Shcherbinin, Vitalii I.Vitalii I.ShcherbininSchünemann, KlausKlausSchünemann2020-11-172020-11-172015-11-20YSF 2015 - International Young Scientists Forum on Applied Physics: 7333190, 1-2 (2015-11-20)http://hdl.handle.net/11420/7850Circular waveguides with anisotropic impedance surfaces can be used in gyro-devices in order to improve their performance. Among them are dielectric-loaded metallic waveguides [1-5], axially [6] and azimuthally [7] corrugated waveguides. Their eigenmodes are purely (or nearly) TE and TM modes only in a number of extreme cases. Such cases were considered previously in [1-7]. However, in the general case, when the surface impedance is arbitrary, waveguide modes are hybrid HE and EH waves. Derivation of the boundary-value problem for such waves is the main aim of the study.enTechnikConference Paper10.1109/YSF.2015.7333190Other