Method for measuring passive intermodulation and measuring device

A measuring device for measuring passive intermodulation produced in a measurement segment of a signal transmission path, said measuring device implementing the following steps:

• (a) generating a first HF signal (u1(t)) with a predetermined frequency progression and a second HF signal (u2(t)) with a predetermined frequency progression;
• (b) feeding the first HF signal (u1(t)) and the second HF signal (u2(t)) into the signal transmission path, wherein an intermodulation signal is generated in the signal transmission path from the first HF signal (u1(t)) and the second HF signal (u2(t)) which contains a first intermodulation signal component (urPIM(t)) generated in an input segment of the signal transmission path and a second intermodulation signal component (uPIM(t)) generated in the measurement segment of the signal transmission path;
• (c) generating a compensation signal (uc(t)) depending on the first intermodulation signal component (urPIM(t)) generated in the input segment;
• and
• (d) introducing the compensation signal (uc(t)) into the signal transmission path in order to reduce or cancel out the first intermodulation signal component (urPIM(t)).