Patent ID: 9331726
Filing Date: 2016-05-03
CPC Classification: G01R,H04B,H04L

Claim Text:
1. A method for locating points in a signal transmission path for a high frequency (HF) signal, said points being defective in terms of high frequency transmission characteristics of the signal transmission path, comprising the following steps: (a) generating a first HF signal with a constant predetermined frequency, f (b) generating a second HF signal with a constant predetermined frequency, f (c) generating a predetermined intermodulation product in the form of an intermodulation product signal with a frequency, f (d) introducing the first HF signal and the second HF signal into the signal transmission path at a predetermined introduction point; (e) receiving, at the predetermined introduction point, an intermodulation product signal, which is generated in the signal transmission path from the first HF signal and the second HF signal at a defective point and reflected back to the predetermined introduction point and which corresponds to the intermodulation product generated in step (c), having a frequency, f (f) determining a time lag, t (g) calculating a length, L, between the predetermined introduction point and the point in the signal transmission path from which the signal received in step (e) has been reflected, from the time lag, t