THE CALCULATION OF PROPAGATION CONSTANTS OF A PERIODICALLY LOADED MULTIMODE CIRCULAR WAVEGUIDE

Operation of a circular waveguide at frequencies considerably above cutoff in order to obtain a low attenuation for the circularly symmetric transverse electric modes results in a system capable of propagating many modes. The stability of the launched TE sub 01 energy is a function of both the deviations of the guide from a true right circular cylinder and the mode structure. Guide modifications based on the natural dichotomy between the desired and spurious mode forms may be designed to increase this stability by modifying the mode structure. One way to determine the effect of any periodic modifications is to compute the scattering matrix for each junction and to apply Floquent's theorem. For a modification consisting of a narrow circumferential gap, coupled to either free space or an off resonance coaxial cavity, the scattering matrix may be found if the field in the gap is known. A field equivalence theorem is presented and used to formulate equations for the solution of the electromagnetic boundary value problem for this field. (Author)

• Supplemental Notes:
  • Report on Project Tubeflight.
• Corporate Authors:

  Rensselaer Polytechnic Institute

  Division of Systems Engineering
  Troy, NY  United States  12180
• Authors:
  • Arden, D
  • Riganati, J
• Publication Date: 1968-7

Media Info

• Pagination: 93 p.

Subject/Index Terms

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

Filing Info

• Accession Number: 00039095
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: TR-DSF-6801
• Contract Numbers: C-117-66
• Files: TRIS
• Created Date: Nov 24 1973 12:00AM