Field distribution at bends in circular H0n and cylindrical surface waveguides

A method has been developed for determining, at particular points over the cross-section, the field distribution at bends in waveguides that are designed selectively to support circular H0n and axial cylindrical surface-wave types. Experiments on the first of these waveguides confirm qualitatively the results of the analysis, indicating that, by adapting itself to the conditions of the bend, the field configuration is substantially maintained as a natural mode of the system, yielding low-loss propagation.