#### Physical Derivation of Series Reflection Coefficient

Physically, the*force-wave*reflection coefficient seen at port of a series adaptor is due to an impedance step from , that of the port interface, to a new impedance consisting of the series combination of all

*other*port impedances meeting at the junction. Let

denote this series combination. Then we must have, as in Eq.(F.25),

(F.36) |

Let's check this ``physical'' derivation against the formal definition Eq.(F.31) leading to in Eq.(F.33). Define the total junction impedance as

*all*impedances connected to the junction. Then by Eq.(F.35), for all . From Eq.(F.26), the

*velocity*reflection coefficient is given by

**Next Section:**

Series Reflection Free Port

**Previous Section:**

Reflection Coefficient, Series Case