Title :
Characteristics of leaky waveguide developed for automated highway system
Author :
Ikeda, Yasuhiro ; Xiaodong, Yang ; Watari, Toru
Author_Institution :
Hitachi Cable Ltd., Ibaraki, Japan
Abstract :
A leaky waveguide (LWG) has been developed for an automated highway system (AHS). This LWG enables continuous communication between vehicles and roadside units at the frequency of 5.8 GHz. By studying slot spacing and slot length of LWG, the developed LWG met required characteristics that were based on the 2.6 GHz leaky coaxial cable used for AHS experiments in Japan. For practical use, effects of wave reflected from road surface and of shadowing, which is caused by the shielding of other cars, were measured. The results showed that space diversity of vehicle antennas can reduce these effects. By using this LWG, continuous communication can be achieved
Keywords :
antenna radiation patterns; automated highways; electromagnetic wave reflection; leaky wave antennas; mobile communication; slot antenna arrays; 2.6 GHz; 5.8 GHz; automated highway system; continuous communication; leaky coaxial cable; leaky waveguide; shadowing; slot length; slot spacing; space diversity; vehicle antennas; Attenuation; Automated highways; Communication cables; Electromagnetic waveguides; Frequency; Intelligent transportation systems; Mobile communication; Radio spectrum management; Structural beams; Transmitters;
Conference_Titel :
Intelligent Transportation System, 1997. ITSC '97., IEEE Conference on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-4269-0
DOI :
10.1109/ITSC.1997.660451
