Dispersion properties of rectangularly-corrugated waveguide structures by the in-house 3D FDTD code COCHLEA in cylindrical coordinates

Authors :: George P. Latsas
Dimitrios V. Peponis
Zisis C. Ioannidis
Ioannis G. Tigelis
Source :: IET Microwaves, Antennas & Propagation, IET microwaves, antennas and propagation, 13 (1), 28-34
Publication Year :: 2018
Abstract: An in-house full-wave numerical code COCHLEA based on the Finite Difference in Time Domain (FDTD) method has been developed and used to study the dispersion properties of corrugated waveguide structures. The mathematical formulation of the corresponding electromagnetic problem is presented in detail. Numerical results are derived for axially corrugated waveguides similar to those appeared in gyrotron stacked beam tunnels and are compared with those obtained by the in-house semi-analytical numerical code FISHBONE.

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