Attenuators Calculator

Tee Attenuator Calculator

Enter the attenuation in dB and the resistance value Z0 in ohms



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

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

dB = Z0(Ω) =

R1(Ω) = 0      R2(Ω) = 0

Pi Attenuator Calculator

Enter the attenuation in dB and the resistance value Z0 in ohms



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

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

dB = Z0(Ω) =

R1(Ω) = 0      R2(Ω) = 0

Bridged Tee Attenuator Calculator

Enter the attenuation in dB and the resistance value Z0 in ohms



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

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

dB = Z0(Ω) =

R1(Ω) = 0      R2(Ω) = 0

Reflection Attenuator Calculator

Enter the attenuation in dB and the resistance value Z0 in ohms



R1 = Z0 * ((10 ^ (dB / 20) - 1) / (10 ^ (dB / 20) + 1)) for R1 < Zo

R1 = Z0 * ((10 ^ (dB / 20) + 1) / (10 ^ (dB / 20) - 1)) for R1 > Zo

dB = Z0(Ω) =

R1 < Z0(Ω) = 0      R2 > Z0(Ω) = 0

Balanced Attenuator Calculator

Enter the attenuation in dB and the resistance value Z0 in ohms



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

dB = Z0(Ω) =

R1(Ω) = 0
 
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