Is there more than one type of controlled impedance?

FAQ about printed circuit boardsTERMINOLOGY

Yes, there is and these are explained below:

Differential impedance – Impedance of a pair of conductors with equal and opposite polarity signals – same amplitude in anti-phase with each other.

Odd mode impedance – Impedance of one side of a pair of conductors which both have equal and opposite polarity signals – same amplitude and anti-phase.

Even mode impedance – Impedance of one side of a pair of conductors which have equal signals – same amplitude and same polarity.

Common mode impedance – Impedance of a pair of conductors which have equal signs – same amplitude and same polarity.