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The propagation characteristic of highway communication is investigated by using FDTD/ray-tracing method numerically. To achieve the accurate radiation characteristics, much tinier mesh size of FDTD and ray-tracing method are employed. Take the complicated environment in the inter-city highway into consideration, tunnel with leaky coaxial cable, antenna and sensors are included to realize the propagation...
Recently, leaky coaxial cable plays a more and more important role in every kind of blind or semi-blind zone mobile communication, and along with the increase of communication business, the number of frequency band increases, lager communication capacity is needed, so it is necessary to extend the frequency band of leaky coaxial cable. The method of extending the frequency band of leaky coaxial cable...
In this paper, based on the configuration of leaky coaxial cable (LCX) with vertical slots, combined with related electromagnetic radiation theory, the radiated field of LCX in free space is analyzed by the method of Cylinder Fourier Transform. Further more, a rectangular tunnel is taken for example to calculate coupling loss of LCX in the blind zone with the use of ray-tracing method. The material...
As an instrument to realize mobile communication in the blind zone, leaky coaxial cable (LCX) is recently widely used in communication systems of tunnels, mines, subways and so on. In this paper, beginning with the radiation theory of LCX and antenna, by the use of ray-tracing method, we take a tunnel for example to analyze its radiated field produced by both LCX and spiral antenna. By comparison,...
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