Patent ID: 11971441
Assignee: QUALCOMM INCORPORATED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for determining a distance to a short in a two-conductor wire, comprising:
injecting an initial tone into a first end of the two-conductor wire, the initial tone having an initial known signal phase;
measuring a signal phase of an initial reflected tone at the first end of the two-conductor wire resulting from injecting the initial tone;
determining an initial phase difference as a phase difference between the initial known signal phase and the measured signal phase of the initial reflected tone; and
determining a distance to the short in the two-conductor wire based at least in part on the determined initial phase difference;
wherein:
the initial known signal phase is an initial known voltage phase; and
the measured signal phase of the initial reflected tone is a measured voltage phase of the initial reflected tone;
the initial tone has an initial frequency, the method further comprising:
injecting a second tone into the first end of the two-conductor wire, the second tone having a second initial voltage phase and a second frequency different from the initial frequency;
measuring a voltage phase of a second reflected tone at the first end of the two-conductor wire resulting from injecting the second tone; and
determining a second phase difference as a phase difference between the second initial voltage phase and the measured voltage phase of the second reflected tone,
wherein determining the distance to the short in the two-conductor wire based at least in part on the determined initial phase difference comprises determining the distance to the short in the two-conductor wire based at least in part on the determined initial phase difference and the determined second phase difference.