#### trichop

##### Junior Member level 3

**s11 reflection coefficient**

I got a simple but awkward problem.

Suppose you have a simple circuit, a source with complex impedance connected to a load with also complex impedance.

You want to calculate S11 which in our case equals to reflection coefficient.

Γ = (Zload -Zo)/(Zload + Zo)

However, in this way I get an S11 magnitude bigger than one. (at conjugate matching, for example Zload = 20 + 40j, Zo = 20 - 40j)

Could this be reasonable?

I simulated the same network on ADS and for conjugate matching it gives me

mag(S11) of almost zero.

Any idea?