Highway vehicle identification system with high gain antenna
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United States of America Patent
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-
Nov 17, 1992
Issued Date -
N/A
app pub date -
Dec 5, 1989
filing date -
Feb 13, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An antenna system for mounting in a roadway comprised of an electrically lossy material. The antenna system has a reflector trough shield filled with a solid dielectric. An antenna, preferably comprised of coaxial cable, is positioned in the reflector trough, which prevents electromagnetic waves radiated by the antenna from being lost into the roadway.
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