Patent ID: 6842011
Filing Date: 2005-01-11
Classification: G01R

Abstract:
1. A method for locating an impedance mismatch along a transmission path, the method comprising: providing a forward signal through the transmission path; obtaining, using a feedback loop which includes a feedback selector switch, forward signal samples and reflected signal samples from the forward signal and a reflected signal, respectively, wherein the reflected signal is a reflection of the forward signal from the transmission path; and identifying a time delay from the forward signal samples and the reflected signal samples, wherein the time delay is a time difference between a point along the reflected signal where a significant reflection is present and a corresponding point along the forward signal, wherein the forward signal is an RF pulse, and identifying the time delay comprises: determining a point where a magnitude of the reflected signal samples exceeds a threshold value; and identifying the time delay as a number of samples between the RF pulse and the point where the magnitude of the reflected signal exceeds the threshold value.