DIELECTRIC WAVEGUIDE FOR COMMUNICATION WITH HIGH SPEED VEHICLES

This report assesses the feasibility of a wireless, non-radiating communication system based on the use of a dielectric waveguide. The dielectric waveguide is composed of a dielectric rod attached to a metallic shield. The transfer of an electromagnetic signal to and from a vehicle moving parallel to the waveguide is accomplished by means of a coupler mounted on the vehicle itself without a physical contact with the dielectric waveguide. Both the waveguide and the moving coupler theoretically are non-radiating units. Consequently, no radiation is emitted by the system and conversely it does not couple with external electromagnetic signals which propagate in the surrounding environment. The feasibility study, conducted in the X-band or 8.8 to 9.0 GHz, has shown that the concept provides a reasonably simple and efficient communication system with a moving vehicle. In terms of radiation losses and rejection of external electromagnetic signals, the performance of the waveguide is good and consequently it can be used in regions of crowded electromagnetic environment. (Author)

• Corporate Authors:

  General Applied Science Lab, Inc

  ,    
• Authors:
  • Abele, M
• Publication Date: 1969-8-1

Media Info

• Pagination: 154 p.

Subject/Index Terms

• TRT Terms: Communications; Intelligent transportation systems; Waveguides
• Old TRIS Terms: Advanced systems
• Subject Areas: Operations and Traffic Management; Railroads;

Filing Info

• Accession Number: 00039168
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: GASL-TR-729 Final Rpt
• Contract Numbers: DOT-FR-9-0016
• Files: TRIS
• Created Date: Nov 24 1973 12:00AM