Dispersion Relations for Comb-Type Slow-Wave Structures

Asymptotically accurate dispersion relations for slow eigenwaves of a dense comb placed on the wall of a parallel-plate waveguide are given in closed form. The equations can be easily resolved numerically. An analysis of dispersion relations for combs, based on the above-mentioned equations, has advantages over commonly used methods because of the simplicity of the necessary calculations and clarity of results.