * (1 / (10 ^ (dB / 20) - 1) )