Stub (electronics)

A stub for impedance matching an electrical line, so in order to improve the insertion loss or reduction of the reflected wave is referred to in high-frequency systems.

The stub can end open ( open circuit ) or shorted ( short circuit ) be.

It causes the Smith chart rotation of the impedance or admittance: open cable end to the right, shorted to the left.

The length of the stub in relation to the specific wavelength in the medium determines "how far" this rotation takes place.

The English word " stub " has now entered the German language as a " stub ".