HIGHWAY VEHICLE IDENTIFICATION SYSTEM WITH HIGH GAIN ANTENNA
摘要
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.
申请公布号
WO9108557(A3)
申请公布日期
1992.02.06
申请号
WO1990CA00434
申请日期
1990.12.05
申请人
EID ELECTRONIC IDENTIFICATION SYSTEMS LTD.
发明人
BROCKELSBY, WILLIAM, K.;WALKER, CONRAD, M., B.;HRYCIUK, MICHAEL, L.;GILLIS, DONALD, P.