A Pi attenuator uses two shunt resistors and one series resistor to reduce RF signal level while maintaining the desired system impedance.
Enter the attenuation in dB and the system impedance. For most RF systems, impedance is commonly 50 Ω.
Input Example
Attenuation: 10 dB Impedance: 50 Ω
How to Use
Enter the required attenuation and impedance, then click calculate to get R1 and R2 resistor values.
Pi Attenuator Calculator is a free online calculator tool. Use it to get instant, accurate results for your electronics calculations.