Abstract:

For analysis and description of the electromagnetic field in a periodically diskloaded circular waveguide, a modematching technique is introduced and the electromagnetic field is expressed according to the waveguide modes. The particular way is that a specific diskloaded diaphragm is considered in the waveguide and the reflection problem arising from one incident is solved using the modematching technique. Thereafter, a matrix eigenvalue equation is derived for the periodically loaded waveguide. Solution of this equation yields the dispersion curve for the field structure. Experiment shows that each mode matches the boundary conditions and the matching technique used to analyze the electromagnetic field distribution in periodic linear travellingwave.

Key words: electromagnetic field, eigenvalue, eigenfunction, boundary condition, periodic linear structures