This tool calculates the **Capacitor** and **Inductor** values for a Bias T design.

Enter the following:

- Impedance
- Impedance ratio
- Frequency of operation

## Formula

The minimum value of Capacitance is

**C = 1/(2*π*f*X _{c})**

The Inductance value is

**L = X _{L}/(2*π*f)**

where

- f = Frequency of operation
- X
_{c}= R/n - X
_{L}= R*n - R = Impedance
- n = Impedance Ratio

## Background

This calculator helps determine the Inductor and Capacitor values for a Bias Tee (also known as Bias T). Note that these are minimum values associated with the circuit.

Bias Tees are used in Software-defined radios and receivers.