Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Suguru Asakura0
Kentaro Yoshimura0
Masaaki Ochi0
Shinichi Arie0
Katsuyasu Yamane0
Kenichi Sawada0
Date of Patent
February 20, 2007
0Patent Application Number
109312080
Date Filed
September 1, 2004
0Patent Primary Examiner
Patent abstract
LF antennas are mounted respectively on the corners of a rear bumper of a vehicle. Radio waves radiated from the LF antennas mounted respectively on the corners of the rear bumper are propagated to the both surfaces of the vehicle on the opposite sides of the corner, providing effective transmission ranges. The remaining LF antennas are mounted respectively on the side surfaces of the vehicle such that their effective transmission ranges overlap the effective transmission ranges of the LF antennas mounted respectively on the corners of the rear bumper.
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