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Title: Ultra-wideband directional sampler

The Ultra-Wideband (UWB) Directional Sampler is a four port device that combines the function of a directional coupler with a high speed sampler. Two of the four ports operate at a high sub-nanosecond speed, in "real time", and the other two ports operate at a slow millisecond-speed, in "equivalent time". A signal flowing inbound to either of the high speed ports is sampled and coupled, in equivalent time, to the adjacent equivalent time port while being isolated from the opposite equivalent time port. A primary application is for a time domain reflectometry (TDR) situation where the reflected pulse returns while the outbound pulse is still being transmitted, such as when the reflecting discontinuity is very close to the TDR apparatus.
  1. (Livermore, CA)
Issue Date:
OSTI Identifier:
Regents of University of California (Oakland, CA) LLNL
Patent Number(s):
US 5517198
Contract Number:
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
ultra-wideband; directional; sampler; uwb; device; combines; function; coupler; speed; ports; operate; sub-nanosecond; time; slow; millisecond-speed; equivalent; signal; flowing; inbound; sampled; coupled; adjacent; isolated; opposite; primary; application; domain; reflectometry; tdr; situation; reflected; pulse; returns; outbound; transmitted; reflecting; discontinuity; close; apparatus; speed sampler; directional coupler; domain reflectometry; equivalent time; time domain; reflected pulse; directional sampler; speed sample; /342/73/375/