Accession Number : ADD006854

Title :   Method and Apparatus for Locating and Measuring Wave Guide Discontinuities.

Descriptive Note : Patent,


Personal Author(s) : Shoemaker,William B , Jr

Report Date : 14 Aug 1973

Pagination or Media Count : 8

Abstract : An intermittent pulsed carrier signal having a frequency of approximately 10 gigahertz and on for approximately 10 nanoseconds duration is transmitted through a wave guide. Wave guide discontinuities reflect a portion of the incident pulse, and these reflected signals are detected and compared to the incident pulse relative to time and amplitude differences. The discontinuity point in the wave guide is then directly determined using time domain reflectometry, from the time interval for the signal to reach the discontinuity and for the reflected wave to travel back along the wave guide and be detected. As the intensity of the reflected signal is functionally related to the magnitude of the fault, a display of the reflected signal magnitude, compared to the incident signal magnitude, will indicate the magnitude of the wave guide discontinuity. (Author)

Descriptors :   *Patents, *Reflectometers, Waveguides, Discontinuities

Subject Categories : Electrical and Electronic Equipment
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE