User:GyroMagician/Baluns

Lattice Balun
A lattice balun is a 1:1 balun consisting of a pair of inductors and a pair of capacitors, chosen such that


 * $$L = \frac{Z_c}{\omega}$$

and


 * $$C = \frac{1}{\omega Z_c}$$

where $$\omega$$ is the angular frequency. The characteristic impedance $$Z_c = \sqrt{R_1 R_2}$$, where $$R_1$$ and $$R_2$$ are the input and output impedances.

The operation of the lattice may be understood by starting from the unbalanced The arms of the lattice produce phase shifts of ±90°

Consider a signal entering from the balanced side of the lattice, which may be decomposed into two parts: the differential mode and the common mode.