# skrf.network.chopinhalf¶

skrf.network.chopinhalf(ntwk, *args, **kwargs)[source]

Chops a sandwich of identical, reciprocal 2-ports in half.

Given two identical, reciprocal 2-ports measured in series, this returns one.

In other words, given

$B = A\cdot\cdotA$

Return A, where A port2 is connected to A port1. The result may be found through signal flow graph analysis and is,

$a_{11} =$

rac{b_{11}}{1+b_{12}}

a_{22} =

rac{b_{22}}{1+b_{12}}

a_{12}^2 = b_{21}(1-

rac{b_{11}b_{22}}{(1+b_{12})^2}

ntwk : Network
a 2-port that is equal to two identical two-ports in cascade