Frequency domain reflectometer and method of suppressing harmoni

Details Frequency domain reflectometer and method of suppressing harmoni Frequency domain reflectometer and method of suppressing harmoni

1997-12-02

1999-11-30

Do, Diep N.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

324527, 324642, 324534, G01R 3111

Patent

active

059949058

ABSTRACT:
Frequency domain reflectometer and method of locating faults in a transmission line utilized by the reflectometer are disclosed. The reflectometer suppresses harmonics that may be interpreted as faults that in actuality do not exist. In general, the reflectometer applies a sweep signal to the transmission line in order to obtain a reflected sweep response signal. Then, the reflectometer obtains a sweep response spectrum from the reflected sweep response signal. The reflected sweep response signal includes a plurality of spectral peaks which represent the frequency components of the reflected sweep response signal. Then, the reflectometer mathematically determines which spectral peaks of the reflected sweep response spectrum were generated due to harmonics in the reflected sweep response signal. After determining that a spectral peak is a harmonic of a fundamental spectral peak, the reflectometer subtracts a percentage of the fundamental spectral peak from the harmonic spectral peak, thereby suppressing a harmonic of the reflected sweep response signal. The reflectometer then obtains from the adjusted sweep response spectrum a location of an impedance mismatch in the transmission line.

REFERENCES:
patent: Re35561 (1997-07-01), Mashikian et al.
patent: 4496900 (1985-01-01), Di Stefano et al.
patent: 4630228 (1986-12-01), Tarczy-Hornoch et al.
patent: 4739276 (1988-04-01), Graube
patent: 4766386 (1988-08-01), Oliver et al.
patent: 5068614 (1991-11-01), Fields et al.
patent: 5128619 (1992-07-01), Bjork et al.
patent: 5498965 (1996-03-01), Mellitz

Affiliated with

Also associated with

Rating

Frequency domain reflectometer and method of suppressing harmoni does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Frequency domain reflectometer and method of suppressing harmoni, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency domain reflectometer and method of suppressing harmoni will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1677369