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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. 3 figs.
Inventors:
Issue Date:
OSTI Identifier:
228055
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 426000; 440000; PA: EDB-96:080999; SN: 96001584029
Patent Number(s):
US 5,517,198/A/
Application Number:
PAN: 8-510,956
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 14 May 1996
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; PULSE CIRCUITS; DESIGN; REAL TIME SYSTEMS; MEASURING INSTRUMENTS; SAMPLING; DATA TRANSMISSION