- Published in issue 7/1999 on page 17
Impedance matching network
When r.f. signals are transferred directly from a cable or other output terminal with an impedance Z1 to a signal input terminal or cable with an impedance Z2, reflections ensue that cause standing waves. Reflected signals then collide with incoming signals. The consequent superimposition of the two signals causes the resulting signal to be weak at certain points in the cable or network and very strong at others.